2022公共英语二级考试快速突破训练题

本文格式为Word版，下载可任意编辑——2022公共英语二级考试快速突破训练题Neverregretadayinyourlife.Gooddaysgiveyouhappinessandbaddaysgiveyouexperience.以下是我为大家探寻整理的2022公共英语二级考试快速突破训练题，梦想能给大家带来扶助!更多精彩内容请实时关注我们我!

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Thousandsofyearsagomanusedhandyrocksforhissurgicaloperations.Laterheusedsharpbonesorhorns,metalknivesandmorerecently,rubberandplastic.Inthe1960sanewtoolwasdeveloped,onewhichwas,firstofall,tobeofgreatpracticalusetothearmedforcesandindus-try,butwhichwasalsotorevolutionizetheartandscienceofsurgery.

Thetoolisthelaseranditisbeingusedbymoreandmoresurgeonsallovertheworld.Asweallknow,lightishot,andanysourceoflightwillgivewarmth.Butlightisusuallyspreadoutoverawidearea.Thelightinalaserbeam,however,isconcentrated.Thismeansthatalightwithnomorepowerthanthatproducedbyanordinaryelectriclightbulbbecomesintenselystrongasitisconcentratedtoapinpoint-sizedbeam.

Experimentswiththesepinpointbeamsshowedresearchersthatdifferentenergysourcespro-ducebeamsthathaveaparticulareffectoncertainlivingcells.Itisnowpossibleforeyesurgeonstooperateonthebackofhumaneyewithoutharmingthefrontoftheeye,simplybypassingalaserbeamrightthroughtheeye-ball.Operationswhichonceleftpatientsexhaustedandinneedoflongperiodofrecoverytimenowleavethemfeelingrelaxedandcomfortable.

Therapiddevelopmentoflasertechniquesinthepasttenyearshasmadeitclearthatthefutureislikelytobeveryexciting.Perhapssomecancerswillbetreatedwithlaserinawaythatmakessurgerynotonlysaferbutalsomoreeffective.

1.Whichofthefollowingwouldbeappropriatetodescribetheinstrumentsofsurgicalopera-tionsupuntil1960s?

A.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“以下哪个单词能够切当描述20世纪60年头以前的手术工具?”A选项的意为“传统的”;B选项意为“繁杂的”;C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.Whatdowefindafterthedevelopmentofthelaserinthe1960s?

A.Industrialrevolutionbroughtsurgerychangedgreatly.

B.Medicalhelpbecameavailableforindustrialworkers.

C.Thestudyofartwentthroughacompleterevolution.

D.Humanbeing'smethodsinsurgerychangedgreatly.

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年头激光取得进展后我们可以察觉什么?”根据原文第一段结果一句可知“激光为外科手术带来革命性的变化”，应选D。

3.Thereasonwhythelaserbeamisverystrongisthat_______

A.itisartificiallyilluminated

B.itismadeupofaconcentratedbeamoflight

C.itsendsoutheatinalldirections

D.itsheatisincreasedbytheheatofthesun

参考答案：B

参考解析：B事实细节题。题干的意思’是“为什么激光束的能量对比强?”根据原文其次段结果一句可知“能量被集中到一起而变得强大”。故答案为B。

4.Aftertheuseofthelaserbeam,surgeonscanperformoperationswhich

A.leavetheirpatientswithnegativeeffects

B.cantreatonlyhumaneyediseases

C.dolittledamagetotheirpatients

D.maketheirpatientsneedalongtimetorecover