高二同步备课资料：Unit5Firstaid单元自测（新人教版必修5）

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1、Unit5Firstaid三、单元自测1•完形填空阅读下面短文，掌握其大意，然后从21—30各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。词数：221完成时间：14分钟难度：***AccordingtotheWorldHealthOrganization,malaria（疟疾），adiseasespreadbymosquitoes,affectsmillionsofpeopleeveryyear.Everyoneknowshowannoyingthe21madebyamosquito,followedbyapainfulreactiontoitsbite,canbe.It

2、is22thatsolittleisknownaboutmosquitoes,giventhelevelofpainand23causedbytheseinsects・Weknowthatthemost24chemicalforprotectingpeopleagainstmosquitoesisdiethyltoluamide,commonlyshortenedtodeet.Thoughdeetworkswell,ithassomeserious25:itcandamageclothesandsomepeopleareallergictoit.Scientistsknowthatmosqui

3、toesfindsomepeoplemoreattractivethanothers,buttheydonotknowwhy.Theyalsoknowthatpeople26intheirreactionstomosquitobites.Onepersonhasapainfulswellingwhileanotherwhoisbittenbythesamemosquito,mayhardlynotice・Scientistshavenotyetdiscoveredthereasonforthis,buttheyhave27experimentstoshowthatmosquitoesareat

4、tractedto,orputoffby,certainsmells.28,scientistswillbeabletodevelopasmellthatmosquitoescannot29inthefuture.Thiscouldbeplacedinanetto30mosquitoesthatflyin.Forthetimebeinghowever,wehavetocontinuesprayingourselveswithunpleasantliquidsifwewanttoavoidgettingbitten・21.A.voiceB.noiseC.songD.cry22.A.astonis

5、hingB.commonC.impossibleD.boring23.A.diseasesB.guiltyC.sorrowD.panic24.A.expensiveB.effortlessC.effectiveD.limited25.A.chemicalsB・illnessC.reactionsD.drawbacks26.A.putB.takeC.varyD.balance27.A.passedoutB.takenoutC-carriedoutD.putout28.A.ThankfullyB.HopefullyC.LuckilyD.Obviously29.A.resistB.findC.wai

6、tD.escape30.A.boxB・placeC.findD.trap［答案解析］21.B名词辨析。noise和voice都可以指声音，但前者指的是人们不愿听到的“噪声"；voice则指说话和唱歌的''噪音"。由语境可知蚊子的声音应属于前者。22.A形容词辨析。前文提到t4adiseasespreadbymosquitoes,affectsmillionsofpeopleeveryyear"。故选astonishing令人惊讶的。句意为:考虑到由这些昆虫引起的痛疼和疾病.我们对于蚊子的了解却少得令人吃惊。il作形式主语，真正的主语是后that引导的从句。common普遍的；impossibl

7、e不可能的；boring令人烦恼的。23.A名词辨析。文章开篇就告诉我们蚊子传播疾病的严重性(affectsmillionsofpeopleeveryyear)o其他各项sorrow(悲痛)、panic(惊慌)都不符合语境。24.C形容词辨析。这里讲的是防止蚊子叮咬的药物，其效果很好(workswell),所以应是最有效的(effective)oexpensive昂贵的；effortless不费力