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ID:10233039
大小:42.75 KB
页数:5页
时间:2018-06-12
《新gre阅读理解36套exercise4解析》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、Exercise4Itisapopularmisconceptionthatnuclearfusion核聚变powerisfreeofradioactivity放射性;infact,thedeuterium-tritium氘和氚reactionthatnuclearscientistsarecurrentlyexploringwithsuchzealproducesbothalphaparticlesandneutrons.(Theneutronsareusedtoproducetritiumfromalithiumblank
2、etsurroundingthereactor.)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,whichisaboutasplentifulas
3、uranium铀intheEarth‘scrust.Researchshouldcertainlycontinueoncontrollednuclearfusion,butnoenergyprogramshouldbepremisedonitsexistenceuntilithasprovenpractical.(122words)1.Itcanbeinferredfromthepassagethattheauthorbelieveswhichofthefollowingaboutthecurrentstateofpublic
4、awarenessconcerningnuclearfusionpower?(A)Thepublichasbeendeliberatelymisinformedabouttheadvantagesanddisadvantagesofnuclearfusionpower.(B)Thepublicisunawareoftheprincipaladvantageofnuclearfusionovernuclearfissionasanenergysource.(C)Thepublic‘sawarenessofthescientifi
5、cfactsconcerningnuclearfusionpowerissomewhatdistortedandincomplete.(D)Thepublicisnotinterestedinincreasingitsawarenessoftheadvantagesanddisadvantagesofnuclearfusionpower.(E)Thepublicisawareofthedisadvantagesofnuclearfusionpowerbutnotofitsadvantages.Forthefollowingqu
6、estion,considereachofthechoicesseparatelyandselectallthatapply2.ThepassageprovidesinformationthatwouldanswerwhichofthefollowingquestionsEXCEPT?□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】□BWhati
7、slikelytobetheprincipalsourceofdeuteriumfornuclearfusionpower?□CWhyarescientistsexploringthedeuterium-tritiumfusionreactionwithsuchzeal?RogerRosenblatt‘sbookBlackFiction,inattemptingtoapplyliteraryratherthansociopoliticalcriteriatoitssubject,successfullyalterstheapp
8、roachtakenbymostpreviousstudies.【ratherthan表明是用literary,successfully表明作者支持】AsRosenblattnotes,criticismofBlackwritinghasoftenservedasaprete
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