2021届高三英语阅读专项拆分训练---段落大意类6.docx

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1、高三阅读专项拆分训练段落大意类【6】【1】Phonesignalsarerelayedbetweencelltowersandcellphonesviaradiowaves.Thisradiofrequency—orRF—radiationisatypeknownasnon-ionizing(非电离的).UnlikeX-rays,non-ionizingradiationdoesnotdepositenoughenergyintocellstoreleaseelectronsfromatomsormolecules,producingions.Soittendstob

2、efarlessharmfulthanionizingradiation,suchasX-rays.Butthatdoesnotmeanradiowavesmightnotcauseharm.Whatistheparagraphmainlyabout?A.Howphonesignalsaredelivered.B.Howcellphonesproduceradiation.C.Featuresofradiationfromcellphones.D.Differencesbetweenionizingandnon-ionizingradiation.【答案】C【解析】根

3、据这段内容尤其是non-ionizingradiationdoesnotdepositenoughenergyintocellstoreleaseelectronsfromatomsorinmolecules,producingions.Soittendstobefarlessharmfulthanionizingradiation...可知，本段主要讲的是手机辐射的特点，它是非电离的，其危害性远低于电离辐射。故选C。【2】Standingintheshowerwaitingforthewatertoheatupcouldbeathingofthepast,along

4、withallthewastedwater.Threeandahalfyearsago,LindyHoneychurch,athirty-year-oldAustralianfull-timemumlivingonafarmoutsideLaunceston,didn'tconsiderherselfaverygoodwatersaver.Neitherdidherpartnerwhooftencomplainedaboutitwithgoodreasons.Theirfarmhadtorelyontankwaterandsolarpower,whichmeantwa

5、terhadtobetruckedinifthetankwaterranoutinsummer."IlookedatwhereIcouldsavebecauseIcouldleadaneasierlifewithoutthecomplaint,"shesaid.Modelingherideaonacarthermostat(恒温器),Lindyusedherkids'magnetic(磁的)drawingboardtodesignadevicethatdivertsthecoldwaterbackdownthehotwaterpipe."Thefirstaimwhen

6、Istarteddesigningwastokeepitreallysmallandsimplewithouthavingtousepower.Iwantedtokeepitassomethingthateveryonecoulduse,"saidLindy.Whatdoesthesecondparagraphmainlyabout?A.Lindy'sunhappyfamilyB.Lindy'scomfortablefarmlifeC.ThefunctionofLindy'sinventionD.ThebackgroundtoLindy'sinvention【答案】D

7、【解析】主旨大意题。根据“Lindyusedherkids'magneticdrawingboardtodesignadevicethatdivertsthecoldwaterbackdownthehotwaterpipe”可知，本段主要介绍Lindy如何进行发明创造的，也就是介绍了发明的背景。故选D。【3】Weallknowthatcarsrequirefueltorun.Amajorityofcarsontheroadsrunonnon-renewableenergy.Theygenerallyusetwomajorenergyfuels:gas