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化学课上我们曾经观察过如图所示的实验． （1）实验中，铜片上的白磷很快燃烧，其反应的化学方程式为 ； （2）该实验主要利用了铜片良好的 性，燃着的白磷熄灭后，去掉铜片上的白色固体，可看到...
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化学课上我们曾经观察过如图所示的实验.1实验中铜片上的白磷很快燃烧其反应的化学方程式为2该实验主要利
化学课上我们曾经观察过如图所示的实验.1实验中铜片上的白磷很快燃烧其反应的化学方程式为2该实验主要利
化学课上我们曾经观察过如下图所示的实验1实验中铜片上的白磷很快燃烧其化学反应方程式为2该实验主要利用
化学课上我们曾经观察过如图所示的实验.1实验中铜片上的白磷很快燃烧其化学反应方程式为.2该实验主要利
化学课上我们曾经观察过如图所示的实验.1实验中铜片上的白磷很快燃烧其化学反应方程式为.2该实验主要利
化学课上我们曾经观察过如图所示的实验.1实验中铜片上的白磷很快燃烧其化学反应方程式为.2该实验主要利
化学课上我们曾经观察过如图所示的实验.1实验中铜片上的白磷很快燃烧其化学反应方程式为________
化学课上我们曾经观察过如图所示的实验.1实验中铜片上的白磷很快燃烧其反应的化学方程式为2该实验主要利
化学课上我们曾经观察过如图所示的实验.1实验中铜片上的白磷很快燃烧其反应的化学方程式为2该实验主要利
化学课上我们曾经观察过如图所示的实验． 1实验中铜片上的白磷很快燃烧其反应的化学方程式为． 2
化学课上我们曾经观察过如图所示的实验.1实验中铜片上的白磷很快燃烧其化学反应方程式为.2该实验主要利
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化学课上我们曾经观察过如图所示的实验． 1实验中铜片上的白磷很快燃烧其反应的化学方程式为 2该
化学课上我们曾经观察过如下图所示的实验1实验中铜片上的白磷很快燃烧其化学反应方程式为2该实验主要利用
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化学课上我们曾经观察过如图所示的实验.1实验中铜片上的白磷很快燃烧其反应的化学方程式为2该实验主要利
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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.
我国自主研制的首艘货运飞船“天舟一号”已于2017年4月20日发射成功这标志着我国航天事业又跨入了一个崭新的时代肼N2H4是航天事业的功臣常用作火箭燃料．下列有关肼的说法正确的是
请在下表中各填入一种相应类别物质的化学式 从上表中选择你填写的物质各写一个符合下列要求的化学方程式 ①置换反应②复分解反应．
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.
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.
某同学对所学部分化学知识归纳如下完全正确的一组是
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星期天小林同学回家发现自家田里的小麦出现大面积倒伏现象就向其父母提出了一条合理化建议明年应在小麦生长期增施抗倒伏的化肥你认为增施的化肥是
超导材料为具有零电阻及反磁性的物质以Y2O3BaCO3和CuO为原料经研磨烧结可合成一种高温超导物质Y2Ba4Cu6Ox假设在研磨烧结过程中各元素的化合价无变化则x的值为
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.
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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
室验室开放日小明小佳小华小丽等同学来到实验室看到实验桌上摆放着四瓶无标签的试剂分别是两瓶固体和两瓶液体同学们决定对“固体与液体”之间的反应进行一系列探究． 1小明同学从一瓶固体和一瓶液体中各取少量试剂于试管中进行混合立即产生了一种无色气体对气体是何物质同学们进行了大胆的猜想小佳同学的 猜想可能是①②…． 2我想设计一个实验证明小佳同学猜想①是正确的实验设计如下 3小华想用如图给定的收集装置收集一瓶小佳同学猜想②中的气体则气体由填a或b端进入． 4小丽同学从另外两瓶试剂中各取少量试剂于试管中发现混合后固体发生了变化但无气泡放出．同学们对加入试管中的固体和液体从不同的反应类型物质类别等方面进行了大胆的猜想 猜想一 猜想二 猜想三 …．
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
教案备课库课学完以后化学学习兴趣小组对“金属活动性顺序”从内容规律以及应用等方面进行了总结．请你认真填写下面的空白内容 1金属活动性顺序表KCaNaAlZnFeSnPbHCuAgPtAu 2金属与酸反应的规律是． 试举出实际应用的实例可用化学方程式表示． 3金属与盐发生置换反应必须符合三点①KCaNa三种金属非常活泼不能把金属直接从其盐溶液中置换出来②③． 4试举出实际应用的实例可用化学方程式表示．
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.
享受生活离不开化学知识．下列有关生活常识的说法错误的是
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
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
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.
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
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