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公共英语考试二级通关练习题及答案公共英语考试二级通关练习题及答案Understand yourselfin orderto betterunderstanding others.以下是我为大家搜寻整理的公共英语考试二级通关练习题及答案,期望能给大家带来帮忙!更多精彩内容请准时关注我们应届毕业生考试网!阅读下列短文,回答题目.Thousands ofyears agoman usedhandy rocksfor hissurgicaloperations.Later heused sharpbones orhorns,metal knives and morerecently,rubber andplastic.In the1960sanew toolwas developed,one whichwas,first of all,to beof greatpractical useto thearmedforces andindus-try,but whichwas alsoto revolutionizethe artandscience ofsurgery.The toolis the laser andit isbeing usedby moreand moresurgeonsall overthe world.As weall know,light ishot,and anysource oflightwill givewarmth.But lightis usuallyspread outover awidearea.The lightin a laser beam,however,is concentrated.This meansthata lightwith nomore powerthan thatproduced byan ordinaryelectriclight bulbbecomes intenselystrong asit isconcentrated toapinpoint-sized beam.Experiments withthese pinpointbeams showedresearchers thatdifferentenergy sourcespro-duce beamsthat havea particulareffecton certainliving cells.It isnow possiblefor eyesurgeons tooperateon theback ofhuman eyewithout harmingthe frontof theeye,simplyby passingalaser beam rightthrough theeye-ball.Operations whichonceleft patientsexhausted andin needof longperiod ofrecoverytime nowleave themfeeling relaxedand comfortable.The rapiddevelopment oflaser techniquesin thepast tenyearshas madeit clearthat thefuture islikely tobe veryexciting.Perhapssome cancerswill betreated withlaser ina waythat makessurgerynot onlysafer butalso moreeffective.
1.Which ofthe followingwould beappropriate todescribe theinstrumentsof surgicalopera-tions upuntil1960sA.Traditional.B.Complicated.C.Remarkable.D.Revolutionary.参考答案A参考解析答案及解析A事实细节题题干的意思是〃以下哪个单词能够准确描述20世纪60年月以前的手术工具A选项的意为〃传统的‘前选项意为〃简单的’式选项意为〃非凡的’;D选项意为〃革命的‘原文第一段提到几千年前人们用石头、牛角等做手术,由此可以推断出选项A是正确的
2.What dowe findafter thedevelopment ofthe laserin the1960sA.Industrial revolutionbrought surgery changed greatly.
8.Medical helpbecame availablefor industrialworkers.C.The studyof artwent througha completerevolution.D.Human beingsmethods insurgerychangedgreatly.参考答案D参考解析D事实细节题题干的意思是〃20世纪60年月激光取得进展后我们可以发觉什么?依据原文第一段最终一句可知〃激光为外科手术带来革命性的变化’,故选D
3.The reasonwhy thelaserbeamis verystrong isthatA.it isartificially illuminatedB.it ismade upofaconcentrated beamof lightC.it sendsout heatin alldirectionsD.its heatis increasedby theheat ofthe sun参考答案B参考解析事实细节题题干的意思是〃为什么激光束的能量比较B强依据原文其次段最终一句可知〃能量被集中到一起而变得强大故答案为B
4.After theuse ofthelaserbeam,surgeons canperform operationswhichA.leave theirpatients withnegative effectsB.can treatonly humaneye diseasesC.do littledamage totheir patientsD.make theirpatients needa longtime torecover参考答案c参考解析事实细节题题干的意思是〃使用激光束做手术时医生c可以文中第三段提到〃曾经一度让患者疲乏不堪,并且术后恢复时间漫长的手术现在让患者变得很轻松很舒适’,可以排解和由文中最终一A Do句〃或许一些癌症也能够用激光来治疗可知选项不正确选项意思为〃B C使患者受到很小的损害’所以正确答案为C文档内容到此结束,欢迎大家下载、修改、丰富并分享给更多有需要的人。