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为了验证铝、银、铬三种金属的活动性，已知化学反应： ①2Al+3CrSO4＝Al2（SO4）3+3Cr ②Cr+2AgNO3＝Cr（NO3）2+2Ag ③Ag和H2SO4不反应...
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金属和金属制品与我们的生活息息相关铁铜银及其合金使用非常广泛1上述三种金属在地壳中含量最多的是___
人类的生产生活离不开金属1地壳中含量最高的金属元素是2在建筑工地露天放置的钢铁容易生锈钢铁生锈实际是
某学生为了验证锌银铜三种金属的活动性顺序设计了五个实验①将ZnCu分别放入稀盐酸中②将Ag放入CuN
①②
①③
②④
①⑤
实验室中验证金属活动性顺序的方法很多请用三种方法验证铁铜银的活动性顺序只写出所需试剂即可
为了验证铁铜银的金属活动性顺序设计了如下实验Ⅰ.将铁片浸入稀硫酸Ⅱ.将铜片浸入稀硫酸Ⅲ.将铁片浸入硝
张南同学为了验证铝铜银的金属活动性顺序设计了如下实验方案将铝丝银丝分别插入到硝酸铜溶液中如图根据实验
现有银铜铁三种金属某研究小组的同学为探究银铜铁的金属活动性顺序设计了如图实验1写出一个符合图中实验的
小彬同学家新买了水龙头从说明书上了解到该水龙头是铜质镀铬的他想起在学习金属性质时用到的金属活动性顺序
为了验证铁铜银三种金属的活动性强弱小明同学将铜片放入硝酸银溶液中观察到由此得出铜的活动性大于银．为
现有铬铜和银三种金属将金属铬和银分别放入硫酸铜溶液中观察到铬表面有红色物质析出银表面没有明显现象则这
铬＞铜＞银
铜＞铬＞银
铬＞银＞铜
银＞铬＞铜
为了验证铁铜银的金属活动性顺序设计了如下实验Ⅰ.将铁片浸入稀硫酸Ⅱ.将铜片浸入稀硫酸Ⅲ.将铁片浸入硝
下列有关金银铜三种金属的性质归纳中正确的是
常温下三种金属颜色不同
都能和稀盐酸反应生成氢气
只用一种试剂不能区分三种金属的活动性强弱
金的金属活动性最强
不锈钢材料中含有的金属铬Cr能提高钢的抗氧化性和耐腐蚀性为了解金属铬与常见金属铝铜在金属活动性顺序中
为了验证铁铜银的金属活动性顺序设计了如下实验Ⅰ.将铁片浸入稀硫酸Ⅱ.将铜片浸入稀硫酸Ⅲ.将铁片浸入硝
为验证FeMgAg三种金属的活动性顺序.实验室提供的药品有MgNO32溶液FeNO32溶液AgNO3
请根据常见金属的活动性顺序回答1在SnZnPt三种金属中活动性最强的是2在镁铜锌三种金属中不能与稀硫
现有银铜铁三种金属某研究小组的同学为探究银铜铁的金属活动性顺序设计了三个实验I.将铁片浸入稀硫酸中I
下列关于金属的说法正确的是
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用ZnCl2溶液、Fe和Cu三种物质能验证Zn、Fe、Cu三种金属的活动性强弱顺序
生活中不用金属银而用铜或铝做导线的原因是银的导电性比铜、铝差
实验课上化学老师拿来铁铜银三种金属要求同学们设计实验探究它们的活动性顺序.1一组同学做了如图①②③三
铝铁铜是人类广泛使用的三种金属.1人类开始使用这三种金属的先后顺序是用元素符号表示.2只用一种溶液验
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8分IsabellaNicolais10yearsold.Shewantedtolearntoplaytheviolin.Butshewasbornwithashortenedarmandwithoutalefthand.IsabellaattendsIslandCreekElementarySchoolinFairfaxCountyVirginia.Theschool'smusicteacherbuiltIsabellaaprostheticarm.ItletIsabellamovethebowoftheinstrumentwithherleftarmandholdtheviolinwithherrightarm.Buttheprostheticarmwasheavy.SotheteacheraskedforhelpfromGeorgeMasonUniversitywhichhehadattended. AtthesametimeAbdulGoudaandfourothermembersoftheschool'sbio﹣engineeringdepartmentwerelookingforaprojecttocomplete.Studentsmustcompleteaprojectintheirlastyearintheschoolinordertograduate.ThefirstprojectideaGoudaandhisfourteammateshadcouldnotbedone.Sotheyneededsomethingnewtoworkon. Goudaadmitshewasnotsurehewantedtotrytocreatealighterprostheticarm.It'ssortofalotofpressurehesaid.You'vegotthisyounggirlwho'scountingonyouandyou'reexpectedtodeliver.ButGoudaandtheotherteammembers﹣MonaElkholyEllaNovoselskyRachaSalhaandYasserAlhindi﹣acceptedtheproject.Theycompletedmanymodelsduringtheschoolyear.Researchonsimilarprojectshelpedtheminthebeginningbuttheymademanymistakesastheyworkedonthearm. RecentlyIsabellagottheteam'sfinalprostheticarm.Itwasbuiltusinga3﹣Dprinter.TheteammadethearmthecolorpinkasIsabellahadasked.Andtheteamsurprisedherwithanotherpartofthearmthatletsherholdontothefrontofabicycle.Sheputthearmonandbeganplayingtheviolin. IfeelveryblessedthatIhavethisamazinggroupofpeople.Isabellasaid.Isabellahadbeenaskingtoplayamusicalinstrumentformorethanayear.HermotherAndreaCabrerasaidshenevertoldherdaughter‘no.'Itoldherwewouldtry.Therewasnoguaranteetheschoolwouldbeabletodoanadaptationhermothersaid.Isabellaalwaysbelievedherdreamwouldcometrue.IfeltrightawaythatI'dbeabletoplayshesaid.I'vealwayshadperseverance. 24.WhydidGoudaandhisfellowscreateanarmforIsabella? A.Tomakesomemoney B.Towinascholarship. C.Tohelprealizeherdream. D.Tograduatewithhonors. 25.HowdidGoudaandhisfellowslearnabouttheneedofIsabella? A.Hermothertalkedtothemaboutit. B.Shesoughthelpfromthemherself. C.Herteacherturnedtotheiruniversity. D.Theygotthenewsfromthelocalpaper. 26.WhatcanwelearnaboutIsabella'snewarm? A.Itwasmadewithprofessionals'guidance. B.Itwascreatedbyhandwithdifficulty. C.Itbroughtgreathonorstothecreators. D.Itwasmorethanwhatshehadexpected. 27.Whatcanweinferfromthelastparagraph? A.Isabellaisagirlwithstrongwill. B.Isabella'smotherwashardonher. C.Theschoolwascertainoftheadaptation. D.Thegroupwassatisfiedwiththeresult.
8分ChildrenneedriskyplaylikeclimbingandjumpingfromaheightplayingwithknivesorplayingnearwaterorcliffssaysastudyreportonactiveoutdoorplayintheJournalofEnvironmentalResearchandPublicHealth.Itaddsthatchildrenwhodosoimprovetheirreactiontimeindetectingriskincreasetheirself﹣confidenceandarelesslikelytotakesrisksrelatedtosexanddrugsasadolescents. TheUSstudyfoundthatwhile86%ofchildrenbetweentheagesof7and11wenttoschoolwithoutanadultinthe1970sthisfellt025%in2015.81%ofparentsof10﹣to﹣12﹣year﹣oldswereworriedaboutstrangerdangeryetresearcherspointoutthatthechancesofabduction诱拐byatotalstrangerareoneinamillion.Seriousrisksfromplaygroundsi.e.chokedbyequipmentwhenparksusedtohaveropeshavelargelybeenremoved.AlargeNewZealandstudyofnearly31000childrenreportednoheadinjuryfromplaygroundsin2015.Brokenbonesmostlyinupperarmdohappenbutarerare﹣theUSstudyreportsanaverageof3injuriesper10000hoursofplaylastyear.Parentshavetohaveabalancedviewofthis.Theirchildathomeis500timesmorelikelytomeetastranger﹣theInternetactuallyhasmanycyber﹣bullies. MarkTremblaytheauthorofthestudyreportbelievesthatchildrenwon'tdevelopadaptabilitywithoutgettingalittlehurtandgettingbackupagain.Theevidencesuggeststhatchildrenself﹣regulateinplayinresponsetorisks.Anunmovinglifestylemightstopthemdislocatingshouldersbutleadstoobesityandotherdiseasesinlaterlife.playingunsupervisedoutsideleadstobetterself﹣regulationandpsychologicalhealth. There'sevenatermforoverprotectedkids:riskshortagedisorder.Tremblaysuggestsparentstrainthemselvesbyfirstlettingtheirchildrengooffontheirownfor20minuteshavingmadesuretheyknowhowtocrosstheroad. 1Whichofthefollowingisprobablyariskyplay? A.Playingintheneighborhoodsupervised B.Readingadventurousstoriesonthebus. C.Cyclingfastdownfromthetopofahill. D.Takingpartinanonlinerole﹣playgame. 2FromMarkTremblay'sreportweknowthat A.mostparentsofkidsbetween10and12worriedtoomuch B.aquarterofchildrenintheUSnowattendschoolalone C.headinjuryistheprimarycauseforchildrentogethurt D.only3in10000USchildrenbroketheirbonesin2015 3Researchersbelievethatchildrenneedriskyplaybecause A.parentswilllearntobalancetheirviewstowardssafetyandrisk B:achildplayingaloneislesslikelytobetakenawaybyastranger C.itsaveschildrenfromdiseasessuchasriskshortagedisorder D.itwilldomuchgoodforchildrenbothmentallyandphysically 4Whatwouldbethebesttitleforthetext? A.ChildrenAreOverprotected. B.RiskyPlaysAreNecessary. C.PlaygroundsAreRiskless. D.OutdoorActivitiesBenefitChildren.
8分IfyouevervisitanEnglishvillagemakesuretolookoutformorrisdancing.UndoubtedlyoneofthestrangesttraditionsofEnglishculturemorrisdancingisaformoffolkdancingthatdatesbacktothe15thcentury.Ifyouevergettheopportunityyoureallyhavetoseeit. Menandwomenwearingold﹣fashionedshabbyclothingdanceinthestreetsoftownsandvillagesacrossthecountryduringtheholidayperiods.Womenwearlongfrilly有褶皱边的skirtsandmenwearshorttrouserswithbellsattachedtothem.Theydancetotraditionalfolkmusicwhichisoftenplayedontraditionalmusicalinstruments. Somegroupscarryheavyblackstickswhichtheybeatagainsteachotherwhiletheydance.Othergroupswavehandkerchiefsintheairwhiletheyperform.Thedancesareusuallyperformednearapubsothatwhenit'soverthedancersandaudiencecansingsometraditionalfolksongsoverapintofbeer.Thecelebrationswilloftencontinuelongintothenightbywhichpointmostpeoplearetoodrunktothinkaboutperformingagain. MorrisdancingisagreatEnglishtraditionbutit'sfacingabigcrisis.Astheyearsgobyfewerandfeweryoungpeoplearejoiningmorrisdancinggroups.Thedancersaregettingolderandolderandeventuallyifnothingisdonetochangethistrendthetraditionwilldieoutwithinthenextfewdecades. Ifyou'veeverhadthefortunetoseemorrisdancingyoumayunderstandwhyteenagersaren'trushingtosignup.Puttingittothepointit'snotexactlythecoolestthingforan18﹣year﹣oldtobedoing.Whydressupinbellsandfunnycostumeswhenyoucouldbegoingclubbing?Orplayingsport?Ordoinganythingelse? HoweveritwouldbeagreatshametolosesuchafunandlivelypartofEngland'shistoryandculture.It'simportanttolookaftersometraditionsandcustomsespeciallywhenit'ssomethingasharmlessandhappyasmorrisdancing.Sohere'satoasttothenextgenerationofwould﹣bemorrisdancers!Let'shopetheydon'tleaveittoolate. 32.Whatisthepassagemainlyabout? A.Theoriginsofmorrisdancing. B.Thepopularityofmorrisdancing. C.Theprotectionofmorrisdancing. D.Theintroductionofmorrisdancing. 33.Whatdoweknowaboutmorrisdancers? A.Theydanceinpubslateintothenight. B.Theysingfolkmusicwhiletheydance. C.Theywearlongdresseswithbellsattached. D.Theyperformwithsticksorhandkerchiefs. 34.Whatisthepresentsituationofmorrisdancing? A.Itislosingappealamongyoungpeople. B.Itiskeepingpacewithpeople'sdemand. C.Itiswitnessinggreatchangesinhistory. D.Itisbeingcriticizedbymodernpeople. 35.Whatdoestheauthorthinkaboutmorrisdancing? A.Ithelpsstayhealthy. B.Itisfunforteenagers. C.Itdeservesmoreattention. D.Itistooold﹣fashioned.
在做“电流通过导体时产生的热量与什么因素有关”的实验时小于采用了如图甲所示的实验装置．两个透明的容器中密闭了等量的空气U型管中液面变化反映了密闭空气温度的变化． 1若通电时间相同发现B玻璃管内液面上升较高这表明在电流和通电时间相同的情况下导体的越大产生的热量越多． 2小刚采用了如图乙所示的实验装置通电相同时间发现A玻璃管液面上升较高这表明在电阻和通电时间相同的情况下通过导体的越大产生的热量越多． 3该实验中用到的研究物理问题的方法是法和法．
3分调查显示非洲孩子们梦想能获得干净的引用水免费的教育以及平等的权利.access .
2分他一到法国就发现很难适应那里的生活所以半年以后他毅然回到了曾经养育他的祖国.Nosooner….
3分Gold Indiaistheworld'slargestmarketforgoldjewellery.InmuchofAsiatheMiddleEastandIndiaaroundtwo﹣thirdsofthejewellerypurchasedisusedasawayofsavingmoneyaswellasbeingwornasadecorativeitem.Theuseofjewelleryasawayofsavingmoneyisoftenimportantinruralareaswherefindingabankisdifficultorevenimpossible.Peoplebuygoldbecauseitsvaluestaysstrongevenwhenthevalueofmoneygoesdown. Goldjewelleryhasoftenbeenawoman'sonlyvaluablepossessionandinsomefamiliesthisisstilltrue.Awoman'sgoldcanthereforebeheronlyprotectionagainstpersonalmisfortune.Todayallaroundtheworldsalesofgoldjewelleryhavegrownbyover20%peryearbecauseeveryoneisconfidentthatgoldwon'tloseitsvalue.Demandforgoldissohighthatgoldminescannotsupplyenough. Gold'sfunctionasadecorationasjewelleryhasbeenevidentforthousandsofyears.Sincetheearliesttimesthebeautyandrichnessofgoldalongwiththefactthatitdoesnotchangeitscolourhasmeantthatithasalwaysbeenthefavouritemetalofjewellers.TheearliestgoldjewellerydatesfromtheSumeriancivilisationthatwasatitsmostpowerfularound6000yearsago.IntheMiddleAgesancientpeopleattemptedtomakegoldfromothermetals.Theyusedgoldinmedicinesdesignedtofightoldageandprolonglife. Goldalsoperformsimportantfunctionsinmanyaspectsofeverydaylife.Itdoesnotreactwhenitcomesintocontactwithothersubstancesandthisalongwithotheruniquepropertiesmakesitusefulinmedicineandmanyotherareasthatweconsideressentialtoourmodernlives. Duringheartsurgerygold﹣coveredstentareputintoblockedarteriestohelptheflowofblood.Thesegadgetsneedtobecarefullypositioned.GoldisidealforthisbecauseitshowsupclearlyonX﹣raysandcaneasilybelocatedbydoctors.Apacemakeradeviceinsertedinthebodytokeeptheheartbeatregularalsocontainsgold.Goldisusedinalloftheseapplicationsbecauseofitshighlevelofreliability.Goldalsohelpsdoctorstodeliverprecisedosesofpowerfuldrugstothepartsofthebodywheretheyarerequired. Goldhasmanyotherapplicationsinmodernlifeasitconductselectricityveryefficiently.Thestandardtouch﹣tonetelephonecontains33contactsmadefromgold.Air﹣bagsystemsfittedinmorethan30millioncarsaroundtheworldrelyongold﹣coatedelectricalcontacts.Andeverytimeyoutouchakeyonyourcomputeritstrikesagoldcircuitthatsendsyourcommandtothecomputer'smicroprocessor.Infactyouhaveprobablyneverrealisedhowmuchgoldthereisinyoureverydaylife. Note:AnswerthequestionsorcompletethestatementsinNOMORETHANTENWORDS. 78.Comparedwithmoneypeopleprefersgoldbecauseof. 79.Goldwereusedinmedicinesbecauseancientpeoplebelieveditcould. 80.Whycangoldbeusedinpacemaker? 81.Whatmakestheapplicationofgoldinelectronicproductspossible?.
30分Iwasdiagnosedwithcancerat31.AtthattimeIworkedinthepublicserviceandwasvaguelyawareofan41namedSallywhowasinmydepartment.Whensheheardaboutmydiagnosisshe42meandwassupportivesincereandsympathetic.Iwassurprisedatthedepthofher43becauseshewasastrangertome. Ihadexpressed44abouthavingchemo化疗.Sojustbeforemyfirstchemoshegavemea45.Shetoldmeshe'dbegivingmeonejustbeforeeverychemo46Iwasfinished.I47I'dbehavingchemoeverytwoweeksformonths﹣Ididn'twanthertofeelobligated有义务的.ShetoldmethatshewantedmetosayWhatisthatSallygoingto48withthistime?insteadofI'vegotanother49chemosession. Eachtimeshefoundmeand50mewithsomethingacandleabookorasoap.Eachwas51chosenandbeautifullywrapped.Iwasabit52atfirstbutasthe53wentonIfoundmyselflookingforwardtoherpresents.Andshenever54one. Ihadthoughtitwouldn't55butitdid.Sheneverbrokeher56andthattouchedmeincredibly.Itdidn't57whatthechemogiftwas.Itmadeadifferencethatshecaredenoughtothinkofmeevery58knowingIwasgoingthrougha59courseofactionthatwouldintheendsavemylife.WheneverIlookatthesegiftsnowIalwaysfeel60toSallyforherbeingsokindandconsiderate. 41.A.friend B.colleague C.customer D.partner 42.A.approached B.persuaded C.appreciated D.instructed 43.A.purpose B.attempt C.devotion D.concern 44.A.expectation B.anxiety C.confidence D.disappointment 45.A.smile B.hug C.gift D.book 46.A.after B.until C.unless D.once 47.A.announced B.guessed C.explained D.admitted 48.A.turnup B.putup C.keepup D.endup 49.A.unusual B.powerful C.useless D.awful 50.A.presented B.equipped C.supplied D.filled 51.A.casually B.carefully C.quickly D.aimlessly 52.A.confused B.annoyed C.embarrassed D.touched 53.A.illness B.treatment C.relationship D.conversation 54.A.missed B.afforded C.wasted D.regretted 55.A.end B.happen C.1ast D.change 56.A.rule B.habit C.record D.promise 57.A.help B.matter C.mean D.occur 58.A.fortnight B.week C.month D.quarter 59.A.common B.tiring C.different D.pleasant 60.A.close B.sensitive C.grateful D.guilty
安培在法国科学院的例会上做了一个有趣的实验．如图所示在做好的螺线管中央穿一条细线把它悬挂起来．从理论上分析螺线管通电后产生磁场的N极会指向地理填“南极”或“北极”附近进一步研究发现通电螺线管外部的磁场与磁体的磁场相似．
离高考大约还有三个月的时间同学们都在积极有效地开展复习工作.请你谈谈你最后阶段3月﹣5月的复习计划以及制定该计划的思考或缘由. 写作内容必须包括以下两点: 1未来一段时间内具体的复习计划; 2制定该计划的原因分析.
10分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.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∧并在其下面写出该加的词. 删除:把多余的词用\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. DearSir/Madam I'mwritingtoexpressmyconcernaboutcheatinginexamsinourschoo1. Studentscheatfordifferentreason.ButwhenIfindmybestMendcheatingwithhissmartphoneinthefinalexamIwasgreatlyshocking.Nowadaysnewdevicesmakeitmuchmoreeasiertocheatthaneverbefore.Ourschoolhasbannedstudentsfromtakesmartphonesintoclassrooms.Thereforesomestudentsjusttakenonoticeit.Tohelpstudentshavethebetterunderstandingofhonestinmyopinionthebestwayistogetstudentsteachersandparentstotalkopenlyaboutit.Howdoyouthinkofmysuggestion? Lookingforwardtoyourreply. Yours John.
15分Intheincreasinglybusierworldwhereproductivityisonthemindsofmanyinsteadofdownloadingthelatesttimemanagementapporforcingyourselftostayatworkforhoursonendistherean51tobeingproductive?Thefirstthingweshouldknowisthatwillpowerisan52sourcethatcanbeentirelyusedup.Soinsteadof53yourselftosimplytryharderamoremethodicalapproachissuggested.Thefirststep:Getstarted!Itmayseem54butstudieshaveshownstartingaprojecttobethebiggestbarriertoproductivity.Beforestartingourbrainvisualizesthehardestpartstocomeandinsteadtriestosimulaterealworkbyfocusingonsmallmindlesstasks.55there'sconstructofthemindknownastheZeigernikEffect蔡格尼克效应whichhelpshumanstofinishataskthatthey'vealreadystarted.TheZeigernikEffectshowsthatwhenwedon'tfinishataskweexperience56andintrusivethoughtsaboutit.Sogetstarted.Nowwhatabouttimemanagement?Shockinglywhenwelookatmostoftheelitemusiciansintheworldwefindthattheyaren't57practicingmore.Insteadtheyfocustheirenergyonthehardesttask.Thosemusicianshaveperiodsofintenseworkfollowedbybreaks.Notrelyingonwillpowertheyrelyontheir58anddisciplinedscheduling.Studieshavefoundthatmosteliteviolinistsgenerallyfollowa90minuteworkrulewitha15to20minutebreakafterwardseveryday.Buthowcanyoudevelopthedisciplinetofollowthis59?Onekeypointisgivingyourselfadeadline;writeitdown;markitinyourcalendar.Andyou'llbemuchmorelikelytocompleteyourtask.Ontopofthiscreatesomethingcalledanaccountability问责制chartto60yourprogress.Inonecolumnwritethetimespanandintheothertheactivitiesyouaccomplishedduringthistime61thoseonadietwhorecordtheirfoodintake.Writingdownyourprogressallowsyouto62evaluateyourwork.Asopposedtoinaccuratelyassumingwhatyou'vedonefurther63yourprogresstotheendhelpstoavoidsmallmindlesswork.Andfinallystopmultitasking.Wellitmayfeellikeyou'reaccomplishingmore.Butactuallystudiesshowthatmulti﹣taskersaremuchless64.Insteadtryandmakealistatnightofwhatyouwanttoaccomplishtomorrow.Withyouractionplanyou65theideaoftryingtocompletemultipleactivitiesatonce.Yourbrainwillfindtheselesschallenging.Anditwillmakethestartingprocesseasier.Withacleargoalandactionplaninmindyourproductivitylevelscansoartonewheights.51.A.room B.secret C.attitude D.origin52.A.outstanding B.inevitable C.exhaustible D.essential53.A.convincing B.resisting C.preventing D.discouraging54.A.difficult B.complicated C.obvious D.visible55.A.Generally B.Luckily C.Unfortunately D.Briefly56.A.division B.mission C.interruption D.discomfort57.A.necessarily B.hardly C.efficiently D.purposefully58.A.patience B.habit C.perseverance D.principle59.A.feature B.intention C.guidance D.routine60.A.prove B.influence C.document D.determine61.A.similarto B.relatedto C.availableto D.owingto62.A.rapidly B.desperately C.objectively D.relatively63.A.targeting B.tricking C.timing D.tracking64.A.promising B.productive C.practical D.plentiful65.A.stickto B.faceupto C.decideon D.getridof
9分Weallknowthatregularphysicalexerciseisgoodforagirl'sbodymindandspirit.RecentlytheWomen'sSportsFoundation32discoverthatsportsoffersomeextrabenefitsforgirls33havingfunandgettingfit. Hereareafew: Girlswhoplaysportsdobetterinschool.Itisbelieved34athleticswilltakeupalltheirstudytime.Butresearchshowsthatgirlswhoplaysportsdobetterinschoolandare35likelytograduatethanthosewhodon't.Exerciseimproveslearningmemoryandconcentrationwhichcangiveactivegirlsanadvantagewhenitcomestotheclassroom. Girlswhoplaysportslearnteamworkandgoal﹣settingskills.Itisbyworkingwithcoachesandteammatestowingamesandmeetgoals36theygetgreatpracticeforsuccesslaterinlife.Beingateamplayercanmakeiteasiertoworkwithothersandsolveproblems37itisonthefieldorintheworkplace. Sportshavehiddenhealthbenefits.Girlswhoplaysportsarelesslikelytosmokeandhaveareducedchanceofgettingbreastcancerlaterinlife.Surethey38getthesebenefitsfromanytypeofexercise.Butiftheyhavetroublegettingtothegymtheremaybemoreincentive激励toshowupandplayiftheyknowtheircoachesorteammatesdependonthem. Playingsportsbuildsself﹣confidence.Girlsinvolvedinathleticsfeelbetterabout39bothphysicallyandsocially.Ithelpstobuildconfidencewhentheyseetheirskillsimprovingandtheirgoals40becomereality.
3分AvisittothevillageofKitaisaUgandaTherearenotmanyvisitorstoKitaisaandnotmuchthatwouldbringthemthereunlesstheyknowsomeonelivingthere.Mostofthevillagersliveadistancefromthemainroadandwheretheylivearepathsthataredifficulttotravelespeciallyduringtherainyseasons.Thereareafewshopssellingoilsugarteaflourcandles.Thereisnopetrolstationbutonewillfindaschoolandasmallgovernmenthospital.Buttherearenodoctorsjustafewnursesandmedicallytrainedstaff.Itisstillearlyandmostpeopleareoutsidecookingtheirmealsoverfirewood.Childreninuniformandwithoutshoesaregoingtoschoolmakingtheirwaythroughmuddypathsfromthenight'srain.Youcanseesomeadultspickingbeansorcultivatingthegroundaroundcornplants.Somechildrenarecarryingwaterfromthenearbyriver.Peoplearesittingoutsidehavingbreakfast.Childrenwillhaveporridgethefamilywilleatleftoverposhoorplantainbananascalledmatoke.Meatisnotofteneatenproteincomesmostlyfrombeans.Herelifeistoughthereissimplyalackofeverything.SomechickensarerunningaroundandIamtoldthattheyarebasicallyforeggsthoughonewascaughtandgiventomeforlater.Lifehereisverysimple.Thereisnolibraryherenonewspapers.Therewasalittlerestaurantwithsomeoutsidechairsabeautyshopandabouteightplaceswherefoodandothersuppliesweresold.Peopleinvillagesdon'tlivelongforthemostpartsincethereisnoinfrastructurehere.Therearenoambulancesandifyoudogetsickthereisnomoneytopayfortreatment.Thenearesthospitalis15kilometresawayinBusunjubuteventhatlargertownlacksfacilitiesthoughamedicalclinicistherewithadoctorunlikethesmallfacilityinKitaisawhichhasfewthings.Otherobviousproblemsarewithwaterandsanitation.Watertakenfromcreeksshouldbeboiledandtreated.Itisnotandbecauseithastobecarriedfromadistanceitisusedsparingly.Childrenbecomeillwithdiseasesthatcouldbepreventedthroughtheuseofsoapandwater.Therearenojobsinthevillageexceptcultivatingyourgarden.Youcantrysellingfoodalongtheroadbutthereisnowaytomakemoney.Youlearntoliveonlittleandtomakeeveryshillingcount.Somesupportcomesfromrelativesandifyouvisitsomeoneinthevillageyoubringthosethingsthattheydonothaveandwhenyouleaveyouleavethemsomecash.VillagepeopleinUgandaarefriendlyandhospitable.Theyarekindandshowtheirgracefulwaystooutsiders.Kidshoveradultsgreetyouliketheyhaveknownyouforever.69.WhatisthemostlikelyreasonforpeopletoKitaisa?A.Tovisitsomerelativesorfriends.B.Toenjoythebeautifulscenery.C.ToknowmoreaboutUganda.D.Tohelppeopleawayfromdiseases.70.WhichofthefollowingwordscanNOTbeusedtodescribethelifeinKitaisa?A.Hard.B.Peaceful.C.Boring.D.Ideal.71.Thewordinfrastructureparagraph6isclosestinmeaningto.A.enoughnutritionB.systemictransportationC.basicservicesD.high﹣qualityeducation72.Thepassagemainlytalksabouttheauthor's.A.expectationoftheunder﹣developingvillageB.experienceandfeelingsofthevisittothevillageC.suggestionsonthedevelopmentofthevillageD.descriptionofthebeautifulsceneryofthevillage.
30分Directions:WriteanEnglishcompositionin120﹣150wordsaccordingtothepictureandtheinstructionsgivenbelow. 1简要描述图片; 2就图片呈现的现象谈谈你的看法.
如图是空调的三脚插头与三孔插座请应用物理知识回答下列问题 1三脚插头中较长的脚E与空调的什么部位相连 2三脚插头插入插座时E脚又与插座中的地线相连这样连接的目的是什么 3针对日常生活中浪费电能的现象及用电习惯请你说出一种节约电能的方法．
如图是“探究磁场对通电导线的作用”的实验装置当闭合开关时导线ab中自由电子定向移动的方向是选填“从a到b”“从b到a”或“垂直ab方向”导线ab受到磁场力的作用而向左运动现在如果只将磁场方向变为与原来方向相反那么导线ab将向运动如果同时将电流方向和磁场方向相反那么导线ab运动选填“左”或“右”
25分假定你是学生会__李华.由于天气原因你们学校原定于周二举行的参观博物馆的活动有所调整请口头通知同学们相关事宜. 1.周二看电影 2.周四参观博物馆 3.电影名称观影时间地点等. 注意:1.词数100左右; 2.可以适当增加细节已使行文连贯. .
15分Itmaybecommonknowledgethat61BritishpeoplecallfootballisknownassoccerintheUSandcolourinBritishEnglishgoes62theuinAmericanEnglish.Butaccordingtoaninfographic图表63makerecentlybywebsiteGrammarCheckthesearefarfrombeingtheonly64differentbetweenthetwocountries'useofEnglish. Theinfographicoutlined63ofthemaincontrastsbetweenBritishandAmericanEnglishfromthe65muchwell﹣knownlift/elevatorandautumn/falltothelesswell﹣knowngarden/yardandpetrol/gasoline. Someofthevocabularymismatchesare66differentthattwopeopleinaconversationmayfailtomake67theyunderstood.Forexamplethetwocountrieshavedifferentnamesforcertainfood.BiscuitsandsweetsinBritain68knowascookiesandcandyrespectivelyintheUS. Butwhile69getfoodnamesmixeduponlycausesconfusionsomemisunderstandingsmayevenleadto70embarrassifyou'renotcareful.IfaBritishmanintheUSisaskedtoshowuptoapartyinpantsthere'sachancethathemightgetalotofstaresfromotherguests.
有一款新型智能电热水壶有高中低三挡并可以手动调节它的等效电路图如图所示其中R1＝R2＝88Ω均为电热丝阻值均不变．单刀双掷开关S2可接a或b． 1开关S1填“断开”或“闭合”S2接填“a”或“b”时电热水壶处于低温档． 2电热水壶处于中温档时的电流是多大 3用高温档加热时电功率是多大 4已知水的比热容为4.2×103J/kg•℃用高温档加热不计热量损失把1kg水从20℃加热到100℃需要多长时间结果保留整数．
6分Spanish﹣AmericanInstitute StudentCubNotes FreeandLowCostGymsHealthClubsandPools NYCDepartmentofParksRecreationCenters www.nycgovparks.org RecreationCenters:TheNYCDepartmentofParkshasmanyRecreationCentersthroughoutNewYorkCity.RecreationCentersofferawiderangeoffreeandmembershipprogramsandservices.Somehaveindoorswimmingpools.Almostallhaveweightroomsbasketballcourtsdancestudiosboxingringsartstudiosgameroomsetc. AllRecreationCentersofferawiderangeofprogramssuchasaerobicsdancetaichifencingcomputerclassesandart.Manyprogramsarefreeandopentothegeneralpublicbutmanyrequiremembership. YoudonotneedtobeaNewYorkCityresidenttouseaRecreationCenter.YoumayuseyourannualmembershipatanyandallCenters.UseoneneartheSpanish﹣AmericanInstituteandthenuseonenearyourhome. Costs:Freeandmembershipprograms.Standardannualmembershipis50forRecreationCentersand75forRecreationCenterswithpools.Doyouknowanyone55andolder?Theseniormembershipisonly10ayear. Standardannualmembershipprovidesscheduledaccesstothegympoolandalltheotherfacilities.Instructor﹣ledcoursessuchasaerobicsmartialartsmusicoryogamayrequireanadditionalfee. MembershipandProgramInformation:Gotothewww.nycgovparks.orghomepage.OntheFacilitiesmenuclickonRecreationCenters.OntheRecreationCenterspageyouwillfindinformationaboutmembershipandfees.YouwillalsoseelinkstoRecreationFacilitiesbyboroughBronxBrooklynManhattanQueensandStatenIsland. OntheFacilitiesmenuyoumayalsowanttocheckoutotherNYCDepartmentofParksfacilitiessuchasbeachesiceskatingrinksnaturecentersrunningtrackssoccerfieldsetc. RecreationCenters:ThereareseveralParksDepartmentRecreationCentersineachborough.AfteryougototheRecreationCenterspageandclickonaboroughyouwillfindalistofthecentersinthatboroughwiththeiraddressesphonenumbersandweblinks.ThelistwilllooklikethatforManhattanbelow.ClickonthelinkforaparticularCentertolearnmoreaboutitsservicesschedulesandprograms. 70.WhatspecialbenefitscananannualmemberofRecreationCentersenjoy? A.Havingaccesstoallthefacilitiesallyear. B.Experiencingallprogramsandservicesfree. C.TakingfreeInstructor﹣ledcourses. D.Usingonlythecenternearyourhomefree. 71.Ifyourparentsandgrandparentsbothoversixtywanttogetthemembershipshowmuchwilltheypay? A.Atleast20.B.Atleast120.C.Atleast180.D.Atleast220. 72.Youwillprobablyfailtofindonthewww.nycgovparks.orghomepage. A.thecostforvariousmemberships B.thelocationsofrecreationscenters C.thestaffandprovidedservices D.thefacilitiesphonesandweblinks.
8分PoliceofficerLeonclearedhisthroat.Here'sthesituationBen.Mrs.Grady'sfurcoatismissing.YourgrandmotherdoeslaundryandcleaningforMr.Gradyandtodayshepaidoffhermortgage.Hehesitated.Mrs.Gradysuspectsyourgrandmothertookthecoatandsoldit.ThelastsentencehurtBendeeply.That'snottrue!Shepaidoffthemortgagewithmoneywesaved.Leonsighed.Where'sthepapertrailyoungboy?Whatdoyoumean?Papersreceiptsrecordstheofficersaid.Documentsprovingwherethemoneywassaved.IfyourgrandmothersavedhermoneyIneedtoseeproof.Benhurriedintothebedroomandreturnedwithapieceoftabletpaper.Ononesideofthepaperwasalonglistofwordsandnumbers.Benhandedthepapertotheofficer.It'sallthere.WorkIdid.LaundryandcleaningOmadid.OfficerLeonturnedoverthepaper.What'sthis?Myoutsidebankmap.Weburiedthemoneyinajaroutinthegarden.SeethebankbuildingIdrewnexttothetree?.ButwhataboutMrs.Grady'sfurcoat?YoushouldaskMr.GradyansweredOmacalmlyfromthedoorway.Hehiredmetocleanupthefur.Ipromisedtokeepitasecretforhiswife'sbirthdayandIdelivereditjustnow.Mrs.Gradywasverypleased.Embarrassedbutpleased.Omasmiledpolitelyatthepoliceofficer.Aftertheywavedgood﹣byeOmasaidtoBen:Afierdinnerlet'supdatethemap.WhatforOma?Hereyestwinkled.Ithinkweneedtoaddanotheroutsidebank.Oneforschoolsupplies.Asmartboylikeyouwillneedalotofpencilsandbooks.1WhoisOmaaccordingtothepassage?A.Acriminalwhostealsmoney.B.Mrs.Grady'shousekeeper.C.Theyoungboy'sgrandma.D.Amanagerofthelocalbank.2Whatdoweknowabouttheoutsidebank?A.It'sapieceoftabletpaperkeepingrecords.B.It'sajarusedtohidemoneytheyearned.C.It'sabankwhichislocatedbesidesthetree.D.Omaborrowedmoneyfromittopayforthemortgage.3WhatareOmaandBengoingtodoafterdinner?A.Theywillopenanotherbankaccount.B.Theywillcelebratetheirinnocence.C.TheywillbuyschoolsuppliesforBen.D.Theywillburyanothercontainer.4WhichofthefollowingbestdescribesOmaaccordingtothepassage?APoorandhonest.B.Productiveandcalm.C.Generousandtraditional.D.Optimisticandcreative.
6分FrenchwriterFrantzFanononcesaid:Tospeakalanguageistotakeonaworldaculture.Sincetheworldchangeseverydaysodoesourlanguage.Morethan300newwordsandphraseshaverecentlymadeitintotheonlineOxfordDictionaryandinonewayoranothertheyareallreflectionsoftoday'schangingworld.Afterayearthatwaspoliticallyunstableit'snothardtounderstandthefactthatpeople'spoliticalviewsareoneofthemaindrivesofourexpandingvocabulary.Oneexampleisotherize.Itisaverbforotherthatmeanstoalienate使疏远peoplewhoaredifferentfromourselves﹣whetherthatbedifferentskincolorreligiousbelieforsexuality.WehadallthewordsaroundBrexit脱欧inthelastupdateandwearenowstartingtoseeallthewordsaroundTrumpcomingintothedictionaryAngusStevensonOxfordDictionaries'headofcontentdevelopmenttoldTheGuardian.Lifestyleisalsochangingourlanguage.Forexamplefitspiration﹣acompoundoffitandinspiration﹣referstoapersonorthingthatencouragesonetoexerciseandstayfitandhealthy.Thephraseclimaterefugee﹣someonewhoisforcedtoleavetheirhomeduetoclimatechange﹣reflectspeople'sconcernfortheenvironment.Butstillnotallnewly﹣inventedwordsgetthechancetomaketheirwayintoamainstreamdictionary.IfyouwanttocreateyourownhitwordsStevenson'ssuggestionisthatyoushouldnotonlymakesurethattheyareexpressiveandmeaningfulbutalsohaveanattractivesoundsothatpeoplewillenjoysayingthemoutloud.21.What'sthemeaningoffitspiration?A.Thepeoplewhohavehealthyspirit.B.Someoneorsomethingthathelpspeoplekeepfit.C.Alifestylewithfitandpositivespirit.D.Thepeoplewhooftendoexercisestokeepfit.22.Whichwordreflectsourcareaboutthesurroundings?A.climaterefugeeB.otherizeC.clicktivismD.fitspiration23.AccordingtoStevensonwhatshouldyoudoifyouwanttocreateyourownhitwords?A.Makesurethattheyareexpressiveandmeaningfulasmuchaspossible.B.Askforvaluableadvicefromlanguageexperts.C.Trytoimitatethewordsinamainstreamdictionary.D.Makethewordsmeaningfulwithfascinatingsound.
2分一篇文章通常由引言主体以及结论三部分构成.consist.
3分他明年将实施的计划包括健身运动参加考试和面试出国留学以及去欧洲旅游.carry .
10分Areyousickofgoingtobedlateandwakinguptired?36Anewstudysuggeststhatacoupledaysofcampinginthegreatoutdoorscanresetyourcircadianclockandhelpyougetmoresleep. Thecircadianclockmorecommonlyknownasthebodyclockisaninternalsystemthattellsourbodieswhenit'stimetogotosleepandwhenit'stimetowakeup.37 Inahealthysleepermelatoninlevelsriseafewhoursbeforebedtimestayhighthroughthenightandthensettlebackdownwhenit'stimetowakeup. Inourmodernsocietyhowevermostofusstayupmanyhourspastsunsetandwouldprobablysleepinmanyhoursaftersunriseifwecould.38Itmayalsohaveotherhealthconsequencesaswellsuchasdiabetesoverweightandheartdisease. ProfessorKennethWrightoftheUniversityofColoradointheUSwantedtoseeifourbodyclockscanberesetbyashortstayinnature.39Ninewentonaweekendcampingtripwhiletheotherfivestayedhome. Attheendoftheweekendtheresearchersreportedthatinjusttwodaysthecampers'bodyclockshadshiftedsothattheirmelatoninlevelsbegantorisemorethananhourearlierthantheydidbeforetheyleftonthetrip.40 A.Hepreparedalotfortheresearchandaskedmanyfriendstohelphim. B.Bycontrastthebodyclocksofthegroupthatstayedhomeshiftedevenlateroverthecourseoftheweekend. C.Scientiststrackthisclockbymeasuringtheamountofmelatonin褪黑激素circulatinginaperson'sbloodatanygiventime. D.Nowyouhaveagoodsolution. E.Histeamrecruited14physicallyactivevolunteersintheir20sand30s. F.Thengrabyourhikingbootsandatent. G.Andthetroubleisyourmelatoninlevelsmaystillbehighwhenyouralarmclockgoesoffinthemorningwhichleadstogrogginess.
9分Nooneshouldbeforcedtowearauniformunderanycircumstance.Uniformsaredemandingtothehumanspiritandtotallyunnecessaryinademocraticsociety.Uniformstelltheworldthatthepersonwhowearsonehasnovalueasanindividualbutonlylivestofunctionasapartofawhole.Theindividualinauniformlosesallself﹣worth. Therearethosewhosaythatwearingauniformgivesapersonasenseofidentificationwithalargermoreimportantconcept.Whatcouldbemoreimportantthantheindividualhimself?Ifanorganizationissoweakthatitmustrelyonclothandbuttonstoinspireitsmembersthatorganizationhasnorighttocontinueitsexistence.Otherssaythatthepracticeofmakingpersonswearuniformssayinaschooleliminatesallenvyandcompetitioninthematterofdresssuchthatapoorpersonwhocannotaffordgood﹣qualityclothingisnottobebelittledbyawealthypersonwhowearsexpensivequalityclothing.Thosepersonsconvenientlyignoresuchconceptsasfreedomofchoiceandindividuality.Itisonlyashortstepfromforcingeveryonetodrivethesamecarhavethesametypeoffoods.Whenthishappensallmotivationtoimproveone'slifeisremoved.Whywouldparentsbothertoworkhardsothattheirchildrencouldhaveabetterlifethantheyhadwhentheyknowthattheirchildrenaregoingtobeforcedtohaveexactlythesamelifethattheyhad? Uniformsalsohurttheeconomy.Rightnowbillionsofdollarsarespentonthefashionindustryyearly.Thousandsofpersonsareemployedindesigningcreatingandmarketingdifferenttypesofclothing.Ifeveryonewereforcedtowearuniformsartisticpersonnelwouldbeunnecessary.Salespersonswouldbesuperfluousaswell;whybothertoselltheonlyitemsthatareavailable?Thewearingofuniformswoulddestroythefashionindustrywhichinturnwouldhavearippleeffectonsuchindustriesasadvertisingandpromotion.Withoutadvertisingnewspapersmagazinesandtelevisionwouldnotbeabletoremaininbusiness.Oneentireinformationandentertainmentindustrywouldcollapse. Note:AnswerthequestionsorcompletethestatementsinNOMORETHANTENWORDS 78.Wearingauniformcoststheindividual. 79.Whatdoestheauthorthinkofanorganizationthatisweakandhastodependonuniformstoencourageitsmembers?. 80.Whydoestheauthordisagreewiththosebelievingthatwearinguniformseliminatesalljealousyandcompetition?. 81.Ifeveryonewereforcedtowearuniformsintermsofindustrybesidesadvertisingandpromotionwouldbeaffected.
3分Theelectricrevolution Themainreasonswhyelectriccarsarenotmorepopularatpresentaretheirpriceandtheirrelativelysmallrange. Existingbatterysystemsonlyallowelectriccars33traveladistanceofbetween100and160km.Howeverthisdistancemaynotbeaproblemforurbandrivers.ArecentSydneystudyreportedthat70percentofjourneyswere30kmorlessandrecentdatafromtheUSsuggeststhat77percentoftrips34takethereare48kmorless. AninnovativecompanycalledBetterPlaceisaimingtomakeelectriccarsanoptionforalldrivers.Itwantstoseeexistingvehiclesreplacedbyelectricvehicleswhichitsaysofferanumberofbenefits.Firstlytheycanbepoweredbyrenewableenergywhichproduceszeroemissions.35ismoreimportantisthatelectricmotorsaremoreefficientandcanconvertmorethan90percentofpowerintomovement.36achieveitsaimBetterPlaceplanstousetechnologyalreadyavailable. Theplanissimplebutrevolutionary.Itstartswiththeinstallationofahomechargepointandthroughthisthevehiclewillbepluggedintotheelectricitychargepointwheneveritisinthegaragetypicallyatnight.Inthemorningwithafullychargedbatterythecariscapableofasmuchas160kminurbanmotoringconditions.37thehomechargepointthebatterycanbetoppedupbychargepointsatworkandatsupermarkets. 38batteryislinkedtoacontrolcentrebysmarttechnologyinsidethevehicle.BetterPlacecanthenensurethatthecarischargedwithelectricityfromrenewablesourcesatthecheapestprice.For39longtripsanavigationsystemdirectsthedrivertothenearestswitchstation40thebatterycanbereplacedwithachargedonebyarobotwithinacoupleofminutes.
3分Thebestjobintheworld?ChocolateconsultantThiscouldwellbethebestjobforanyonewitheventhe51passionforchocolate﹣andyesjobslikethesereallydoexist.Therearelotsofdifferenttypesofchocolateconsultant.LouiseThomashasworkedinthechocolateindustryfortwoyearsandhasbeen52aboutchocolate.Shebecame53bythelackofeducationandawarenessregardingfinechocolatesostartedherowncompanytoshareherloveofthecocoabean.Shenowrunstastingstofindan54chocolateforeverycustomerortoextendtheirrange.Ifyoudon'tyethavewhatittakestobeachocolateconsultantyoucanstillworkwithchocolateasapastrychef.LEGO55Whohasn'tatsomepointintheirlifesatdowninfrontofaboxofLegoand56buildingorhelpingsomeoneelsetobuildafantasticcreationinmulti﹣colouredblocks?Forsomepeoplethisbecomesmorethanjustsomethingyoudidasakid.Legohasanumberof57whoworkwiththecompanytocreatesetsandbuildmodelsforthem.TheyworkagainstfairlytightbudgetsandthematicrestrictionsandarebasedinLegolandDiscoveryCentresaroundtheworld.Howevercompetitionforthejobsis58withestimatesvaryingastoexactlyhowmanythereareintheworld﹣from9to30.Thelatestonetogetajobwas23﹣year﹣oldAndrewJohnsonandthencompetedinatoughthree﹣roundbuild﹣off5945othercompetitors.Ifyoulovechildhoodtoysbutdon'tfancybuildingthemwhynotconsiderworkinginatoyshop?SharktankcleanerWindowcleaningisprobablynotthemostfunofprofessions.Howeveraddintherequirementtoshareyourjobwithalotofsharkswhilesimultaneously同时地60byacrowdofpeopleallofwhomarenodoubtsecretlyhopingatleastoneofthesharksisfeelingalittlehungryandsuddenlythe61levelsriseupalevelortwo.Howeverifyouwanttoworkwithfishperhapsthejobwouldbeagoodchoice.Professionalsleeper62you'readdictedtoyouralarmo'clockorspendalldayatyourdeskyawninganddrinkingcupsofcoffeetostayawakethenmaybeyoushouldconsiderturningyourcommentsintoaprofitablecareer.Believeitornotyoucanactuallygetpaidtowearthepajamas.63theseprofessionalsleepersparticipateinalotofuniversitystudiesonsleepordreamsetc.todecidewhetherthebedsarecomfortableornot.In2009duringanartshowatTheNewMuseumofContemporaryArtinNewYorkwomenwerepaidtosleepaspartofalivingartexhibitionsoyouneverknow64youcouldbeaskedtorestyourheadnext.Ifyouenjoyyoursleepyouprobablywantto65jobsthatleadtosleepwithdrawal.51.A.greatest B.blind C.smallest D.intense52.A.worried B.curious C.scared D.passionate53.A.lost B.frustrated C.enthusiastic D.inferior54.A.particular B.biggest C.sweet D.bitter55.A.examiner B.seller C.competitor D.builder56.A.takenup B.setabout C.givenoff D.gotin57.A.professionals B.bosses C.purchasers D.competitors58.A.fierce B.open C.fair D.international59.A.cooperatingwith B.beating C.discussingwith D.encouraging60.A.warned B.helped C.watched D.admired61.A.difficulty B.interest C.income D.profit62.A.Although B.Because C.If D.Unless63.A.Rarely B.Contrarily C.Consequently D.Typically64.A.why B.howlong C.where D.howoften65.A.avoid B.accept C.create D.offer
8分DistracteddrivershavebeencrashingcarssincethedaysofHenryFord.Buttodaycellphonesareoneofthebiggestcausesofcaraccidents. DavidStrayerapsychologistattheUniversityofUtahclaimedinarecentreportthattakingyoureyesofftheroadforafewsecondsisjustasdangerousasdrivingdrunk.Strayer'sresearchfoundthattalkingonacellphoneincreasestheriskofanaccident.Forcomparisonpurposessomeonewho'sdrunkata0.08bloodalcohollevelhasafour﹣timecrashincrease.Sotalkingonacellphoneisaboutthesameasdrivingdrunkhesays.Whenyou'retextmessagingthecrashriskgoesuptoeighttimes. Sowhycan'tdriverssimplystopreachingfortheirphones?AccordingtoStrayertheanswerliesindopaminewhichsendssignalstothebrainwhenarewardisreceived.Thesamechemicalalsoworksforaddictionssuchasgamblinganddruguse.ThereforewhilebehindthewheelpeoplearemorelikelytopickuptheirdevicetocheckitStrayertoldTheSeattleTimes.Whenthephonegoesoffpeoplefeelcompelledtolookatthatphone…becauseit'sactuallyapartoftheirsocialnetworkthat'sreachingouttothemStrayersaid. Andanotherreasontostayfocusedwhiledriving?Scienceshowsthefrontpartofthebrainisresponsibleformultitaskingdecisionmakingandplanning.Whendriversusephonesorotherelectronicswhilealsomakingdecisionsontheroadthey'reusingthesamepartofthebrain. It'saproblemofdualtasksStrayerexplained.Ourbrainisoverloadedthat'sreallywhathappensStrayersaid.You'retryingtodotwoseparatethingsatthesametimeandthereareissues. IntheUSatleast12statesbantheuseofhandheldcellphonesand41bantextmessagingwhiledriving.USlawmakersarecurrentlyconsideringproposalsthatwouldbanalluseofhandhelddevicesinmostsituationsandprohibitwatchingvideo. 28.Whatcanweinferfromthefirsttwoparagraphs? A.Todaycellphonesarethebiggestcauseofcaraccidents. B.Therearefewerdrunkdriversontheroadnowadays. C.Talkingonthephonehaseighttimescrashincrease. D.Distracteddriversareasdangerousasdrunkdrivers. 29.Whydiddriverskeepcheckingtheirphones? A.Theyareeagertoknowwhoiscalling. B.Theydon'twanttomisssomeimportantcalls. C.Theyaredrivenbyachemicalcalleddopamine. D.Theypaymuchattentiontotheirsocialnetwork. 30.Whycan'twefocusifwepickupthephonewhiledriving? A.Becauseweareeasilytiredwhendrivingacar. B.Sincewetendtofocusonthemessagefromthephone. C.Asthetwotasksaskfordifferentpartsofourbrain. D.Becausethedualtasksmakeourbrainoverloaded. 31.Whatdoesthepassagemainlytalkabout? A.Whydothephonescausecrashes? B.Howistheuseofphonesbanned? C.Howdoesthebrainreacttothecallingwhendriving? D.Whydopeopletendtoanswerthecallsinacar?
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