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某校化学研究性学习小组通过实验研究高炉炼铁的化学原理，设计了如图1实验装置： （1）已知HCOOHCO↑+H2O，根据该反应制取CO，A处应选用的气体发生装置是 （如图2，填字母序号）． ...
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某校化学研究性学习小组的同学对一包敞口放置的氢氧化钠产生了兴趣想通过实验判断其中是否有碳酸钠判断氢氧
海带中含有碘元素某校研究性学习小组设计了如下实验步骤来提取碘①通足量氯气②将海带烧成灰向灰中加水搅拌
①→③→⑤→②→④
②→①→③→④→⑤
②→④→①→③→⑤
③→①→②→⑤→④
某校研究性学习小组想利用临朐桑蚕详细研究蚕的发育过程最好的研究方法是
观察法
调查法
实验法
模拟法
某校化学研究性学习小组的同学对一包敞口放置的氢氧化钠产生了兴趣想通过实验判断其中是否有碳酸钠.判断氢
某校研究性学习小组想利用桑蚕研究蚕的发育过程最好的研究方法为
观察法
调查法
实验法
模拟法
某课外学习小组共8位同学其中4个同学从来没有参加过数学研究性学习活动4个同学曾参加过数学研究性学习活
为了探究种子萌发时进行的呼吸类型某研究性学习小组设计了下列实验请根据要求填空实验原理
某校研究性学习小组想研究蚕的发育过程最好的研究方法为
观察法
调查法
实验法
模拟法
海带中含有碘元素某校研究性学习小组设计了如下实验步骤来提取纯净的碘①滤液中通足量氯气②将海带烧成灰向
①→③→⑤→②→④→⑥
②→①→③→⑥→④→⑤
②→④→①→③→⑤→⑥
③→①→②→⑤→④→⑥
为了探究种子萌发时进行的呼吸类型某研究性学习小组设计了下列实验请根据要求填空实验目的
某校化学小组的同学为了研究炼铁的原理用一氧化碳与氧化铁反应按图1进行实验图11实验开始时打开K1关闭
某校化学研究性学习小组通过实验研究高炉炼铁的化学原理设计了如图1实验装置1已知HCOOHCO↑+H2
某校化学研究性学习小组通过实验研究高炉炼铁的化学原理设计了如图1实验装置图1图21已知HCOOHCO
某校研究性学习小组设计了如下实验步骤来提取碘①加H2O2②将海带烧成灰向灰中加水搅拌③加CC14振荡
②→④→①→③→⑤
②→①→③→④→⑤
③→①→②→⑤→④
①→③→⑤→②→④
锂离子电池的广泛应用使回收利用锂资源成为重要课题某研究性学习小组对废旧锂离子电池正极材料LiM
某校地理研究性学习小组针对老城区改造过程中城市洪水发生频率增加的现象进行了调查研究该研究小组设计了一
快速将水倒在水泥地上，水四处漫流
快速将水倒在海绵垫子上，水很快被吸收
分别将水倒在草地上和水泥地上进行比较，前者水流速度慢于后者
慢慢将水倒在海绵垫子上，一段时间后水四处漫流
某校研究性学习小组想利用临朐桑蚕详细研究蚕的发育过程最好的研究方法为
观察法
调查法
实验法
模拟法
某校化学研究性学习小组通过实验研究高炉炼铁的化学原理设计了如下实验装置1已知HCOOHCO↑+H2O
某校研究性学习小组在设计验证Ni是必需矿质元素的实验时设计了下列四组实验你认为其中最恰当的是
选项A
选项B
选项C
选项D
某校化学研究性学习小组通过实验研究高炉炼铁的化学原理设计了如图1实验装置1已知HCOOHCO↑+H2
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A Whichseaanimalis1goodatescaping?Theanswermaybetheoctopus章鱼.Anoctopus'bodyisverysoft.Therearenobonesinit.Thesmallanimalhasjusttwolittlehardpartsin2itmouth.Soitcangointoverysmallspaces.Anoctopusweighingabout230gcanpass3a2.5cm﹣widehole. B IlostmywalletaftergoingshoppinglastFridayevening.ButIdidn'trealizeitwasmissinguntilfivehourslater.Icouldn'tremember4Ilostit.Istayedupallnightandworriedaboutmywallet.ThenextdayIwentbacktotheshopsthatI5visitandaskedaboutmywallet.AmanageratonestorecameoverandsaidSomeoneturnedthisinlastnight.Wethoughtyoumightcomebacktolookforit6wekeptitforyou. C WhenIwasachildIwasapickyeater.Thereweremany7foodthatIdidn'tliketoeat.ButthereisonemealIhavealwayslovedgrilled烤的cheeseandtomatosoup.It'sjusttwopiecesoftoastedbreadwithcheeseinthemiddle8servewithabowloftomatosoup.Thiskindoffood9callcomfortfood.Comfortfoodissimpleeasy﹣to﹣makeanddelicious.Italways10tastegreat.Yourparentsmightmakemealslikethisforyouwhenyouarenotfeelingwell.
A WorldEnvironmentDayisaUNEnvironment﹣ledglobalevent1takesplaceonJune5everyyearandiscelebratedbythousandsofcommunitiesworldwide.Sinceitbeganin1972ithasgrowntobecomethe2largeofallthecelebrationsofenvironmenteachyear.Chinaownshalftheworld'selectricvehiclesand99%oftheworld'selectricbuses.By3hostWorldEnvironmentDay2019theChinesegovernmentwillbeabletoshowcaseitsinnovationandprogresstowardacleanerenvironment. B Whydopeoplewanttogotouniversity?Forsomeitisthedesiretolearn.Atuniversityyou4teachbylecturersandprofessorswhomaybeleadingexperts5theirfields.Theopportunitytolearnfromthemiswhatdrivessomepeople6applytouniversity.Forothersgoingtouniversityprovidestheall﹣importantstepping﹣stonefortheircareers.Howeverforthemajorityof7westpeopleuniversitymeansfreedomfromhome. C Billionsofpoorpeoplearoundtheworld8dependontheuseofwoodforcooking.Andastheytakemoreandmorefirewoodfromwildareastheyaredestroyinghabitatsaroundtheworld.Woodcollectionisonereasonwhymanyanimalshavebecomeendangered. Thisis9Dr.MetcalfspendseachsummerinAfrica.Hewantstoteachwomenandchildreninvillageshowtocookwiththesun.HehelpedcreateSolarCookersInternational.It'sanorganizationthatintroducessolarcookerstodevelopingcountries10teachespeoplehowtousethem.
ADeedaDay Itwasabusydayasusual.Iwasmakingsandwichesandbalancingthephonebetweenmyshoulderandchin.Thewashingmachinesoundedasmyhusbandwalkedinwithourdaughters.Wehadonlyabouttwentyminutestoeat1wehadtotakethegirlstotheirnextactivity.Myhusbandseemedabit2thatdinnerwasnotonthetable. ThatnightIhadaheavy3thinkingwewerebecomingtaskmastersonanassemblyline流水线.Wehadbecometoo4inourowntasksandnotveryconsideratetowardsthosearoundus.Weneededtodosomethingtobringbacksomemeaningintoourlives.Itneededtobesomethingthatwould5ourownagendasandenergizeustowardthecommongood. IboughtanotebooknameditOurDeedDiaryandheldafamilymeeting.ItoldmyfamilyIwantedusalltothinkaboutdoinga6forotherseveryday.Itcouldbeforeachotherorforpeopleoutsideour7.Andweallneededtowriteitdowninthenotebook. Ithoughtonedeedadaywastooeasy.Howeveritwasactually8thanitseemedbecauseithadtobesomething9whatwehadalreadydone.Sendingbirthdaycardstopeoplewealreadysentcardstoeveryyearwouldnot10. Wehadarough11.Onsomedayssomeonewouldforgetto12agooddeedwhileonotherdayswewouldforgettowriteourgooddeedsinthediary.AfterafewweeksthoughIfoundmyselfwakingupinthemorningtryingto13whatgooddeedIcoulddoforsomeonethatday.Mydaughtersbegantorushtomeafterschoolto14methegooddeedtheyhaddone. NowafterayearIamhappytosaythatitismakingan15inourlives.Insteadofalways16whatthedaywillbringforuswethinkaboutwhatwecandoforsomeoneelse. Whowouldhavethoughtthattryingtodoasimplekindnessadaywouldbeso17?Ifeelmydaughtershavefeltinnerjoythatyoucanonly18bygivingtosomeoneelsefromyourheart.Thebestthingisthatyoufeelsogreataboutdoingsomethingforsomeoneelseyoudon'tevenlookfororexpectanythingin19.Sowhensomeonedoesreturnthefavoritisanenormousandpositive20. 1A.though B.unless C.before D.while 2A.annoyed B.puzzled C.embarrassed D.frightened 3A.shoulder B.stomach C.foot D.heart 4A.absorbed B.interested C.confident D.successful 5A.repeat B.relate C.refocus D.recall 6A.kindness B.task C.job D.copy 7A.room B.home C.school D.town 8A.stranger B.sweeter C.harder D.bigger 9A.beyond B.from C.about D.between 10A.matter B.count C.last D.happen 11A.time B.life C.start D.idea 12A.praise B.check C.record D.do 13A.describe B.decide C.remember D.explain 14A.bring B.teach C.offer D.tell 15A.effort B.choice C.difference D.fortune 16A.forgetting B.believing C.knowing D.wondering 17A.tiring B.moving C.surprising D.rewarding 18A.experience B.imagine C.predict D.exchange 19A.silence B.return C.time D.order 20A.negative B.positive C.slight D.threatening
假设你是红星中学高三学生李华.请根据以下四幅图的先后顺序给校刊英语园地写一篇短文介绍上周你与外国朋友Tom在颐和园的经历. 注意词数不少于120. 提示词毛笔awritingbrush
A Inormallywakeupaboutfiveminutesbeforemyalarmclock1gooff.Thenittakesmelessthanfifteenminutestowashgetchangedhavebreakfastleavehomeandgetonabus. Iamalwaysthefirstperson2gettotheoffice.Themorningsareverybusyandtheafternoonsareeven3busy.Byaroundeighto'clockIusuallyfindsometimetodomyownpaperworkandanswersomepersonale﹣mails. WhenIgethomeatabouttenIlookatsome4documentthatIbringbackfromtheoffice.Igettobedaroundmidnightwhenmywifeandchildrenarealreadyasleep. B VenusandSerenaWilliams'road5successhasbeenamazing.ThefirsttimeVenus6playinabigeventwasin1996.Sincethenshe7winWimbledonandtheUSOpentwice.Serenahascontinuedtoimproveandmakefantasticprogress.Hastennisevercausedproblemsbetweenthesisters?Fortunatelyno.Wehaveplayedeachotherbeforeandithasn'tworriedusyet! C TheDragonBoatFestivalfallsonthefifthdayofthefifthmonthofthelunaryear.Itisinearlysummer8markthebeginningofthehottestseasonoftheyear. ThetraditionoftheDragonBoatFestivalstartedmorethan2000yearsago.Intheolddaysdragonboatraces9organizeonlybyChinesepeople.Howeverinrecentyearspeoplefromothercultureshavealsotakenpartintheracesandenjoyedthefun. Thereisaspecialfoodforthefestival.Itiscalledzongzi10isstickyriceinfreshbambooleaves.
假设你是红星中学学生会__李华.下个月学校将到所在社区开展美化家园和社区讲堂两次志愿者活动.你班交换生Jim打算参加其中的一项活动发来邮件咨询.请你给Jim回复一封邮件内容包括 1.推荐一项活动 2.简述可做的事情 3.表达愿望. 注意1.词数不少于50 2.邮件的开头和结尾已给出不计入总词数. DearJim Yours LiHua
Don'tputitoffdoitnow! Whydowespendsomuchtimenotdoingtheworkweshoulddoorputtingoffsmalljobsthathavepileduptocreateabigproblem?Procrastinatingasputtingthingsofflikethisiscalledisinourcharacterwehavenaturallysincebirthweavoiddullordifficultjobsuntilit'stoolatetodoanythingelse. WeoftenputthingsoffalthoughweknowitwillmakelifemorestressfulsaysDr.Steelanauthorityonthescienceofmotivation.Ifthesetaskswerefunwe'djustdothemnow.Weputoffwhatisdifficultorunpleasantsuchasthepaperworkthatneedsdoingbeforeleavingtheofficeorcleaningthebitsofyourhomethatpeoplecan'tsee.Butthefactisthelesspeopleprocrastinatethemoremoneytheyhavethebetterrelationshipstheyhaveandthehealthiertheyare.Thisisobviouswhenyoulookatthecoupleswhodon'targueaboutwhetheranyonehascleanedthekitchenandthepeoplewhosimplygoforaruninsteadofendlesslyreschedulingitintheirheads. Ofcoursetherearetherestofuswhofeelthesmalljobspilinguparoundusdaily.We'veevolvedtorespondtothemomentandnottosetoursightstoofarinanuncertainworldDr.Steeladds.Wearenotsetuptoappreciatelong﹣termrewardswhetherit'sthebenefitofafour﹣yeardegreedoingexerciseordieting.Weusuallyfeelthecostnowandtherewardcomesmuchlater.AccordingtoDr.Steelwehavetwodecision﹣makingsystems.Theyarethelimbicwhichisresponsiblefortheshorttermandtheprefrontalcortexwhichdealswiththefuture.Webouncebetweenlong﹣termgoalsandshort﹣termtemptationssoweneedgoalsthatwilltranslateourplansforthelimbicsystem. Let'staketheexampleofstudents'writingessays.Theyshouldsetthemselvestargetsandwordcountsperday.Thesearethusturnedfromseeminglyendlesstasksintosomethingconcretewithmeasuredprogress.Dr.Steelrecommendssuchtechniquesorpre﹣commitmentsaddingthatleavingyouamonthbeforethedeadlinemakesitmorelikelyataskwillbecompleted.Thebenefitisthatyou'llavoidtheembarrassmentofnotfollowinguponsomethingpeopleareexpectingyoutodo﹣tellingeveryoneyouaregoingtotakeupjoggingmakesyoumorelikelytodoso. Overcomingprocrastinationfinallycomesdowntoplanningwhichifyou'renotcarefulbecomesprocrastinationinitself.Butitisworthmakingsureyouhaveeverythinginplace.Successfulpeopledon'tpretendtheydon'tprocrastinateDr.Steelsays.Peoplewhopretendtheyhavewillpowerarelesssuccessful.Insteadplanforprocrastinationmakeyourworkenvironmentatempleofproductivitybycuttingoutwhatstopsyoupayingyourattentionsoyoucanreallyfocusonmovingforward. 1WhatdoestheauthorsayaboutprocrastinationinParagraph1? A.Itissomethingmanypeoplecan'thelp. B.Itisanexcusepeopleoftenuseinpublic. C.Itiscausedbythetechnologyinpeople'slife. D.Itismorecommonwhenpeoplehavesmalljobstodo. 2Inparagraph3Dr.Steelbelievesthatpeoplewhoprocrastinateshould. A.attempttoovercometheirnaturaltendencies B.taketheadviceofothersinthesamesituation C.beawarethattheirproblemisrelativelysmall D.findoutmoreaboutthewaytheymakedecisions 3WhydoesDr.Steelrecommendmakingpre﹣commitmentsinParagraph4? A.Theyareanalternativetoimpossiblegoals. B.Theymakechallengesfeelmoremanageable. C.Theyareaneffectivewayofimpressingothers. D.Theyallowpeopletoachievetheiraimssooner. 4Whatdoestheauthordobysayingtheunderlinedsentence? A.Encouragethereadertodevelopplanseffectively. B.Advisethereadertodealwithcomplextasksquickly. C.Warnthereaderagainstspendingtoolonggettingorganized. D.Remindthereadertotakethetimetofocusproperlyonatask.
假设你是红星中学高三学生李华.母亲节来临之际你给英国笔友Peter发邮件介绍你打算如何给妈妈庆祝节日并询问他的母亲节计划. 注意1.词数不少于50 2.开头已给出不计入总词数. DearPeter Yours LiHua
Backin1988IwasworkingattheUniversityofBonninGermanyasaresearchfellow.ItooksometimeoffinearlyMaytovisitafriendwhowasthedirectorofamuseuminViterboincentralItaly.IsetoutbytrainwhichcrossedtheSwissbordertoreachZurichwindingthroughvalleysandalonghillsidesandenteringtunnelsandmakingitswaythroughtheSwissAlps.Thescenerywassobeautiful. ThetrainthencrossedtheItalianborderbeforepassingthroughMilanandFlorencethenfinallystoppinginRome.Iwasluckyasmyhotelwasclosetotherailwaystation.ThenextmorningIhadacoffeeatanearbycaféandeagerlysetouttovisitasmanyofthefamousRomanlandmarksaspossible. ThefollowingdayIheadedbacktothetrainstationintendingtotakeashorttrainridetoViterbotomeetupwithmyfriend.WhenIarrivedatthestationandattemptedtolocatethecorrectplatformIquicklyrealizedthatthestationwasclosedforanupgrade升级.Foramomentmymindwentblankanddidnotknowwhattodo.Mybiggestproblemwasmyluggage﹣mysuitcaseandhandluggageweresoheavythatIcouldn'tmoveabouteasily.AsIdon'tspeakItalianIcouldnotaskanyoneforinstructions.Idraggedmysuitcaseabout100meterstoanearbymotormechanics.Atallstrongmanofabout50yearsofagewasworkingthereandIexcusedmyselfandaskedwheretheneareststationwas.IamsurethathedidnotunderstandmeproperlybuthecouldeasilyguessthatIwaslookingforastation.HerepliedbutIdidnotunderstand. HesmiledwipedhishandsandsaidsomethingwhichIguessedtomeancomealong.SoIdraggedmysuitcasealongandfollowedhim.Heopenedthedoorofhiscarmotionedtometogetinandthendroveforafewminutestothenextstation.Igotoutunloadedmyluggagethenshookhishandwiththanks.Hesmiledbackanddroveaway. Therewasnotimetohugorexchangenames.Iunderstoodhewasbusyandinthemiddleofhiswork.IwasmovedsomuchbyhisgenerositythatIhaveneverforgottenhim. 1In1988theauthorwenttocentralItalyto. A.visitamuseum B.seeafriend C.dosomeresearch D.teachinauniversity 2Theauthorgotintoapanicbecause. A.thestationwasnotavailable B.hecouldn'tunderstandItalian C.hecouldn'tmanagetheluggage D.astrongmanmadehimfrightened 3Whichofthefollowingcandescribethemanworkinginthemotormechanics? A.Wealthyandresponsible. B.Generousandwarm﹣hearted. C.Courageousandcalm. D.Determinedandstrict. 4Whatdoesthestorymainlytellus? A.Goodsceneryisontheroad. B.Onegoodturndeservesanother. C.Afriendinneedisafriendindeed. D.Anactofkindnesscanbringotherswarmth.
Countingthevotestookaboutfiveminutesbutitseemedlikeanhourforme.Captainofthecheerleadersisquiteanhonor.Atleastthat'swhatIwas1. AsCoachMaguireappearedalleyeszeroedin2her. Girlsshebegan.It'smypleasuretoannouncethatTerryShawhasbeenelectedCaptainofthecheerleadingteam.Agreatcheerwasheardthroughoutthegym. How3thisbe?Ihadn't4apracticeoragameinthethreeyears.Waseveryoneblind?Didn'ttheyrealizethatIhadworkedthreeyearsto5thetitle? AllthewayhomeIsobbed.ThenextmorningIheldmyuniformclosetome.IknewIcouldn't6.AsheartbrokenasIwasmytruelovewas7withmyteammates. Howvery8itwastogotothatfirstpracticeafterTerryhadbeennamedcaptain.WhenIarrivedTerryaskedmeifIhadanyideasonhowtoimproveourroutinesandtalkedabouthowwecouldmaketheteambetter.We?Wasshekidding?Ijustwantedto9herandshekeptmakingitharderandharderformetodothat.Itwasn'tjustthatsheshowedinterestinme﹣herinterestwaswarmand10. Terryalwaysmadesureto11mewhendiscussingchangesinourroutineandeventuallyI12myselfandwegrewtobeveryclosefriends. AttheendoftheyeartheannualSportsAwardBanquetwasorganized.Wedecoratedthehalltalkingaboutallthegoodtimeswehad13duringourlastyeartogether.Ijustwantedto14thatmomentintime. Laterintheeveningwearrivedandlistenedasthevarioustrophieswereawardedtothemostvaluableplayerofeachsportsteam.Ofcoursetheteamcaptainsallreceivedtrophiestoo.Withgreat15IcheeredforTerry. JustasTerrywalkedoffthestageCoachMaguiresteppeduptothemicrophoneagainandannouncedthattherewasonefinaltrophytobeawarded.ThecheerleadingSpiritAwardwouldnowbepresentedtothegirlwhoshowedthemostdedicated16. WhenIheardmynameannouncedIimaginedIwasas17.Terrywascomingtowardme.WehuggedeachotherandTerrywhisperedNobody18thismorethanyou. TerryneverknewthatquittingwasallIhadonmymindthedayshewasnamedcaptain.Shereadthe19inmyshallowwordsofcongratulationsandembracedmeinspiteofmyselfplantingtinyseedsofkindnessandrespect.Fromhereffortgrewa20thattothisdayIholdclosetomyheart. 1A.expecting B.offering C.regretting D.designing 2A.for B.on C.with D.about 3A.dared B.would C.might D.could 4A.watched B.accepted C.missed D.followed 5A.hold B.earn C.give D.defend 6A.quit B.delay C.practise D.reply 7A.competing B.studying C.cheering D.communicating 8A.hard B.pleasant C.normal D.unforgettable 9A.persuade B.inspire C.frighten D.hate 10A.wide B.genuine C.proper D.funny 11A.teach B.praise C.control D.include 12A.punished B.hid C.overcame D.embarrassed 13A.wasted B.shared C.needed D.found 14A.freeze B.recall C.spare D.choose 15A.confidence B.politeness C.enthusiasm D.curiosity 16A.effort B.trust C.memory D.attention 17A.nervous B.shocked C.determined D.proud 18A.doubts B.completes C.deserves D.requires 19A.admiration B.sympathy C.courage D.disappointment 20A.belief B.challenge C.promise D.friendship
Openwaterswimming IhadonlyswuminopenwaterafewtimesandalwaysingentlelakessoIwasn'tpreparedforhowroughLakeWindermereappearedonacoldday.Aswimmertoldmethewaterfeltcolderthanithadbeenmeasuredandthatthewaterwasabitrough.ButIalongwith10000otherswasabouttocompletethechallenge. Mostofthepeopletakingpartweredoingaone﹣mileraceand10raceswereplannedovertheweekend.Thereseemedtobeamixofopen﹣waterenthusiastsalongsidecompletebeginners﹣whichispreciselytheaimoftheswimstogetasmanypeopleaspossiblecompletingtheirownchallenge.Theoldestwomancompetingwas77takingpartinthetwo﹣mileracealongsideamanwholastyearhadswumineveryone﹣milerace. Ihadchosenthethirdone﹣mileraceoftheday.Therewereover600peopleinmyrace.Weweretakenthroughanacclimatizationareaachildren'spaddlingpool﹣sizedpartofthelakewherewemovedintofeelhowcoldthewaterwas.Nottoobadwaseveryone'sthought!Thenweheadedouttowardsthemiddleofthelake. We'dbeenwarnedthatthefirst100metreswouldbereallyrough.Howeversomewherenearthe750mmarkIwasstillwaitingforthecalmitfeltmorelikeswimmingintheseathanalake.Itriedtofocusonmybreathingandtechniqueandjustkeepgoing.AsIapproachedthe400m﹣to﹣gomarkmylowerrightlegbecamepainful.IrecalledoverhearingpeopletalkingabouthowtheykeptswimmingthroughthepainsoItried.Butitdidn'twork.Ibegantofeeltheentirelegtightandpainful.Ididn'twanttostopsoIbentmyrightkneeandjustkickedwiththeleftleg. FinallyIsawthefinishingpostandIjustconcentratedongettingthere﹣stillone﹣legged.Myfinishingtimewas38minutes25secondsbutthatdidn'tmatter﹣theatmospherewasfantasticandeveryonefeltasenseofachievementwhatevertheirtime.I'mhookedandwanttogiveitanothergo.I'vealreadysignedupformynextopen﹣waterswim. 1Howdidtheauthorfeelbeforetherace? A.Scaredofthemostchallengingrace. B.Disappointedbythedifficultconditions. C.Concernedabouttheotherswimmersintherace. D.Determinedtobeastoughasthepeoplearoundher. 2WhydoestheauthormentionthetwopeopleinParagraph2? A.Tostresstheimportanceoftherace. B.Topraisetheexperiencedswimmers. C.Toshowthewiderangeoftheparticipants. D.Tointroducethevariouseventsoftherace. 3TheauthorsuggestsinParagraph4that. A.theracewouldcausebreathingproblems B.theracebecameharderthanshehadexpected C.itwasreallynecessarytopreparefortoughswims D.itwouldhavebeeneasierifshehadtakenothers'advice 4Whatdoestheauthortalkaboutinthelastparagraph? A.Herconfidenceinherownability. B.Herprideinhavingswumsoquickly. C.Hereagernesstorepeattheexperience. D.Hersurpriseathavingmanagedtofinish.
假设你是红星中学高三学生李华你的英国朋友Peter想了解中国近四十年发生的变化以及人们对中国未来发展的期待.请你给他回邮件内容包括四十年来人们 1.居住环境的变化 2.出行方式的变化 3.对中国未来发展的期待. 注意1.词数不少于50 2.开头和结尾已给出不计入总词数. DearPeter Yours LiHua
Lovethewayyouwalk Listencarefullytothefootstepsinthefamilyhomeandyoucanprobablyworkoutwhoiswalkingabout.Thefeaturesmostcommonlyusedtoidentifypeoplearefacesvoicesandfingerprints.Butthewaytheywalkisalsoagiveaway. Researchershaveusedvideocamerasandcomputerstoanalyzepeople'sgaitsandarenowquitegoodatit.Buttranslatingsuchknowledgeintoapracticalidentificationsystemcanbetricky.Camerasareoftenvisiblearedifficulttosetuprequiregoodlightingandmayhavetheirviewblockedbyotherpeople.AteamledbyDr.OzanyanandDr.Scullyhavebeenlookingforabetterwaytorecognizegait.Theiranswerpressure﹣sensitivemats. Suchmatsarenothingnew.Theyhavebeenpartofsecuritysystems.ButOzanyanandScullyuseacomplicatedversionthatcanrecordtheamountofpressureappliedindifferentplacesassomeonewalksacrossit.Thesemeasurementsformapatternuniquetothewalker.Theresearchersturnedtoanartificial﹣intelligencesystemtorecognizesuchpatternsanditseemedtowork.Inastudyin2018theytestedthesystemonadatabaseoffootstepsof127people.Theyfounditserrorrateinidentifyingwhowaswhowasamere0.7%.AndScullysaysevenwithoutadatabaseoffootstepstoworkwiththesystemcandeterminesomeone'ssexandwithreasonableaccuracyasubject'sage. Oneapplicationofthemat﹣basedgait﹣recognitionsystemmightbeinhealthcareparticularlyfortheelderly.Amatplacedinanursinghomeoranoldperson'sownresidencecouldmonitorchangesinanindividual'sgaitthatindicatescertainillnesses.Thatwouldprovideearlywarningofsomeonebeingatgreaterriskoffallingover. Gaitanalysismightalsobeusedasasecuritymeasureintheworkplacemonitoringaccesstorestrictedareassuchaspartsofmilitarybasesserverfarmsorlaboratoriesdealingwithdangerousmaterials. Perhapsthemostinterestinguseofthematsthoughwouldbeinpublicplacessuchasairports.Forthattoworkthefootstepsofthosetoberecognizedwouldneedtohavebeenstoredinadatabasewhichwouldbehardertoarrangethanthecollectionofphotographsandfingerprintsthatexistingairportsecuritysystemsrelyon.Manyaircreworpreregisteredfrequentflyerswouldwelcomeanythingthatspeededuponeofthemosttiresomepartsofmoderntravel. 1WhatismainlytalkedaboutinParagraph2? A.Researchequipment. B.Researchfindings. C.Researchassumption. D.Researchbackground. 2AccordingtoParagraph3thematisusedto. A.collectdata B.ensuresafety C.determineage D.analysepressure 3Thegait﹣recognitionsystemmightbeappliedto. A.monitorsecurityworkprogress B.detectpotentialhealthproblems C.keeptrackoftravellingfrequency D.warnpassengersofpossibledangers 4Themainpurposeofthepassageisto. A.compareandeducate B.examineandassess C.discussandpersuade D.explainandinform
Preschoolgirlliftsoldman'sspirits WhenTaraWoodbroughtherdaughtertoagrocerystoretobuythefour﹣year﹣oldsomecupcakesshehadnoideathatwouldbealife﹣changingexperience. AsTarapushedherdaughterNoraharoundthestorelastmonthshepassedanoldmanwhowasbyhimself.TheoldmanlookedcolduntilNorahshoutedtohimHi!It'smybirthdaytoday!Themanstoppedandhisdemeanorchangedfromdistantandserioustowarmandfriendly.Howoldareyoutoday?themanasked.AftersometimetalkingtogetherNorahaskedhermomtotakeapictureofherwithhernewfriendMrDanDanPeterson82.Theyhuggedandaftertenminuteswenttheirseparateways.Thatcouldhavebeentheendofthestory.Butitisactuallythebeginningofaspecialrelationship. TarapostedthepictureofherdaughterandMr.DanonFacebookandsomeonewhorecognizedhimreachedouttoherwithhiscontactinformation.ItturnedoutthatMr.Dan'swifediedinMarchandhehadbeensufferingfromdepressionandanxietyeversince.ThepersononFacebooktoldTarathatitwasthefirsttimetheyhadseenMr.Dansmilesincethedeathofhiswife.KnowingthatTaracontactedMr.DanandeversinceNorahandthe82﹣year﹣oldhavedevelopedafriendshipunlikeanyother.ShehasshownmeadepthofloveadepththatIdidn'tknowexistedMr.Dantoldthereporter. Mr.DantoldTarathatbeforemeetingNorahhehadn'thadonenightofuninterruptedsleep.Anxietykepthimupatallhoursandmadehimrestless.AftermeetingNorahhesaidhenowsleepssoundly.ForMr.Dan's82ndbirthdayonOctober20themotherandthedaughterbroughtballoonsandpresents﹣andofcoursecupcakes.Mr.DanwillalsospendadayaroundThanksgivingwithNorahandherfamily.Ifyoudon'ttakethetimetonoticepeopleyouwillneverknowhowyoucanpositivelyimpactalifeTaraWoodsaid. 1Mr.Danlookedcoldbecause. A.hefeltlonely B.hedislikedlittlekids C.nobodyhadhuggedhim D.heknewlittleaboutNorah 2TheunderlinedworddemeanorinParagraph2probablymeans. A.words B.body C.thoughts D.attitude 3HowdidTaraknowmoreaboutMr.Dan? A.Fromanewsreporter. B.Fromastranger. C.Fromashopassistant. D.Fromhisneighbor. 4Whatcanwelearnfromthestory? A.Givingmakesarealdifference. B.Itisimportanttorespecteachother. C.Weshouldnotjudgeapersonatfirstsight. D.Goodthingswillhappenifonekeepstrying.
Aculturalviewonpersonalspace It'sawell﹣knownfactthattheBritishpreferalargebubbleofpersonalspacearoundthem.1AndinSouthAmericaafriendmaygrabyoubythearmduringconversationtomaketheirpoint. NowastudypublishedintheJournalofCross﹣CulturalPsychologyhaslookedintowhydifferentcultureshavesuchdifferentapproachestopersonalspace. 2Theydevelopedanearlierstudythatdividedindividualsintocontactandnon﹣contactcultures.Contactcultures﹣southernEuropeanLatinAmericanandArabian﹣engagedinmoretouchingandstoodcloserduringconversationthannon﹣contactculturesinnorthernEuropeNorthAmericaandpartsofAsia. Toadegreethisprovedcorrect.Argentinabecomesknownasthemosttouchy﹣feelynationpeopleherekeepthesamedistancefromastrangerasaBritishpersonwouldanacquaintanceandaCanadianindividualaclosefriendorpartner.3Theycomeoutwiththewidestdistanceyoushouldstandfromastranger﹣morethan1.3m﹣butoneofthenarrowestgapsforclosefriendsjust40cmcomparedtonearly60cmforaBritishperson.Sothetheoryofwarmversuscoldisnotasstraightforwardasitsounds. 4Thehigheracountry'saveragetemperaturethecloserpeoplewillstandtoastranger.Butolderpeopleinwarmclimateskeepabiggerdistancefromclosefriendsandstandclosertostrangerswomengenerallykeepagreaterdistancefromsomeonetheydon'tknow. Theacademicsleadingthisstudyadmitthatthereisalotmoretodo.ButwhatwedoknowistokeepyourdistanceinCanadaprepareforahuginArgentina.5Theyliketostandcloserthananybody.Tokeepwarmperhaps. A.It'simportanttogetthedistancerightthough. B.Romaniansclearlytakelongertoestablishtrust. C.Howclosewestandtootherpeoplevarieswidelybetweencountries. D.AndifyouendupongoodtermswithaNorwegiandon'tdrawback. E.HoweverinIndiapeoplewillpackintotrainsandbuseswithoutasecondthought. F.Onetheorytheresearcherswantedtotestwaswhetherclimateaffectspersonalspace. G.Thestudycertainlyfoundthatclimateageandgenderhaveaneffectonpersonaldistanceacrosscultures.
A ZhengHe1371﹣14351completesevenfamousvoyagesbetween1405and1433.In28yearsoftravellinghehadmanagedtosharethegloryofChina2manydifferentcountries.Healsobroughtbackmanygiftssuchasmedicinespearlsandstrangeanimals.Whenhediedin1435thestoriesofhistravelsmadehimoneofChina'smostfamous3explorer. B WhenMarcoPolowas17yearsoldhearrivedinBeijingwithhisfather4wantedtodotradewiththeChinese.AtthattimeChina5rulebytheYuanDynastyEmperorKublaiKhan.TheEmperorwasimpressedbyMarcoandtheybecamefriends.HeaskedMarcotoserveinhiscourtandsenthimtodomanyimportanttasks.Marcointurnwasamazedby6beautifulandpowerfulChinawas.After17yearsofservicetotheEmperorMarcoreturnedtoItaly.HetoldallhisstoriesinChinainabook7callTheDescriptionoftheWorldwhichbecameoneofthebest﹣sellingbooksinEurope. C Inthe1960sagroupofcyclingfanspaintedhundredsofbicycleswhiteandplacedtheminlotsofneighborhoodsaroundAmsterdamforpeopletouse.Theproblemwas8itdidn'twork﹣thievestookallthebicycleswithinweeks!Howevermorethanthirtyyearslaterthewhitebikewasbackintownthistimewithacomputerchip9recorditseverymove!Todaythereisalreadylesstrafficin10centreAmsterdambecausebothlocalsandtouristshavebeenusingthewhitebikes.ThereforeAmsterdamiscalledtheCityofBicycles.
Nooneknowswhatthefuturewilllooklike.Newtechnologyandclimatechangemightmaketheworldmoredifferentthanwecanpossiblyimagine.Sowehadbetterkeepanopenmindandhopeforthebest. Wehavenoideawhatthejobmarketwilllooklikein2050.Itisgenerallyagreedthatmachinelearningandroboticswillchangealmosteverylineofwork﹣fromproducingyoghurttoteachingyoga.Howeverthereareconflictingviewsaboutthenatureofthechangeanditsurgency.Somebelievethatwithinameredecadeortwobillionsofpeoplewillbecomeeconomicallyredundant多余的.Othersmaintainthateveninthelongrunautomationwillkeepcreatingnewjobsandgreaterprosperityforall. Soareweonanedgeofaterrifyingsuddenchangeoraresuchforecastsyetanotherexampleofill﹣foundedLudditehysteria勒德分子的歇斯底里?Itishardtosay.Fearsthatautomationwillcreatemassiveunemploymentgobacktothenineteenthcenturyandsofartheyhavenevermaterialized.SincethebeginningoftheIndustrialRevolutionforeveryjoblosttoamachineatleastonenewjobwascreatedandtheaveragestandardoflivinghasincreaseddramatically. Yettherearegoodreasonstothinkthatthistimeitisdifferentandthatmachinelearningwillbearealgamechanger.Humanshavetwotypesofabilities﹣physicalandcognitive认知的.Inthepastmachinescompetedwithhumansmainlyinrawphysicalabilitieswhilehumansstillhadagreatadvantageovermachinesincognition. Henceasmanualjobsinagricultureandindustrywereautomatednewservicejobsemergedthatrequiredthekindofcognitiveskillsonlyhumanspossessedlearninganalysingcommunicatingandaboveallunderstandinghumanemotions.HoweverAIisnowbeginningtooutperformhumansinmoreandmoreoftheseskillsincludingintheunderstandingofhumanemotions. Wedon'tknowofanythirdfieldofactivity﹣beyondthephysicalandthecognitive﹣wherehumanswillalwaysmaintainasecureadvantage.ItiscrucialtorealizethattheAIrevolutionisnotjustaboutcomputersgettingfasterandsmarter.Itisfueledbybreakthroughsinthelifesciencesandthesocialsciencesaswell.Thebetterweunderstandthebiochemicalmechanismsthatsupporthumanemotionsdesiresandchoicesthebettercomputerscanbecomeinanalyzinghumanbehaviorpredictinghumandecisionsandreplacinghumandriversbankersandlawyers. Inthelastfewdecadesresearchinneuroscienceandbehaviouraleconomicsallowedscientiststogainamuchbetterunderstandingofhowhumansmakedecisions.Itturnedoutthatourchoicesofeverythingfromfoodtomatesresultnotfromsomemysteriousfreewillbutratherfrombillionsofneuronscalculatingprobabilitieswithinasplitsecond.Boasting‘humanintuition'直觉isactuallypatternrecognition. 1Thesecondparagraphtellsusabout. A.predictionsabouttheroleofmachinelearninginfuturejobmarket B.thespeedatwhichroboticswilltaketheplaceofhumanbeings C.theurgencyofcreatingnewjobswiththehelpofautomation D.thenatureofapplyingnewtechnologytoeverylineofwork 2Theunderlinedexpressionill﹣foundedinParagraph3isclosestinmeaningto. A.unidentified B.badly﹣managed C.unproven D.ill﹣intended 3WhichofthefollowingisTRUEaccordingtothepassage? A.Lackofjobsecuritymightforcepeopletopickupmachinelearning. B.ThereispossibilitythatAIcanperformaconsultingroleasapsychologist. C.Theuseofautomationwillmakehumansmoreneededthaneverbefore. D.Arealgamechangerlikesinmakingcomputersbecomefasterandsmarter. 4Whatcanbeconcludedfromthepassage? A.AIrevolutionissimilartotheindustrialrevolutionincausingunemployment. B.It'scrucialthathumansmaintainanadvantageinthethirdfieldofactivity. C.Theprocessofhumandecisioniscontrolledbyfreewillratherthanneurons. D.Thenatureofpreferenceatfirstsightistheresultofrecognizingpatterns.
假设你是红星中学高三学生李华.请根据以下四幅图的先后顺序给校刊英语角写一篇英文稿件介绍你们班上个月参加学校汉语成语大赛的全过程. 注意词数不少于60. 提示词汉语成语大赛ChineseIdiomsCompetition
IsaidPapiletmefinishschool.Noneofhisotherdaughterscompletedmorethanthreegrades.Istillcandomychores家务Itoldhim.Payformetofinishschool. HedughisbootintothedryearthofQuanajuatothestateheneverleftinhisentirelife.Buthestillwasthesmartestmaninourvillage.HereadbooksaboutEgyptandknewhowtohandwriteunlikemymotherwhoneverhadaneducation. Whydoyouwanttoreturntoschool?hesaidloweringhiseyestome.Soyoucanmeetamanmarryandquit?Youwantmetopayforthat? NoPapiIsaid.Iwon'tmarryinschoolandIpromiseI'llgraduate. Thewindwhistledthroughthetrees.Myfathersawafishermanwithapolebentovertheriverbank.IsaidurgentlyPapiandIalmostgrabbedhisthickbrownwrist.Inthecountrymyfatherwouldstopandtalkwithanystrangernomatterwhathewasdoing.Hewouldtalkabouttheharvesttheweatherthefamilybutmostlyhewouldlisten. Heturnedmakinghiswaytothefisherman.Ifollowedbehindhiminmyopen﹣toedshoescarefullypickingmysteps.IknewIhadlosthisattentionandIsearchedaroundmeforsomethingtofillthetimeIwouldspendwaiting.Buttherewasnothingandnobody. Buenosdiasmyfathersaidtothefisherman. Itookmyseattenfeetfromthem.Thetwomenstaredacrossthelakeandtalked.Theirvoicesdronedonandwereblendedwiththewind.Idaydreamed. Martacomeheremyfathercalledtome. Iliftedmyselfupandwalkedveryslowlytowardthemwithoutliftingmyfeetofftheground. MartamyfathersaidIhaveaskedDonTomswhathethinksaboutyourpromise. Istaredatthisfishermanthisstrangerandthenbackatmyfatherwithwideeyes. Itoldhimaboutyourpromisetostaysingleandhetoldme﹣lethergo. Thefishermanlookeddownathiswornshoes.Ifyouwantithesaidtotheearthbeneathhisfeet. LaterIbecameFather'sonlydaughtertocompletehighschooleducationandtheonlyonetoleavehishouseunmarried. 1Theauthorspoketoherfatherto. A.shareherschoollife B.begforherschoolfee C.learnabouthersisters'study D.complainaboutthehousework 2Theauthorfeltwhenherfatherwentovertothefisherman. A.ashamed B.tired C.angry D.helpless 3Whydidtheauthor'sfathertalkwiththefisherman? A.Toofferhelp. B.Totalkaboutharvest. C.Toaskforadvice. D.Togetawayfromtheauthor. 4Thelastparagraphsuggeststhattheauthor. A.keptherwords B.missedherfather C.regrettedthedecision D.livedacomfortablelife
Two﹣year﹣oldSamanthaSavitzhasahearingproblem.Livingwithinacommunitywheretherearenoother1peoplearoundherneighborsfoundawaytomakeherfeel2andincluded. SamanthalivesinIslingtonRoadinNewtonMassachusetts.Shelovestotalktoanyonewhoknows3languagebutnoteveryoneintheneighborhoodknowshowtocommunicatewithher. She'seasy﹣going.Shewantstotalkwithanybody.saidherfatherRaphael. Herwholepersonalitychangeswhenpeoplecan4withhersaidhermotherGlenda.ItmakesSamanthaalittle5whenpeoplecan'tinteractwithher. 6Samanthawantedtoplaywithherneighborsbadly.Whenevertheyseeheronawalkorinheryardthelittlegirltriestobe7.Buttheyarefrustratedbecausetheydon'tknowhowtotalktoher. Allofuswould8totalktoherbutwedon'tknowwhattosay.saidoneneighbor.Basicconversationthatonewouldhavewitha9saidanother. Askingheraboutherdaysaidathird. Andmakeherfeelthatsheispartoftheneighborhoodsaidanotherneighbor. Justbeherfriendanotherneighboradded. Itisclearthattheneighborsall10tobethereforSamanthaasherfriend.Buttheywouldneedto11AmericanSignLanguage.Itmightbehardtobelieveforsome﹣thatawholeneighborhoodwouldlearnASLjust12alittle2﹣year﹣oldgirl﹣butthisparticularcommunitydidjustthat. OntheirownSamantha'sneighborsgatheredand13aninstructor.NowtheyallparticipateinanAmericanSignLanguageclass. The14saysthatthisisaremarkablethingbecausesomeparentsofdeafchildrendon'tevenbothertolearnsignlanguage.ButhereSamanthahasafull15thataresigninginmyclassandcommunicatingwithheranditisabeautifulstoryhesaid. Herparentshavenowordstoexpresstheir16forwhatthecommunitydidforSamantha.Glendafindstheactshockingandbeautiful17Raphaelfeelssofortunatethattheirdaughterisreceivingsomuchlove. Infactthecoupleisalreadyseeingsome18intheirdaughter.DuringASLclassesthefirstthingthatSamanthasaystoherneighborsisfriend.Wearesurethatthisenergeticgirlis19nowthatshehasfriendsaroundwho20thesamelanguageasher.ThankthisneighborhoodinIslingtonRoadforshowingusthemostimportantpartofbeingacommunity.Theinstructorsaid. 1A.blind B.gifted C.educated D.deaf 2A.modest B.welcome C.different D.strange 3A.sign B.machine C.signal D.expression 4A.argue B.agree C.discuss D.communicate 5A.independent B.relaxed C.angry D.sad 6A.Nervously B.Calmly C.Obviously D.Fortunately 7A.lonely B.friendly C.satisfied D.excited 8A.wait B.hesitate C.like D.decide 9A.child B.student C.neighbor D.mother 10A.began B.pretended C.wanted D.gathered 11A.know B.find C.teach D.draw 12A.for B.as C.from D.with 13A.consulted B.visited C.phoned D.hired 14A.father B.mother C.instructor D.doctor 15A.school B.community C.hospital D.family 16A.concern B.wish C.anxiety D.gratitude 17A.while B.but C.so D.for 18A.courage B.change C.sympathy D.patience 19A.taller B.stronger C.happier D.smarter 20A.show B.speak C.whisper D.choose
A NewresearchintoEQandIQsuggeststhatsuccessisnotsimplytheresultofahighIQ.WhileyourIQtellsyou1intelligentyouareyourEQtellsyouhowwellyouuseyourintelligence.AccordingtoProfessorSaloveyatworkitisIQthatgetsyouhiredbutitisEQthatgetsyoupromoted.Itisgenerally2believethatpeoplewithhighEQsareopentonewideasandhavepositiveattitudestowardslife.Theyarealsolesslikelytobetroubledbyproblems.AlsomostsocialscientistsagreethatEQhasalot3dowitheducation﹣﹣improvingaperson'sEQespeciallyintermsofpeopleskills. B AsachildWangJunyannever4dreamofbecomingafamouspersononTV.NowsheisthepresenterforUniverseTV'snewsprogramsandshecontributedhersuccesstobeingcuriousworkinghardandbelievingin5wastrue.Inherpointofviewitwashermotherwhotaughthertoshowcuriosityinmankindandnature.WangJunyanchosetobeajournalistaftergraduating6universitybecauseitisimportantthatpeoplegraspwhatisgoingonaroundthem.Laterherreporthelpedherrealizetheimportanceofcommitmentandperseveranceinbeingajournalist. C BeforeMr.Jenkinssciencehadsimplybeenasubjectfullofstrangewordstome.Ifounditallboringanddifficult.ButMr.Jenkinsmadeeverythinginterestingexplainingthingswithlotsofpractical7exampleandsimplifiedthings.IknowthatIwasn'tawillingstudentandlackedconfidencein8me.IwishIshouldn'thavebeensodifficultatschool.AgainMrJenkinsmademefeelthatIcoulddothingsandonceI9encouragetogiveapresentationaboutastronomytotheclass.Nowitismyjobtoexplainsciencetoaudiencesandfeel10thanktoMr.Jenkinsforturningachildlikemeintosuchasuccessfuladult.
下列各图是教案备课库常见的几个实验操作其中错误的是
BenefitsandProblemsofGeneticEngineering Plantbreedingisthescienceofchangingthecharacteristicsofplantsinordertoproducedesiredones.Genesinaplantarewhatdeterminewhattypeofcharacteristicsitwillhave.Plantbreederstrytocreateaspecificoutcomeofplantsandpotentiallynewplantvarietiesbychangingthegenesoftheplantsthroughbreedingwhichismakingnewplantsfromparentsofdifferentvarietiesorspecies. Actuallyplantbreedinghasbeenpracticedforthousandsofyearssincenearthebeginningofhumancivilization.Itispracticedworldwidebyindividualssuchasgardenersandfarmersandbyprofessionalplantbreedersemployedbyorganizationssuchasgovernmentinstitutionsuniversitiescrop﹣specificindustryassociationsorresearchcenters.Theyhavecrossbredplantstocreatethenewtypesofplantsthatareforexamplebiggerstrongerormoreattractive. Crossbreedingcantakesuchalongtimehoweveranditisinaccurate.NowwecanchangeexactsectionsofDeoxyribonucleicacidDNAsotheprocessismoreaccurateandfaster.Butpeopleallovertheworldarearguingaboutitsbenefitsanddisadvantages.Somepeopleusethetechnologytoproducedesiredcharacteristicsofplantsandanimals.Otherpeopleareconcernedthatthegeneticallyengineeredplantsmayharmtheenvironmentandworriedthattheymaybedangerousforpeopletoeat. Therearemanyreasonsforchangingplantsinthisway.Internationaldevelopmentagenciesbelievethatbreedingnewcropsisimportantforensuringfoodsecuritybydevelopingnewvarietiesthatarehigheryielding高产的diseaseresistantdroughttolerantorregionallyadaptedtodifferentenvironmentsandgrowingconditions.Forexamplesomegeneticallyengineeredplantscanlivethroughfrostordraught.Asaresultfamerscanmakemoreprofitbecausefewerplantswilldie. Somegeneticallyengineeredplantsaremorenutritious.Theyhavelessfattastebetterorstayfresherthannon﹣geneticallyengineeredplants.Thiswillallowpeopletobuybetter﹣qualityfruitandvegetables. Somegeneticallyengineeredplantscanresistnaturalpestssuchasvirusesorinsects.Thisreducestheamountofchemicalneededtokillpestswhichishelpfultotheenvironment. Howevergeneticallyengineeredplantscancauseunexpectedproblems.Geneticallyengineeredplantsthatresistpestsmaypassonthatcharacteristictoawildrelative.Thismaycausethewildplanttospreadfastbecausepestsarenotnaturallykillingit. Geneticallyengineeredplantscanalsoharmanimals.Atypeofcornhasbeendevelopedwhichkillsaspeciesofinsectthatdestroysit.Thepollen花粉fromthiscornhowevercanalsokillmonarchbutterflies﹣themostbeautifulofallbutterflieswhichdonotharmthecorn. Toensurethemostadaptedvarietiesareidentifiedadvocatesoforganicbreedingnowpromotetheuseofdirectselectionformanydesiredcharacteristics. Geneticengineeringisaverynewscienceandwehavealottolearnaboutthegooditcandoandthedamageitcancause.Themainconcernisthatnotenoughtestsarebeingdonetoensureitissafe. 1Accordingtothepassagethepurposeofplantbreedingisto. A.beautifytheenvironment B.changethegenesofplants C.producenewplantvarieties D.assessthevalueofthepractice 2Theauthorthinkscrossbreedinginaccuratebecause. A.thesectionsofDNAarechanged B.problemsaresometimescaused C.manpowerandresourcesarewasted D.animalsareproducedusingthetechnology 3Theauthor'sattitudetowardcrossbreedingis. A.doubtful B.disapproving C.objective D.supportive 4Whichofthefollowingbestshowsthestructureofthepassage? A. B. C. D. IIntroductionCpCentralPointPPoint SpSub﹣point次要点CConclusion
Wearingheadphonesisverycommonamongyoungpeople.Theiraffectionforheadphonesreflectsadesiretoavoidboredominconveniencesandundesirablesocialinteractions互动.Thesayingheadphonesinworldouthasgainedpopularityamongyoungpeoplerecently.Unfortunatelyfortheheadphoneloversworldoutisnotagreatpolicyforathoughtfulsociety.Thewidespreaduseofheadphonesinpublicisharmfultousersbecauseitlimitsintellectualgrowthandmakespotentiallymeaningfulinteractionswithstrangersimpossible. Frequentheadphoneusersaremissingoutonvaluableexperiencesthuslimitingintellectualgrowth.Youngpeoplewearheadphonesthinkingtheywillfacefewersocialchallengesargumentsorevencasualrudeness.Thoughthatsoundslikeagoodideawedonotgrowbyavoidingdiscomfort.Infacttodevelophealthilyateenagerhastobefacedwithchallengesorevenembarrassments.JustasasayinggoesStormsmaketreestakedeeperroots.Wearingheadphoneswhenfacedwithsocialawkwardnessteachesustobepassiveandpreventsusfrombecomingmatureintellectually. Headphonescanalsocauseustomissoutonpositiveinteractionswithstrangers.WriterJacobBernsteindescribesasweetinteractionbetweenayoungwomanandanolderwomanonatrainthatwouldnothaveoccurrediftheyoungwomanhadrememberedherheadphonesasusualthatday.AsimilarcaseisdiscussedinThrowAwayYourHeadphonesBoredomIsGoodbyRosecransBaldwin.Aftergivingupheadphonesheadaptstothesocialenvironmentduringhisdailyroutine.Helaughsatridiculousoverhearddiscussionsandevenenjoyshismorningjogwithoutasoundtrack.Becomingfamiliarwithpeopleoutsideyourchosengroupcanopenyoureyestootherwalksoflifeandtheiruniqueexperiences. Youngpeoplethinktheyaregoodcommunicators.HowevercommunicationisnotmeasuredinFacebookfriends.Realcommunicationisthebasisofhumanity.Weneedrealinteractionsinourdailylife. Thissummerdon'tforgettotakeoffyourheadphonesandplugyourselfintolife. 1WhatdoestheauthorthinkofdiscomforttoyoungpeopleinParagraph2? A.Beneficial. B.Normal. C.Annoying. D.Unnecessary. 2Thesweetinteractionbetweenayoungwomanandanolderwomanonatrainoccurred. A.byaccident B.onpurpose C.intime D.insecret 3TheauthormentionedthestoriesofJacobBernsteinandRosecransBaldwinto. A.analyzetheirbehaviors B.learnfromthetwostories C.giveevidenceforhisargument D.makethearticlemoreattractive 4Whatdoestheauthorimplyaboutyoungpeople? A.Theybecomemoreandmoreindependent. B.Theylacktheabilityofrealcommunication. C.Headphonescontributealottotheirsocialinteractions. D.Facebookprovidesthemwithmorechancestomakefriends.
Maninventedanumberofmeanstocoverdistance﹣carsplanesradioTVcomputersspaceshipsetc.1Readingisrealfunisn'tit?Itisafantasticjourneyintothepastorthefutureatruelovestoryoraseriousnoveltochallengeyourthoughtsadetectiveorsomethingfunnyifyoulikehumour. Youcouldseealotofpeopleoldandyoungreadinginmanydifferentplaces﹣inaparkoronabusinaplaneoronabeach.Itmightbeamagazineoranewspaperavolumeofpoemsoralengthynovel.2Theytellyoualotaboutlifepeopleandthefastchangingworld.Theydevelopimaginationloveforwordandexpressionandawakenawishinyoutocreatesomething.Itishardtoimaginelifewithoutbooks. 3Wesometimeslookthroughthebooktoseewhatitisabout.Wemayjustwanttogetthegeneralideafromanewspaperarticleareportorabookinabookshop.Thistypeofreadingiscalledskimmingreading. Quickreadingisalsopracticedwhenwewanttogetaparticularpieceofinformationsuchasadateoratelephonenumber.Thisiscalledscanning.Wescantimetablestelephonedirectoriesdictionariesandwebpages. Butifwewanttogetthedetailedinformationwereadslowlyandcarefully.Thisiscalledintensivereadingorstudyreading.4Weconsultdictionariesifnecessary.Wetakenotestoremembersomethingimportantsuchasamathematicalquotation引证. Readingfictionanovelorafavouritepoemisalsointensivereading.Itneedstrainingandspecialskillstounderstandtheentirecontentthebeautyoftheexpression.5Itmakesyoulaughyourheadofforcryyourheartout. A.Yougetinvolvedinthestory. B.Readingcanbeasocialactivity. C.Wereadinmanydifferentwaysandatdifferentspeeds. D.Bookshelpyouunderstandtheworldandyourselfbetter. E.Scanningisusedwhenweneedtolocatespecialinformation. F.Butuptillnowtherehasbeenonlyonewaytocovertime﹣books. G.Inthelattercasewecheckthemeaningnottomisunderstandsomething.
OnMarch182018ElaineHerzbergwascrossingaroadinTempeArizonawhenaVolvoSUVhitandkilledher.AlthoughshewasoneofthousandsofU.S.pedestrianskilledbyvehicleseveryyearonedistinctiveaspectsetherdeathapartNobodywasdrivingthatVolvo.Acomputerwas. JustacoupleofmonthslaterasurveybyAAAAmericanAutomobileAssociationrevealedthat73percentofAmericansweretooscaredtoziparoundinatotallyautonomousride﹣a10percentincreasefromasimilarpolltakenbeforeHerzberg'sdeath.Actuallyself﹣drivingcarsarealreadycruisingourstreetstheirspinninglasersandothersensorsscanningtheworldaroundthem.Butwhatmakessomeofusstillsowaryoftheseroboticchauffeursandhowcantheyearnourtrust? Tounderstandthesequestionsitfirsthelpstoconsiderwhatpsychologistscallthetheoryofmind.Putsimplyit'stherecognitionthatotherpeoplehavebrainsintheirheadsthatarebusythinkingjustlikeoursusuallyare.Thetheorycomesinhandyontheroad.BeforeweventureintoacrosswalkwemightfirstmakeeyecontactwithadriverandthenthinkHeseesmesoI'msafeorHedoesn'tsoI'mnot.It'satechniquewelikelyusemorethanwerealizebothbehindthewheelandonourfeet.Butyoucan'tmakeeyecontactwithanalgorithm计算程序.Whenacarisinself﹣drivingmodethecomputer'sincharge.We'regoingtohavetolearnatheoryofthemachinemindsaysAzimShariffaprofessorofpsychologyattheUniversityofBritishColumbia.Whatthatmeansinpracticeisthatself﹣drivingcarswillneedtoprovideclearsignals﹣andnotjustturnsignals﹣toletthepublicknowwhatthatmachinemindisplanning. Howeverthatdoesn'tmeanwewantittomimicexactlyhowhumansthinkandactwhiledriving.Infactthepromiseoftravelingbyautonomouscaristhatsiliconbrainswon'tdodumbthingssuchastextanddriveordrinkanddriveorrocketdownthehighwaywhileupsetafterabreakup.Carsdon'tdate.IbelievethattheyhavethepotentialtobesaferthanregularcarssaysMarjoryS.BlumenthalaseniorpolicyanalystattheRANDCorporation.Butshesaysthere'snotenoughgooddatayettoknowforsure. Onepracticalwaytocreateareputationforsafetyistostartslow.TheUniversityofMichigan'spairofself﹣drivingshuttlesgojust12milesperhour.HueiPengaprofessorofmechanicalengineeringsaystheresearchteambehindtheprojectisbuildingtrustbynotaskingtoomuchThepredeterminedrouteisjustaboutamilelongsothey'renotexactlyspeedingdownahighwayinthesnow.We'retryingtopushtheenvelopebutinaverycarefulwayPengsays. Indeedthepublicisn'thomogeneoussaysRajRajkumarwhodirectstheMetro21.Henoticesthreecategoriesofpotentialuserstechskepticsearlyadoptersandpeoplewhoarestressedbydriving.Theearlyadopterswillbuyinfirstfollowedbythefolkswhojustdislikedrivingandthenfinallytheskepticsheargues.Soit'salongprocess.Trustgrowslikeaself﹣drivingshuttledrivesslowly. 1WhatdidthesurveybyAAAshow? A.Thewideuseofself﹣drivingcars. B.Thegrowingdoubtsonself﹣drivingcars. C.Theurgentneedforlawsonself﹣drivingcars. D.Therapidriseofdeathscausedbyself﹣drivingcars. 2Thetheoryofmindismentionedtoshow. A.humanmindmakesdrivingeasier B.communicationtakesawaydrivers'attention C.communicativeskillscanbeimprovedbypractice D.self﹣drivingcarsarenotassafefortheirmachinemind 3Paragraph4wantstotellusthatself﹣drivingcars. A.willreplaceregularcars B.couldn'tactlikehumans C.couldbesaferthanregularcars D.shouldlearntothinklikehumans 4Whatistheauthor'sattitudetowardsthefuturedevelopmentofself﹣drivingcars? A.Cautiousbutoptimistic. B.Puzzledbuthopeful. C.Concernedbutpessimistic. D.Skepticalbutinterested.
假设你是红星中学学生李华.请根据以下四幅图的先后顺序给某英文报刊投稿记录你参加的绿化社区活动. 注意词数不少于60. 提示词花苗flowerseedling
TwoyearsagowhenIlostmyjobwhichIhaddonefor10yearsIdecidedtorealizethedreaminmyheart.Iwantedtogobacktocollegetofinishmydegree.IwasinterestedinteachinganditwasnotuntilIhadvolunteeredasateacherinaspecial﹣educationschoolthatIknewIwantedtoworkwiththedisabledchildren. Tofinishmydegreemeansthatmyfamilywouldneedtomovetoanothercityandmyhusbandwouldhavetochangehisjob.WhentheletterarrivedthatIwasacceptedintotheUniversityofNorthCarolinaIwasveryhappy.Buteverythingwasnotpreparedwellyet.ThedaybeforeclassesbeganIarrivedinthetownofBoonewheretheschoolislocatedwithonesuitcaseandonebackpack.Myhusbandandchildrendroppedmeoffatthedormitorywishedmegoodluckanddroveawaybackhome.ThatwasprobablyoneofthehardestthingsIhadeverexperiencedinmylifeandIfeltguiltybecauseIfeltIwasn'tagoodwifeoragoodmother.ThatnightIgotacallfrommyparentswhosewordsinspiredmetocontinuetopursue追求mydream.FromthemIgotthecouragetofightformydreamthoughitwasveryhard. NowingraduateschoolIfeelmorethaneverthatIamdoingwhatisright.Iknowthathavingamaster'sdegreewillhelpmerealizemygreatestdreamofhelpingothersachievetheirdreams. 1Theauthordecidedtopursueherdream. A.aftershelostherjob B.aftershegotmarried C.whenshebecameateacher D.whenshegraduatedfromcollege 2Whentheauthorwenttotheuniversity. A.herfamilymovedtoBoone B.herhusbandfoundanewjob C.shedidn'thaveeverythingready D.sheleftherchildrenwithherparents 3Theauthor'sbiggestdreamisto. A.findabetterjob B.getaMasterdegree C.beagoodwifeandgoodmother D.helpothersachievetheirdreams
Doyouknowelectricitycanchangethewaywetastefood?ProvingthisfactisarevolutionaryelectricforkdesignedbyJapaneseresearchersthatcanmakeanydishtastesalty. AccordingtoHiromiNakamuraaPostDocResearchFellowatTokyo'sMeijiUniversitythetechnologycanbeveryusefulforpeopleonspecialdiets.Patientswithhighbloodpressureforinstancecaneasilygoonalow﹣saltdietandstillenjoydeliciousfood.Andwiththeforkthere'sabsolutelynoriskofover﹣saltingtheirfood.Luckilythevoltage电压issosmallthatthereisnoriskofelectrocution触电either. TheideaofaddingelectricitytofoodwasfirstexposedasanexperimentattheComputerHumanInteractionConferenceinAustinTexasin2012.Nakamuraandherteamconnectedawiretoa9﹣voltbatteryandpasseditthroughastrawplacedinacupofsweetlemonade.Volunteersreportedthatthechargedlemonadetasted‘blander'becausetheelectricitycreatedthetasteofsalt. Nakamurahasimprovedthetechnologytobeabletotransferanelectricchargetofoodthroughforksandchopsticks.Themetallicpartoftheforkisoneelectrode电极andthehandleistheotherNakamuraexplained.Whenyoutakeapieceoffoodwiththeforkandputitinyourmouthyouconnectthecircuit.Whenyouremovetheforkfromyourmouthyoudisconnectthecircuit.Soitactuallyworksasaswitch. SimonKlosehostoffoodprogramMunchieswhorecentlyvisitedNakamuratotryouttheforkhimselfcalledthisformof‘foodhacking'oneofthegreatesteatingexperienceshe'deverhad.WhenIfirstheardofelectricfooditsoundedscaryhesaid.Helatercontinuedtouseachargedforktoeatpiecesoffriedchickenandfoundthatthesaltinessconsiderablyincreasedastheelectricitywasconnected. Nakamurahasbeeneating‘electric'foodforthepastthreetofouryearsinanattempttounderstanditbetter.Forme‘foodhacking'isaboutstrengtheningorweakeningrealfoodshesaid.Itmayseemlikewe'recookingbutwe'reactuallyworkingonthehumansenses. 1Theelectricforkmaybenefitpeoplewho. A.needtogoonadiet B.havehighbloodpressure C.preferfoodfreeofsalt D.showinterestintastyfood 2Paragraph4mainlytellsus. A.howtheelectricforkworks B.whatmakesthecircuitconnected C.howthetechnologywasimproved D.whytheelectricforkwasinvented 3Fromthepassagewelearnthattheelectricfork. A.createsvirtualtaste B.changespeople'sdiets C.helpscurediseases D.replacessaltincooking
Thesandwichman Michaelriseseverymorningat400ingoodandbadweatherandwalksintohissandwichshop.By550he'smakingtheroundsofthesheltersonCentreStreets.He1out200sandwichestothehomelessbeforebeginninghisworkday. Itstarted20yearsagowhenMichaelcameacrossahomelessmannamedJohn.Hebegantohelphim2effortthen.DayafterdayhebroughtJohnsomefoodandwhenitwasreally3arestingplaceinhiscarwhileheworked.OnceheaskedJohnifhewantedtogetcleanedup.Itwasan4offerbecauseMichaelthoughtJohnwouldrefuse.5JohnsaidAreyougoingtowashme?Michaelknewthathewaslookingata6ofhispromise.ItwasatthemomentthatMichael7tohelpthehomeless. Michaelbeganhiswork.HereceivednosponsorshipsayingI'mnotgettingmedia8.Ijustwanttodosomegoodinmyway.Therearedayswhenit'ssnowingandIhaveahardtimeleavingmywarmbedandthe9ofmyfamilytogodowntownwithsandwiches.ButI've10. Michaelmakes200sandwicheseverydayforthepast20years.Idon'tsimply11thesandwichesonatableforthehomelesstopickup.Ishaketheirhandsand12themagooddaysaysMichael.OnceMayor市长Kochcametomaketheroundswithhim.They13themediaanditseemedlikeitwasjustthetwoofthem.ButofallMichael's14workingsidebysidewiththeMayorwasnotasimportantasworkingnexttosomeoneelse… Amanhad15fromthesandwichtakersandMichaelthoughtabouthimfromtimetotime.Hehopedthemanhadmovedontoamore16environment.OnedaythemancamebackgreetingMichaeland17sandwichesofhisowntohandout.HesaidMichael'sdailyfoodwarmhandshakesandwisheshadgivenhimthe18hebadlyneeded.AfterachievingsomesuccesshedecidedtodothesamethingasMichael. Themomentneededno19.Thetwomenworkedsilentlysidebysidehandingouttheirsandwiches.ItwasanotherdayonCentreStreetsbutadaywithjustalittlemore20. 1A.picks B.sets C.gives D.finds 2A.with B.around C.from D.over 3A.sunny B.warm C.cloudy D.cold 4A.silly B.empty C.crazy D.free 5A.Fortunately B.Disappointedly C.Surprisingly D.Thankfully 6A.test B.gift C.trick D.view 7A.demanded B.agreed C.pretended D.determined 8A.benefit B.attention C.sympathy D.information 9A.comfort B.wealth C.value D.honor 10A.suffered B.hesitated C.managed D.wondered 11A.check B.lay C.match D.cover 12A.witness B.predict C.follow D.wish 13A.ignored B.blamed C.confirmed D.handled 14A.situations B.memories C.schedules D.professions 15A.escaped B.volunteered C.disappeared D.survived 16A.competitive B.complex C.familiar D.stable 17A.carrying B.seeking C.occupying D.treating 18A.responsibility B.permission C.encouragement D.achievement 19A.purpose B.dialogue C.relief D.doubt 20A.luck B.fun C.pride D.hope
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