新GRE阅读理解36套Exercise4解析.docx

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1、Exercise4Itisapopularmisconceptionthatnuclearfusion核聚变powerisfreeofradioactivity放射性;infact,thedeuterium-tritium氘和氚reactionthatnuclearscientistsarecurrentlyexploringwithsuchzealproducesbothalphaparticlesandneutrons.(Theneutronsareusedtoproducetritiumfromalithiumblanketsurroundingthereactor.)

2、D和T都会发出射线，阿尔法粒子和中子，中子来自于锂变成的TAnothercommonmisconceptionisthatnuclearfusionpowerisavirtuallyunlimitedsourceofenergybecauseoftheenormousquantityofdeuteriuminthesea.Actually,itslimitsaresetbytheamountofavailablelithium,whichisaboutasplentifulasuranium铀intheEarth‘scrust.Researchshouldcertainlyc

3、ontinueoncontrollednuclearfusion,butnoenergyprogramshouldbepremisedonitsexistenceuntilithasprovenpractical.(122words)1.Itcanbeinferredfromthepassagethattheauthorbelieveswhichofthefollowingaboutthecurrentstateofpublicawarenessconcerningnuclearfusionpower?(A)Thepublichasbeendeliberatelymisinf

4、ormedabouttheadvantagesanddisadvantagesofnuclearfusionpower.(B)Thepublicisunawareoftheprincipaladvantageofnuclearfusionovernuclearfissionasanenergysource.(C)Thepublic‘sawarenessofthescientificfactsconcerningnuclearfusionpowerissomewhatdistortedandincomplete.(D)Thepublicisnotinterestedinincr

5、easingitsawarenessoftheadvantagesanddisadvantagesofnuclearfusionpower.(E)Thepublicisawareofthedisadvantagesofnuclearfusionpowerbutnotofitsadvantages.Forthefollowingquestion,considereachofthechoicesseparatelyandselectallthatapply2.Thepassageprovidesinformationthatwouldanswerwhichofthefollowi

6、ngquestionsEXCEPT?□AHowmuchincidentalradiationisproducedinthedeuteriumtritiumfusionreaction?【howmuch，没说具体的量，自己为啥没选呢？可能看着看着就忘记是EXCEPT了】□BWhatislikelytobetheprincipalsourceofdeuteriumfornuclearfusionpower?□CWhyarescientistsexploringthedeuterium-tritiumfusionreactionwithsuchzeal?RogerRosenblat

7、t‘sbookBlackFiction,inattemptingtoapplyliteraryratherthansociopoliticalcriteriatoitssubject,successfullyalterstheapproachtakenbymostpreviousstudies.【ratherthan表明是用literary，successfully表明作者支持】AsRosenblattnotes,criticismofBlackwritinghasoftenservedasaprete