课时作业(五)[必修1Unit5NelsonMandela—amodernhero](限时：45分钟)Ⅰ.单项填空1．Wheneverwearein________trouble,weshouldneverlose________heart.A．a;theB．a;aC．/；/D．/;the2．PrincipalWhitehasbeenworkingintheschoolforabout20years,________allhisenergytoteachingandresearchingaswellastherunningofahealthyschool.A．devotedB．devotingC．todevoteD．anddevote3．Withthemoneyearnedfromtheschoolgarden,thestudentsboughtablackboard,chairsandotherthingsto________a“greenclassroom”．A．packupB．setupC．addupD．comeup4．Ican'tsayI'mthebest.Ihaveonly________mademoreeffortsthanothers.A．definitelyB．relativelyC．obviouslyD．certainly5．Apartfromtheopeningandclosingceremoniesandsomekeymatches,ticketpricewillbe________toordinarypeople.A．availableB．considerableC．acceptableD．practical6．Thetwonurses________100，000yuanbythepolicebutdonatedittovictimsoftheexplosion.A．rewardedB．wouldberewardedC．havebeenrewardedD．hadbeenrewarded7．She'shavingalotoftroublewiththenewcomputer,butshedoesn'tknowwhomto________．A．turntoB．lookforC．dealwithD．talkabout8．Thelastthirtyyears________thegreatestnumberoflawsstoppingourrightsandprogress.Untiltodaywehavereachedastage________wehavealmostnorightsatall.A．saw;whichB．see;whereC．areseeing;inwhichD．haveseen;where9—．Doyouknowanythingnewabouttheincident?—Aworkingparty________tolookintotheproblem.A．wassetupB．hasbeensetupC．hasbeensettingupD．issettingup10．Thelittleboyisluckyenoughtohaveescaped________todeathinthebigfire.A．burningB．tobeburnedC．beingburnedD．tohavebeenburned11．Theislandis________attractiveinspringandautumnbecauseofthepleasantweatherinbothseasons.A．partlyB．merelyC．nearlyD．equally12．YoucanneverimaginewhatgreattroubleIhad________thepoorboywhowashurtseriously.A．helpB．tohelpC．helpedD．helping13．Onlyaftertheyhaddiscussedthematterforafewhours________adecision.A．theyreachedB．didtheyreachC．theyreachD．dotheyreach14．________Imethim，hewasworkingasasecretaryinabigcompany.A．ForthefirsttimeB．ThefirsttimeC．ThefirsttimewhenD．Whenthefirsttime15．Shepretendedtobecalmbut________shewasmorethannervousatthetimeshewasbeingquestioned.A．inactualB．actuallyC．asmatteroffactD．inafactⅡ.阅读理解AInanidealworld,peoplewouldnottestmedicinesonanimals.Suchexperimentsarestressfulandsometimespainfulforanimals,andexpensiveandtimeconsumingforpeople.Yetanimalexperimentationisstillneededtohelpbridgevastgapsinmedicalknowledge.Thatiswhytherearesome50to100millionanimalsusedinresearcharoundtheworldeachyear.Europe,onthewhole,hastheworld'smostrestrictivelawsonanimalexperiments.Evenso,itsscientistsusesome12millionanimalsayear,mostofthemmiceandrats,formedicalresearch.Officialstatisticsshowthatjust1.1millionanimalsareusedinresearchinAmericaeachyear.Butthatismisleading.TheAmericanauthoritiesdonotthinkmiceandratsareworthcountingand,asthesearethemostcommonlaboratoryanimals,thetruefigureismuchhigher.JapanandChinahaveevenlesscomprehensivedatathanAmerica.NowEuropeisreformingtherulesgoverninganimalexperimentsbyrestrictingthenumberofanimalsusedinlabs.Alternativestoanimaltesting,suchasusinghumantissueorcomputermodels,arenowstronglyrecommended.Inaddition,sharingallresearchresultsfreelyshouldhelptoreducethenumberofanimalsforscientificuse.Atpresent,scientistsoftenshareonlytheresultsofsuccessfulexperiments.Iftheirfindingsdonotfitthehypothesisbeingtested,theworkneverseesth...
