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一个数的50%和它的是相等的． ．（判断对错）
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一个数和它的倒数成反比例．判断对错
一个数的50%和它的是相等的．．判断对错
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一个数的50%和它的是相等的．．判断对错
一个数0除外和它的倒数成反比例．．判断对错
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一个数的50%和它的是相等的．．判断对错
一个数的倍数总比这个数的因数大． ．判断对错
一个数的50%和它的是相等的．．判断对错
一个数和它的倒数相等则这个数是
1
±1
±1和0
等式两边乘同一个数或除以同一个数左右两边仍然相等．．判断对错
一个数的平方和它的倒数相等则这个数是
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一个数的平方根和它的立方根相等则这个数是.
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英语课上老师要求同桌之间交换修改短文请你修改你同桌写的以下作文文中共存10处语言错误每句中最多有两处每处错误仅涉及一个单词的增加删除或修改. 增加在缺词处加一个漏字符号^并在其下而写出该加的词. 删除把多余的词用斜线\划掉.修改在错的词下面画一横线并在其下面写出修改后的词. 注意1.每处错误及其修改均仅限一词2.只允许修改10处多者从第11处起不计分. Videogamesareverypopularamongusstudentsandespeciallyboys.Someevengotaddictedtothem.Itistruethatsomevideogamesaregoodforourthinkingabilityanditcansometimeshelpustorelax.Howeversomestudentsspendtoomanytimeonthem.Onmyopinionweshouldlearntocontrolourselves.Weshouldfinishourhomeworksfirsteverydayandthenspendalittletimeplayvideogames.Asstudentsthemostimportantthingistostudyhardly.Weshouldtryourbestgetgoodgradesandbecometheusefulpersoninthefuture.
VisitorstoBritainmayfindthemostmarvelousplace61enjoylocalcultureisinatraditionalpub.Butnewcomersmayget62troubleinthesefriendlypubs.Strangersmaystartwiththedifficultyofgetting63drink.Mostpubshaveno64wait﹣youhavetogotothebartobuydrinks.Thismaysound65conveniencebutEnglishpeopleareusedtodoingso. Pubcultureisformedtohelppeoplegetalongwitheachother.Standingatthebarfor66serveallowsyoutochatwithotherswaitingfordrinks.Thebarcounteris67possibletheonlyplaceinBritain. Thoughafriendlyconversationwithstrangersisconsideredtobeentirelyproperandreallyquitenormalhoweverifyoudonotfollowthelocalrulesyoumayfailtofeelthelocalculture.Forexampleifyou68beinabiggroupitisbestforoneortwopeopletogotobuythedrinks.Nothingmakestheregularcustomersandbarstaff69angrythanagroupofstrangers70standinfrontofthebarwhiletheychatandwonderwhattoorder.
小明一共有48元买一个文具盒用了总钱数的文具盒多少钱一个
Inthewintersof2012and2013NationalGeographicgrantee被批准人AndersAngerbjornandhisPh.D.studentRasmusErlandssonstudiedanextremelythreatenedspeciestheScandinavianarcticfoxThecurrentpopulationnumbersarefewerthan150individualsinmainlandEuropesomanyoftheyoungfoxesarehavingdifficultyfindinganon﹣relatedpartner.Otherthreatstothespeciesincludecompetitionfromtheredfoxfortheraresmallrodents啮齿目动物theybothdependuponforfood.AngerbjornandErlandssonmonitoredthearcticfoxpopulationinVasterbottenandNorrbottenSwedentoidentifythebestareasforfurtherconservationactions.Thisincludedtagging贴标签于thebabyfoxeswhichprovedtobeachallenge. Whencatchingarcticfoxesitiseasytobelievethatthesmalleronesaretheeasiesttohandle.Insomeaspectsitistrue.Theirteetharesmallerandthejawslesspowerful.Howeverjustashumanchildrenhaveahardtimekeepingstillthereallysmallcubs幼兽dotoo. Wehandlethefoxesinabagwhiletaggingandthetrickistokeeptheanimalstillbetweenyourlegswhilekneeling.Andherecomesthetrickypart.Howdoyoukeepasmallwildfoxstill?Youcannotapplytoomuchforce.Youreallydonotwanttohurtit.Justaswithsmallchildrenthebesttoolispatiencebutatthesametimeyouwantthehandlingtobeasshortaspossible. OneparticularcubhadatechniqueIhadneverexperiencedbeforeasitcontinuouslytriedtoturnontoitsbackfornoobviousreason.IhadtoreachtheearssoIquicklyturnedthecubupright.Thecubstayedstillforafewsecondsandthenbegantorollontoitsbackagain.Thesamethinghappenedoverandoveragain!FinallyIgotthetagsinplaceandaftermakingmeasurementsandtakingsomesamplesIfinallyletitgo. 25.Accordingtothetexttheredfox. A.lookslikethearcticfox B.isanendangeredspecies C.needsmoreconservationactions D.competeswiththearcticfoxforfood 26.WhatdoestheunderlinedwordThisinParagraph1referto? A.Providingfoodforthearcticfox. B.Checkingthenumberofthearcticfox. C.Buildingconservationareasforthearcticfox. D.Helpingthearcticfoxfindanon﹣relatedpartner. 27.HumanchildrenarementionedinParagraph2toexplainthat. A.kidslovethearcticfox B.babyfoxescanbedangerous Citisdifficulttotagbabyfoxes D.thesmallerfoxesareeasiertohandle 28.TotagsmallcubsAngerbjornandErlandssonhadtobe. A.brave B.patient C.creative D.strong.
完形填空 阅读下面短文从短文后各题所给的四个选项ABC和D中选出可以填入空白处的最佳选项并在答题卡上将该项涂黑. Neitherofmyparentswasthecuddly喜欢拥抱的type.Maybethat'swhyI41kissingpeopleandhuggingmademefeelawkward. One42changedallthat.Onemonthbeforemy40thbirthdaymydadhadheartsurgery.Ashe43hegrabbedmeandhuggedmeveryhard.Itwasahugtomakeupforallthosewehadneverhad. Dayslaterhetoldme44everthathelovedme.Throughmy45ItoldhimIlovedhimtoo.Ibeganimagining46himthroughtheparkandfeedinghimhome﹣madefood.47justasIwasgivenproofthathedidhe48. MyparentsdivorcedwhenIwas2yearsold.Isawmydad49butIwasafraidofthe50.Hishousefeltcoldandunfriendly.Eachstay51inanuncomfortablekissonthecheekaswesaidgoodbye. Toachildahug52manythings.Ittellsyouthattheperson53youandcaresforyou.MonthsafterDad'sdeathIrealizedthathis54ofhugssaidmoreabouthimthanme.Myfatherdidn'tliketoshowhisfeelings.55thatdidn'tmeanIwasn't56. 57timemovedonIrealizedthathishugandloveonhisdeathbedhadmademefeel58inawayIhadneverfeltbefore.Hewasamanoffewwordshewasintelligentkindandextremelymodest.Ironically讽刺的是Ibegantofeelclosertomyfather59thaninlife.Inowlove60betterthanagoodold﹣fashionedhug. 41.A.ignored B.hated C.enjoyed D.loved 42.A.smile B.greeting C.kiss D.hug 43.A.camedown B.camethrough C.cameround D.camein 44.A.atanytime B.forthefirsttime C.fromtimetotime D.ingoodtime 45.A.tears B.voices C.eyes D.hands 46.A.helping B.wheeling C.hugging D.dragging 47.A.Sadly B.Eventually C.Surprisingly D.Slowly 48.A.disappeared B.retired C.felltosleep D.passedaway 49.A.unhappily B.uneasily C.occasionally D.gently 50.A.visits B.movements C.activities D.affairs 51.A.gathered B.returned C.received D.ended 52.A.reports B.says C.arranges D.knows 53.A.praises B.misses C.welcomes D.loves 54.A.lack B.need C.list D.most 55.A.Therefore B.Thus C.But D.Yet 56.A.enjoyable B.satisfied C.lovable D.beautiful 57.A.Since B.As C.Although D.Because 58.A.calm B.friendly C.strange D.safe 59.A.indeath B.inneed C.firmly D.secretly 60.A.everything B.anything C.nothing D.something
小巧以65米/分的速度步行从家里出发去少年宫．出发16分钟后妈妈发现小巧把垃圾分类资料忘了于是骑车以195米/分的速度去追．已知小巧家与少年宫之间的路程是2100米．妈妈能在小巧到达少年宫之前追上她吗
OpheliaandtheMarvelousBoybyKarenFoxlee TypeFantasy WhenOpheliamovestoastrangecitywhereitneverstopssnowingshediscoversaboylockedawayfor75yearsinamuseum.ShemusthelptheboybeforetheSnowQueenfreezestheworld.AlongthewayOphelialearnshowtobelieveinthingsshecannotsee. TargetedreadersPeoplewholikefairytaleswouldenjoythisbook. AHundredHorsesbySarahLean TypeMystery ThewoodenhorseNellbringsalongduringhervisitstoauntandcousinsisstolenbyagirlnamedAngel.AsNellfindsoutAngerstrueidentityabondgrowsbetweenthemandagroupof99horses.Wordhasitthatthe100thhorseismagical.Butwhereisit?Nelldoesn'tknowbutAngelmightknow. TargetedreadersKidswholikeanimalsandnaturewillbesuretofindthisbookexciting. HowtoCatchaBoglebyCatherineJinks TypeFantasy Birdieisanorphanwhoisgoodattrappingmonsterswithhersingingvoice.Sheistheonlygoblin妖精hunterintheworld.Whenkidsgomissingit'suptohertofigureoutwhy. TargetedreadersAnyonewhoislookingformonsterswilltakegreatpleasureinthisbook. IEvenFunnier.AMiddleSchoolStorybyJamesPattersonandChrisGrabenstein TypeFiction AfteracaraccidentJamieloseshisfamilysohemovesinwithhisauntuncleandhiscousinSteviewhosebasicaimistotrickJamie.ButJamiekeepshavingapositiveattitudeandrunningafterhisgoals.HehasbeenrecentlyhonoredtheFunniestKidComicofNewYorkState.TargetedreadersThisbookwouldbegreatforanyonewhoisfondofhumorousbooks. 1Whichwritertellsastoryaboutagirlsavingtheworld? A.KarenFoxlee. B.SarahLean. C.CatherineJinks. D.JamesPattersonandChrisGrabenstein. 2Natureloversmaytakeinterestin. A.OpheliaandtheMarvelousBoy B.AHundredHorses C.HowtoCatchaBogle D.IEvenFunnierAMiddleSchoolStory 3Whogoesthroughlifechallengeswithoutlosingheart? A.Ophelia. B.Nell. C.Birdie. D.Jamie. 4Inwhichsectionofanewspapercanweprobablyfindthispassage? A.Fashion. B.Literature. C.Business. D.Localnews.
Thebiggestchallengefacedbytravelersespeciallythosewholiketohaveabackpackingtripishowtoensureasteadysupplyofcleanclothes.NowthankstoagreatinventioncalledScrubbaWashPackthatworrymaybeathingofthepast. TheportablewashingmachinewasinventedbyAshNewlandin2010whileplanningtoclimbMt.Kilimanjaro.Struckbythelimitedpackingspacehegotinspirationfromtraditionalwashboardstocreateahagthatcouldbeusedtocleanclothes.Thenhequittedhiscareerasalawyerandfocusedonperfectingthebag'sdesign.By2012thebagwasreadyforthepublic.Itweighedonly180gramsandrequiredverylittlestoragespacemakingitperfectforanyonewishingtotravellight. Notsurprisinglythebagworth55dollarswasininstanthitwithtravelersuniversitystudentsandevenpassengers.HoweverNewlandwasnotsatisfied.Hestillsawadisadvantagewithhisinvention﹣dirtyclotheshadtohecarriedaroundinaseparatebag!TherecentlyintroducedScrubbaWashPacksolvesthatproblem. Inordertomakethepackactivedirtyclothesareplacedinsidethebagalongwithtwoorthreelitersofwater.Thebagisthenshuttightlytoensureallairissqueezedoutandtheclothesaremassagedforafewminutes.Afteraquickwashtheyarecleanandreadytobedried.AccordingtoNewlandthepackcancleananythingfromjeanstosmellysocks!What'sevenmoreamazingisthatwithacapacitytohold13﹣litersofwateritcanbeusedtowashmoreclothesatatime. Thebestpatisthatthe99﹣dollarpackthatwillbeavailableforsalelaterthisyearonlyweighs300gramsandiscompletelyfoldablemakingiteasytostorewhenit'snotinuse.WiththeScrubbaWashPackwanderingthroughforeigncitiessearchingforawashingshoporpayingforwashingmachinesmaysoonbeathingofthepast! 28.WhatledAshNewlandtocreatetheScrunbaWashPack? A.Hisjobrequirements. B.Atraditionalwashboard. C.Hisinterestininvention. D.Hispersonalexperience. 29.Whywasn'tAshNewlandsatisfiedwithhisformerinvention? A.Clothescouldn'tbewashedwell. B.Theinventionwasnotsoconvenient. C.Thebagcouldn'tcontainenoughwater. D.Thecostoftheinventionwasveryhigh. 30.ItcanbeinferredthattheimprovedWashPack. A.turnstobemuchenvironmentallyfriendlier B.willreplacethetraditionalwashingmachines C.willbewidelyusedbymoretravelersinthefuture D.canencouragemorepeopletotravelalongdistance 31.Whatisthebesttitleofthispassage? A.AthingofthepastTravelers'worryoftheclothes﹣washing. B.TheScrubbaWashPack﹣Abagfreeofwashing. C.Thedevelopmentofagreatinvention. D.Howtodesignanewpackfortravelers.
Mostpeoplewouldneverevenconsiderquittingwithouthavinganotherjoblinedupandevenfewerwouldrecommendit.36Andsomeonedeartomeisalsogoingtoquit.It'sdefinitelynotasolutionforeveryone.Butitisanoptionthatrequiresalotofstrengthdeterminationandpreparation.Threethingsyoumusthavebeforebecomingdeliberatelyunemployed ※Asolidsupportsystem.Surroundyourselfwithpeoplewhowillencourageyouandacceptyourdecisioneveniftheydon'tagreewithit100percent.37.You'realreadyscaredenough.Alsoyoushouldknowwhonottotell.Noteveryoneneedstoknoweverydetailaboutyourlifeespeciallyifyouknowyou'llreceivealotofnegativecomments. ※Money.38Youneedenoughmoneytosupportyouintwotothreemonthsoflifeorawaytoearnmoneyonapart﹣timeorcontractbasis. ※Confidence.Youneedtoknow﹣andImeanreallyreallybelieve﹣thatyou'regoingtomakegreatachievements.Chancearethatyouwillexperienceemotionalupsanddownsonceyou'redeliberatelyunemployed.39Atthesametimeanxietyandfearwillappear.Trustandconstantlyremindyourselfchatyoudidtherightthingandthatyouwillbeokayandhappierthanever.40 A.ButIquitmybestfrienddidtoo. B.Theyshouldbehonestwithyoubutnotinatrying﹣to﹣scare﹣youkindofway. C.Theriskisworththereward. D.Quittingneedsgreatcourage. E.Doubtwillgraduallydestroyyourself﹣confidence. F.Atthistimeconfidenceisofvitalimportance. G.Thisiswhenyouremergencyfundcomesinhandy.
假定你是李华听闻国外某网站要在全球范围内评选TheMostQualifiedStudent最美中学生请你用英语给该网站写一封推荐信.内容包括 1.介绍被推荐人林扬的基本信息 2.说明推荐理由. 注意 1.词数100左右 2.可以适当增加细节以使行文连贯 3.开头语给出不计入总词数. DearEditor Yourssincerely LiHua.
Persuasionistheartofconvincingsomeonetoagreewithyou.AccordingtotheancientGreekstherearethreebasictoolsofpersuasionethospathosandlogos. Ethosisaspeakerswayofconvincingtheaudiencethatsheistrustworthyhonestandreliable.Onecommonwayaspeakercandevelopethosisbyexplaininghowmuchexperienceoreducationshehasinthefield.Afterallyou'remorelikelytolistentoadviceabouthowtotakecareofyourteethfromadentistthanafireman.Aspeakercanalsocreateethosbyconvincingtheaudiencethatsheisagoodperson.Ifanaudiencecannottrustyouyouwillnotbeabletopersuadethem. Pathosisaspeaker'swayofconnectingwithanaudience'semotions.Forexampleapoliticianwhoistryingtoconvinceanaudiencetovoteforhimmightsaythathealonecansavethecountryfromaterriblewar.Thesewordsareintendedtofilltheaudiencewithfearthusmakingthemsupporthim.Similarlyananimalcharitymightshowanaudiencepicturesofinjureddogsandcatstomaketheviewersfeelpity.Iftheaudiencefeelsbadfortheanimalstheywillbemorelikelytodonatemoney. Logosistheuseoffactsstatisticsorotherevidencetosupportyourargument.Anaudiencewillbemorelikelytobelieveyouifyouhaveconvincingdatatobackupyourclaims.Presentingthisevidenceismuchmorepersuasivethansimplysayingbelieveme. Althoughethospathosandlogosallhavetheirstrengthstheyareoftenmosteffectivewhenusedtogether.Indeedmostspeakersuseacombinationofethospathosandlogostopersuadetheiraudiences.SothenexttimeyoulistentoaspeechwatchacommercialorlistentoafriendtrytoconvinceyoutolendhimsomemoneybeonthelookoutfortheseancientGreektoolsofpersuasion. 28.Whydoestheauthorsaypersuasionisanart? A.Theybothentertaintheaudience. B.Theybothrequiregreatskilltoachieve. C.Theybothdemandfullattentionfromtheaudience. D.TheywerebothcommontopicsofancientGreekwriters. 29.Howisaspeakerabletoshowherethostotheaudience? A.Byexpressinghersympathywiththeaudience. B.Bytellingtheaudienceaboutherpersonalpreference. C.Byusingbeautifullanguagetomakeherstatementsattractive. D.Byshowingherknowledgeandexperiencerelatingtothetopic. 30.Whatcanwelearnaboutthethreeaspectsofpersuasion? A.Ethosisthemostimportantaspectofpersuasion. B.Eachaspecthasadifferenteffectontheaudience. C.Honestyisthekeytomakingyourargumentsbelievable. D.Politicalleadersmostlyusepathostopersuadetheiraudience. 31.Anadvertisementforwashingpowderwhichclaimsthatmanyscientifictestsshowthatourpowderkills95%ofallbacteriaismainlyusing. A.ethos B.pathos C.logos D.acombinationofallthree.
比一比．
假如你是李华是英国某所学校的交换生你于2015年10月14日在商店购买的电脑坏了请你根据下列提示给商店客服写一封信. 主要内容 1.写作目的 2.描述具体情况黑屏无法使用 3.建议解决办法更换或退钱 注意1.可适当增加细节使行文连贯 2.词数100左右. DearSirorMadam MynameisLiHuaanexchangestudentfromChina. YoursSincerely LiHua.
假如你是高三学生李华你的好朋友Nancy在你校的友好学校美国圣西诺高中读十二年级.你们常互通邮件最近你们刚谈论过中国梦这个话题.毕业在即她来信问你的梦想请给她写封回信.主要内容包括 1.对梦想的理解 2.你的人生梦想 3.如何实现你的梦想 要求1.词数100字左右2.信的开头和结尾已给出不计入总词数 DearNancy Yours LiHua
阅读下列短文从每题所给的四个选项ABC和D中选出最佳选项并标在答题卡上涂黑. EarthDayPhotoContest Apictureisworthathousandwords!EntertheTFKphotocontestandshowusWhyisEarthDayimportanttoourplanet? Toenteronlinevisittimeforkids.com/2017earthdaycontestandgetdetailsbelow. TIME ●ThecontestbeginsonJanuary92017. ●ThecontestendsonApril202017. INSTRUCTIONS ●AnoriginalandpreviouslyunpublishedphotographthatanswerstheEarthDayquestionWhyisEarthDayimportanttoourplanet?andthatwasphotographedbytheEntrant参赛者betweenJune12016andApril202017. ●AcaptiondescribingthepicturewhatishappeningwherethephotowastakenthedatethephotowastakenandwhyEntrantchosetoenterthisimage. ●Entrant'sfirstnameonlyEntrant'semailaddressandparent'steacher'sorguardian'semailaddress.Limitoneentryperperson.Sponsorisnotresponsibleforlostlateorincompleteentriesorentriesnotreceivedforanyreason.EntriesbelongtoSponsorandnonewillbeacknowledgedorreturned. ●ByenteringEntrantguaranteesthattheentryisoriginalandhasnotbeenpublishedinanymediumorwonanaward. ELIGIBILITY参赛资格 Opentoresidentsofthe50UnitedStatesandtheDistrictofColumbiawhoareelementaryschoolstudentsages8﹣13yearsattimeofentry. WINNERS'LISTandPRIZES Judgeswillselect10SemifinalistsfromwhichoneGrand﹣PrizeWinnerandnineFinalistswillbechosen.TheGrand﹣PrizeWinnerwillreceiveadigitalcamera﹣approximateretail零售value$300.00.ThephotographentryoftheGrand﹣PrizeWinnerwillbepublishedintheApril22EarthDayissueofTIMEForKids.ThephotographentriesofallSemifinalistswillbepublishedinthegalleryoftimeforkids.com.Winnerwillbeinformedbyemailandmustrespondwithinfivedays. 21.AnEntrantwhowillparticipateinthephotocontestshould. A.sendanoriginalphotoestablishingtheEarthDay B.presentarelevantdescriptionofthephotoentry C.informthesponsorofhisorherdelayedemail D.offerhisorheremailaddressandfamilyname 22.Whatdoweknowaboutthephotographentryofthewinner? A.Itwillbepublishedinamagazineandagallery. B.Itwillbeevaluatedatapproximately$300.00. C.ItwillbeselectedfromnineFinalists'entries. D.Itwillbeacknowledgedandreturnedafterwards. 23.Whoiseligibletoenterthephotocontest? A.acollegestudentintheUSA B.ateacherofanelementaryschoolinNewYork C.a10﹣year﹣oldelementaryschoolstudentinCalifornia D.anAmericanprofessionalphotographer.
一辆汽车行驶千米耗油升．照这样计算行驶15千米要耗油升．
WhateverNewYorkerKatyBensonwearsotherpeoplenotice.Itmightbesomethingsheherselfhasmadeoritmightbean41combinationofthingsshehasputtogether.Herfriendsmaynotalways42herlatestcreationbutthentheyjust43Katy'sunusualtasteandsayThat'skindofstrangebutitlooksOKonyou.Othertimesthoughtheycannotwaitto44her. AlloverAmericaclothingmanufacturersarecreatingcutting﹣edgekidslikeKaty.Theyknowwhatthese45youngpeoplearewearingtodaywillbewornbymillionsofotherstomorrow. Thisyouthmarketisabigbusiness.46fashionschangequicklyandmanufacturershavea47job.Therightproducthastobe48producedandshippedtothestoresattherighttime. Tohelptheyoften49edgekidslikeKatytodiscussnewproductsandfashions.Theseteenagersdonothaveto50anything.Theyarepaidgoodmoneyfortheir51whicharevery52whenacompanyisdecidingdirectionsitshouldandshouldnottake. Influencersareanotherimportantgroup.Theydonotinventnewtrends53theyarequicktoadopttheonestheyseeintheshops.Theyhave54amongtheirfriendswhoarelikelytofollowtheirchoices.55thethingstheydonotchooseneverbecomemainstream. SamOleksiisaninfluencesHealwayslooksforthingsthatare56andheshopseverywhere.Peoplesometimes57hislatestclothesbuttheymaywellbuythe58thingsafewmonthslater.LikeKatySamearnsmoneyfromhissenseof59. Edgekidsandinfluencerstogethermakeupfewerthanoneinfiveoftheirgeneration.Howevertheylargely60whatwillsoonbewornbytheothers. 41.A.different B.strange C.attractive D.obvious 42.A.like B.notice C.remember D.need 43.A.ignore Bavoid C.follow D.accept 44.A.praise B.teach C.persuade D.copy 45.A.smart B.pretty C.creative D.rich 46.A.However B.Therefore C.Besides D.Otherwise 47.Aboring B.difficult C.satisfying D.comfortable 48.A.made B.sold C.designed D.examined 49.A.encourage B.tell C.invite D.agree 50.A.prepare B.buy C.bring D.wear 51.A.opinions B.products C.photos D.articles 52.A.honest B.helpful C.objective D.special 53.Aand B.so C.but D.or 54.Areputation B.faith C.support D.power 55.AEqually B.Clearly C.Surprisingly D.Gradually 56.A.unusual B.cheap C.colorful D.new 57.A.putupwith B.payattentionto C.laughat D.worryabout 58.A.right B.same C.perfect D.necessary 59.A.fashion B.business C.direction D.freedom 60.A.understand B.predict C.explain D.decide
ScientistshavefoundamountsofwatermoleculesinsiderocksandsoilsamplesfromMarsbefore.Butanancientmeteorite陨石foundrecentlycontains10timesmorewaterandmuchmoreoxygenthananyMartianmeteoriteeverbeforediscovered. What'ssowildaboutthiswetdiscovery?ItcouldmeanthattheRedPlanetoncehadenoughwatertohaveliquidflowingontheplanet'ssurface. ItwasoncebelievedthatifMarseverhadwateratallitswaterwouldhavebeensmallamountsoficebelowthesurfaceorexistinginthesoilonlyashydrogenandoxygen﹣﹣﹣theelementsthatmakeupwater.ButrecentdiscoverieshaveshownthatMarsprobablyhadamuchwetterhistorythanformerlythought. ThemeteoritenicknamedBlackBeautywasfoundinAfrica'sSaharaDesertin2011.Onlyabout110meteoritesfromMarshaveeverbeenfound.ScientistsbelievemostMartianmeteoritesarrivedonourplanetduringonelargeasteroidcrash小行星碰撞thatsentrocksfallingtowardEarthlongago. BlackBeautyisabout2.1billionyearsold.ItsdiscoveryisthefirsttimescientistshavebeenabletostudysuchanancientMartianrock.It'salsooneofthefirsttimesscientistshavebeenabletostudyapieceoftheplanet'sancientsurface. Thesample'swatermoleculesweresentoutwhenscientistsheatedthemeteoritetoanalyzeit.Scientiststhinkthemeteorite'shydrogenandoxygenmoleculesaresoplentifulbecausewaterwasflowingonMarsatthetimethismeteoritefelltoEarthorbecausethesemoleculeswereoncesealedinlargequantitiesinMars'scrust. BlackBeautymightdomorethanjustunlocksecretsfromtheRedPlanet'spast.ThesediscoveriescouldalsohelpscientistsunderstandnewdataaboutMarsthat'sbeingsentfromtheroboticroverscurrentlygatheringinformationontheplanet. 32.Peopleusedtothinkthat. A.therewaslittlewateronMars B.Marshadalotofflowingwater C.alargequantityoficewasMars D.MarswasmuchwetterthanEarth 33.WhatdoweknowaboutBlackBeauty? A.ItwasdiscoveredinSeattleintheUSA. B.Itisthebiggestof110meteoritesformMars. C.ItlandedonEarthafteranasteroidcrash. D.Ithasahistoryof2.1millionyears. 34.HowdidthescientistsresearchBlackBeauty? A.Bycuttingitintopieces.B.Bydippingitintowater. C.Byburningitonafire.D.Byburyingitintoadesert. 35.Thepassageismainlyabout. A.arockfromthecenterofMars. B.amajorMartianmeteoritediscovery C.anewdiscoveryontheRedPlanet D.anumberofmeteoritesfromRedPlanet.
根据短文内容从短文后的选项中选出能填入空白处的最佳选项.选项中有两项为多余选项. Yourbraincontrolseverythingyoudo.Itmakesitpossibleforyoutothinklearncreateandfeeltoblink眨眼andbreatheandforyourhearttobeat﹣thisfantasticcontrolcenterisyourbrain.36 Canthissmallgreyorgan器官whichweighslessthanoneandahalfkilosreallydosomuch?Amazinglyyourbraincontainsabout100billionneurons神经元﹣itwouldtakeyouover3000yearstocountthemall.37Yourneuronscreateandsendmoremessagesthanallthephonesintheworld.Andalthoughoneneuroncreatesonlyalittleelectricityallyourneuronstogethercanproduceenoughelectricitytopoweralightbulb灯泡. Soexactlyhowfastdoesyourbrainwork?38Neuronsinyourskinsendthisinformationtoyourbrainataspeedofmorethan240kilometersperhour.Yourbrainthenusesotherneuronstosendthemessagebacktoyourfoottoshakethebeeoffquickly.39Nocomputerhasyourbrain'sunbelievableabilitytodealwiththeamountofinformationcomingfromyoureyesearsandothersensoryorgans. Buthowdoesyourbrainallowyoutolearnthingsthatyouwilluseinthefuture?Thestructure结构ofyourbrainchangeseverytimeyouhaveanewthoughtrememberorlearnsomething.40How?Asyoupracticeyourbrainsendsbikeridingmessagesagainandagain.Soontheactionsarelearntandyouareabletorideabikeeasilyfromthenon. A.Wellimaginethisabeelandsonyourfoot. B.Thereforeitisnotsurprisingtoseethatsomebodywithaverageintelligence智力canhaveexcellentperformancesinsomefields. C.Believeitornottheactivityinyourbrainneverstops. D.Itissoamazingthatafamousscientistoncecalleditthemostcomplex复杂thingwehaveyetdiscoveredinouruniverse. E.Thebrainisthebossofthebody. F.Theseneuronscansendthisinformationatmorethan320kilometersperhour. G.Forexampleridingabikeseemsimpossibleatfirstbutsoonyouareabletodoit.
Flyingcarsmaysoonbecomea61real.TherideshareserviceUberhasasked62expertfromNASAtheAmericanspaceagency63helpthecompanydevelopcarsthatcanfly. Uberplanstouseflyingvehicles64thefuturetoavoidtrafficinandaroundcities.Thecompanywantstousesmalltotallyelectricaircraft65couldtakeoffandlandlikeahelicopterontopofparkinggarages.Ubersaiditsflyingvehicleswouldbemuch66quietcostlesstooperateandproducelesspollutionthanhelicopters. OnepersoninSanFrancisco67writeonTwitterIusedtothinkthatflyingcarswasaridiculousidea.68IchangedmymindthismorningwhenIsatinaheavytraffic.AnotherpersonaddedfromMumbaiIndiaI'mreadingaboutUber69hireaNASAengineertobuildflyingcarswhileI'mstuckintraffic.Thereishope. Theexpertpredictstherewillbeseveralearlymodelsofcarsthatcan'tfly70theybutwithhumanpilotswithinonetothreeyears.
April032016 DearSir/Madam Overthepast6monthstheservicefromthegarbagecollectiontruckhasbeenverydisappointing.Wehavecomplainedtothetruckdriverbuthehasdoneverylittletosolvetheproblems.ThereforeIamwritingdirectlytoyourdepartmenttorequestyourhelp. Basicallytherearetwoproblems.Thefirstisthatthetruckneverfollowsthecorrecttimeschedule.YournoticesaysthatgarbagewillbecollectedinourareafromMondaytoFridayat6p.m.butthetruckalwayseitherarrivestoaearlyortoolate.Ithasbeenasmuchas15minutesearlyand25minuteslate.Thesecondproblemwhichismoreseriousisthatthetruckmovesofftooquickly.Ihaveseenpeoplerunningafterthemovingvehiclealmosteverytimemakingadisasterverylikely.Whatifthepersonrunningwerepregnantdisabledorelderly? AsImentionedatthebeginningwedidexpressourconcernstothedriver.Thefirsttimewespoketohimhewasverykind.Heexplainedverypatientlythatthedepartmentwastryingtomakeabettertimeschedule.Afterthathejuststartedignoringus.HonestlyspeakingIfeltthiswasveryrudeofhimandunprofessional. IftheseproblemscontinueIamworriedthatresidentswillstartdroppingtheirtrashonthecornerofthestreet.ThereforeforboththesafetyandhealthofeverybodyIhopethatyouwilllookintothismatterassoonaspossible. Yoursfaithfully TsaiChia﹣wen HYPERLINKmailtotsai.ch@pmail.comtsai.ch@pmail.com 21.Whatisthepurposeofthisletter? A.Tofindoutaboutrecyclinggarbage. B.Tocomplainaboutaserviceproblem. C.Toapologizeforalatedelivery. D.Torequestagovernmentdepartmenttoapologize. 22.Whendoesthegarbagetruckarriveusually? A.Almosthalfanhourlatesometimes. B.Ontimeasperschedule. C.Always15minutesearlyontheweekend. D.MondaytoFridayat6p.m.. 23.WhatdoesMs.Tsaihopethedepartmentwoulddo? A.Scoldorpunishthedriver. B.Ignoreherpreviousletter. C.Checktheevent. D.Createanewgarbagetruckservice.
我国发射的科学实验人造地球卫星在空中绕地球运行6周需要10小时36分运行15周需要多少小时用比例知识解答．
AshersonCameronsitsathislaptopcompletingataskforhismathdegreecourseAlisonThompsonafull﹣timemumisbusyhelpingherdaughterEmmatwoyearsyoungerthanCamerongetdressed.WhilehelphasalwaysbeenavailableforEmmaAlisonandherhusbandalsohavetofighttogetCameronthesupportheneeds.PeoplecouldseethatEmmahasspecialneedsbutbecauseCameronwasdoingsowellatschoolhisteachersneverthoughttherewasaproblemwithhim.saysAlison. IttookAlisonandherhusbandawhiletorealizetheirsonwasdifferent.Cameron'sabilitydidn'tbecomeclearuntilhebeganprimaryschool.Onceheevencorrectedtheteacherwhenshetoldtheclassthatzerowasthelowestnumber.Camerontoldhershewaswrongbecausetherewerenegativenumbers负数.Hewasfouratthetime.Now14﹣year﹣oldCameronisatsecondaryschoolstudyingforadistancelearningmathdegreewiththeOpenUniversityhavingsailedthroughhisGCSEat11andhisA﹣levelat12achievingtopgrades. BethanyanotherdaughterofAlisonisbrighttoobutnotgifted.Sheistheonewhowillremindabsent﹣mindedCamerontoputonhiscoat.Shealsohelpshimoutinsocialsituations. Emmaattendsaspecialistschoolandthefamilyisquicktocelebratehersuccessestoo. TheotherdayshedidupthebuttonsonhercoatwhichwasrealprogressAlisonsays. LatelastyeartheThompsonstookpartinatelevisiondocumentary纪录片toprovethatnotallgiftedchildrenaretheresultofextremelyambitiousparents.Giftedchildrenneedsupporttoobuttheirlivesdon'thavetobethatdifferent.Cameronisanexample. 1WhatdoesParagraph1indicate? A.CameronhelpsEmmawithhermathtasks. B.TeachersatschoolignoredEmma'sproblems. C.BothCameronandEmmaneedparentalsupport. D.ThecoupleoftenhavefightsbecauseofCameron. 2WhatdoestheunderlinedphrasehavingsailedthroughhisGCSEprobablymean? A.HavingpassedhisGCSEeasily. B.HavingtakenhisGCSEseriously. C.HavingworkedhardathisGCSE. D.HavingsufferedalotfromhisGCSE 3ThereareatleastpeopleinMrs.Thompson'sfamily. A.three B.four C.five D.six 4Whatcanbeknownfromthepassage? A.Emmahaslearnedtotakegoodcareofherself. B.Cameronshowedhisgiftbeforeprimaryschool. C.Thechildrenofthefamilyarebrightandgifted. D.Giftedkidsarenotsodifferentaspeopleexpect.
短文改错 假定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文.文中共有10处语言错误每句中最多有两处.每处错误涉及一个单词的增加删除或修改. 增加在缺词处加一个漏字符号∧并在其下写出该加的词. 删除把多余的词用斜线\划掉. 修改在错的词下划一横线并在该词下面写出修改后的词. 注意1每处错误及其修改均仅限一词 2只允许修改10处多者从第11处起不计分. DearMr.Hans IhavelearnedthatyouwouldholdadiscussionthisSaturdayafternoon.Iamwritingthisletterexpressmydeepestregret. ThereasonformyabsenceisbecauseIhavetomeetsomeforeignfriendfromAustraliathisSaturdayafternoon.Theirplaneisduetoarrivingthenanditisimpossibletorearrangemytime.ItisreallyapitythatIwillmisssoavaluableopportunitytosharehisthoughtswithyouaboutFrogbyMoYan.InadditionIwonderthatifyoucouldsendmeasummaryofthediscussionnextMondayandIpromisetoreturnthemassoonaspossible. I'mtruesorryformyabsenceandhopethatyouwillreceivemyapology. Yours LiHua.
AnewstudypublishedintheJournalofMarriageandFamilyclaimsthatallthattimeyouspendparentingjustdoesn'tmatter.Butit'saclaimthatdespitetheenthusiasticandwidespreadcoveragebythemediadoesnotholdwater. Theresearchsuggeststhatchildoutcomesincludingbehaviorproblemsemotionalproblemsandacademicperformancearebarelyconnectedwiththetimethatparentsspendwiththeirchildren.Theresearchersexaminedthetimediariesof1600childrenlookingatparentingtimeandoutcomeswhenthekidswereaged3to11in1997andagainin2002whentheywerebetween8and16. Thisresearchlargelyreflectsthefailureoftheauthorstocorrectlymeasureparentalinput投入.Itjustlookedattimediariesfromtwoparticulardays﹣oneaweekdayandtheotheraweekendday. Tryingtogetasenseofthetimeyouspendparentingfromasingleday'sdiaryisabitliketryingtomeasureyourincomefromasingleday.Ifyesterdaywaspaydayyoulookedrichbutifit'snotyouwouldbereportedaspoor.Yougetaclearerpictureonlybylookingatyourincome﹣oryourparentingtime﹣overamoremeaningfulperiod. Whatyoudidyesterdayshouldnotbetakenasrepresentativeofwhatyoudidlastyear.Thisiswhymosthigh﹣qualitystudiesofparentingtimefocusinsteadonhowoftenparentsreadtotheirchildrenplaywiththemorhelpthemwithhomeworkoveraperiodofamonthorlonger﹣longenoughtorepresenttheirdifferentapproachestoparenting. Asanexhaustedparentwhodoesn'tgetenoughtimetoworkoutandwhohasn'tseenamovieformonthsIunderstandwhysomanyofusmightseizeonstudiessuggestingthatweshouldtakemoretimeforourselves.Perhapsweshould.ButIagreewithArielKaliladevelopmentalpsychologistonthesuggestionthatwhenparentsspendhigh﹣qualitytimewiththeirchildrentheirchildrenaremorelikelytosucceed. 32.Whatdotheunderlinedwordsholdwaterinthefirstparagraphprobablymean? A.Tobevalid. B.Tobesurprising. C.Tobeconfusing. D.Tobeusual. 33.What'sthepurposeofconductingthestudy? A.Toexplorethelinkbetweenparentingtimeandchildoutcomes B.Toexplorethelinkbetweentimediariesandchilddevelopment. C.Toexplorethelinkbetweenchildren'shabitsandparents'influence. D.Toexplorethelinkbetweendailyactivitiesandchildren'sproblems 34.HowisParagraph4mainlydeveloped? A.Bygivingdescriptions. B.Byanalyzingthecause. C.Bymakingacomparison D.Byofferingresearchfindings. 35.Theauthormayagreethathigh﹣quality﹣studiesofparentingtimeshould. A.becompletedinonemonth B.adoptsomedifferentapproaches C.concentratemainlyonlearningtime D.bebasedondataofalongertimeperiod.
AsmoreandmoreanimalspeciesbegantodisappearfromKandalprovincetheCambodianmanSuySenglimgrewworried.SohecreatedaphotoprojecthopingtobringmoreattentiontothelossofnaturalhabitatinCambodia.HerecordsthecommonnameofeachcreatureitsscientificnameandidentifyingqualitieswhetherornotthespeciesisendangeredandhopestoeducateCambodiansabouttheimportanceofwildlifeprotection. Thebiggestissueisdamagetohabitatandhunting.Besidesthatitisduetodemandfromtherichwhodesirewildmeatandwhoconsiderwildmeatchemical﹣freehesaid. HuntingisattherootofCambodianculturehesaid.Buthenotesthatcenturiesagothereweremoreanimalsandfewerpeople.EducatingCambodiansabouttheneedforsavingnaturalresourcesisveryimportanttoSuySenglim. ChhitSamAthisexecutivedirectoroftheWorldWildlifeFundorWWFofficeinCambodia.Hesaidlandsalesanddevelopmentarepartlyresponsibleforasharpdropinthenumberoftrees.Itisestimatedthatprotectedareaswithinforestshavedisappearedatthesamerateasforestsinotherpartsofthecountry.Between2001and2014theyearlyrateofforestlossinCambodiawasthehighestintheworldthegroupsaid.Therateincreased14.4percentduringthatperiod.FloraandFaunaInternationalnotedalmost60percentofthecountrywasforestedin2009.Butitfellto48percentby2014. SuySenglimisnowworkingonabookon100birdspeciesfromamongthe400specieshehasphotographed.Hehopestopublishthebookinearly2018.Hesayshelooksforwardtoteachinginhighschoolsandcollegestoinfluenceanewgenerationofnature﹣lovers. 24.HowdoesSuySenglimfeelaboutthewildlifeinCambodia? A.Disappointed. B.Optimistic. C.Concerned. D.Annoyed. 25.WhatdidSuySenglimdo? A.Hehastakenpicturesofabout100birdspeciesinall. B.HemadeacarefulinvestigationofthewildlifeinCambodia. C.Heisnowworkingincollegestoeducateyoungpeople. D.HeworksattheWWFofficetohelpprotectwildlife. 26.WhatistrueaboutCambodia? A.Localpeoplearegoodathunting. B.Forestcoverageratefellby14.4percentfrom2001to2014. C.Richpeoplehaveaspecialinterestinwildmeat. D.ManyCambodianshaverealizedtheimportanceofwildlifeprotection. 27.Wheredoesthistextprobablycomefrom? A.Anewsreport. B.Asciencefiction. C.Amedicaljournal. D.Anagriculturalmagazine.
Maryhadfearedthedayshewoulddrawablankduringapresentation.Thenonedayduringa45﹣minutespeechithappened.36.TohelpherselfgetbackontrackMaryaskedtheaudiencetolookatthehandoutandtellherwhattopicwasupnext.Attheendofherpresentationaudiencemembersgavehertopmarksfororganization. WhatIlearnedisthattheaudiencedoesn'tcareifyoumessupandwhattheycareaboutiswhatyouaregoingtodoaboutitMarysaid.MynervousnesswentawaywhenIconcentratednotonmyselfbutinsteadjustthought‘Howismyspeechgoingtohelptheaudience?'37.Everysinglestepofthewayaskyourself‘What'sinitforthem?' ●38CarteristhefounderofCanada﹣basedpresentationskillstrainingcompany.Whenpossiblehegetstothelocationofhispresentationthedaybeforetomakesurealltheelectronicaidswork.Hewantstoensurethescreenlightingandinputsallworkproperly.Inadditionbuildanextraplanbeforeyoupresent.hesaid. ●Involvetheaudience Whetheryouaregivingaone﹣on﹣onetalkoraspeechinfrontof400peoplethinkstory﹣telling.39.Thewaytoaperson'sheadisthroughhisheart.Sometimesallittakesisafewsecondstoconnectanaudiencememberwithastory. Moreoveronethingthatshockspeoplebackintoattentionistoleaveanalmostuncomfortablylongpause.40. A.Keeporder B.Beprepared C.Thatbringsthembacktothespeaker D.Sheforgotwhatshewasgoingtosay E.Onceyoudothatitgetsridofthefear F.Story﹣tellingmakesmessageseasytoremember G.Storiescombinedataandinformationwithemotion.
计算．能简算的要简算 ＝
在400克水中加入100克盐这种盐水的含盐率是
ZhangJiangxinghasbeenwalkingthroughtheancientforestsoftheShennongjiaNationalNatureReserveforovertwodecadestofindthewildman.Hewillnotgiveupuntilhe1comeface﹣to﹣facewiththecreature.Hebeganlivinginthemountainin1994afterbecoming2extremefascinatedbythewildman.3armwithacameraheconstantlylooksforcluesofthecreature'swhereaboutslivingoffthelandand4sleepinabandonedhomesandemptycaves.Tohimthewildmanisabranchofscience5thathehasbeenstudyingforaverylongtime.Sofarhehascollectedenoughevidenceofthewildman's6exist﹣﹣﹣﹣morethan100hairsamplesand3000photosoflargefootprints.Heevencamecloseto7seeitforhimselfnolessthannineteentimes.Howevermostscientistsregarditasnothingmorethanalegendonly8thereisalackofconcreteevidence.ButZhangJiangxing9convincethathewillonedayfindthewildman10heandprovethescientistwrong.Tohimit'sjustamatteroftime.
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