新视野大学英语视听说3_Reading Comprehension 2

《新视野大学英语视听说3_Reading Comprehension 2》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、Part1ReadingComprehension(MultipleChoice)(每小题：1分)Directions:ReadthefollowingpassagescarefullyandchoosethebestanswerfromthefourchoicesmarkedA,B,CandD.Questions1to5arebasedonthesamepassageordialog.Astrictvegetarianisapersonwhoneverinhislifeeatsanythingderivedfromanimals.Themainobjectiontovegetar

2、ianism(素食主义)onalong-termbasisisthedifficultyofgettingenoughprotein—thebody-buildingelementinfood.Ifyouhaveeverbeenwithoutmeatorotheranimalfoodsforsomedaysorweeks(say,forreligiousreasons)youwillhavenoticedthatyoutendtogetratherweakphysically.Youaregladwhenthefast(禁食)isoverandyougetyourrewardofa

3、deliciousmeatmeal.Proteinsarebuiltupfromabouttwentyfoodelementscalled"aminoacids"(氨基酸),whicharefoundingreateramountsinanimalproteinthaninvegetableprotein.Thismeansyouhavetoeatagreatdealmorevegetablethananimalfoodinordertogetenoughoftheseaminoacids.Agreatdealofthevegetablefoodgoestowasteinthisp

4、rocessandfromthephysiological(生理学的)pointofviewthereisnotmuchtobesaidinfavoroflife-longvegetarianism.Theeconomicsideofthequestion,though,mustbeconsidered.Vegetablefoodismuchcheaperthananimalfood.However,sinceonlyasmallproportionofthevegetableproteinisusefulforbody-buildingpurposes,aconsistentve

5、getarian,ifheistogainthenecessary70grams(克)ofproteinaday,hastoconsumeagreaterbulkoffoodthanhisdigestiveorganscancomfortablydealwith.Infairness,though,itmustbepointedoutthatvegetariansclaimtheyneedfarlessthan70gramsofproteinaday.CBDBC1.Astrictvegetarian________.A.rarelyeatsanimalproductsB.somet

6、imeseatseggsC.nevereatsanyanimalproductsD.nevereatsprotein2.Wefeelweakwhenwegowithoutmeatandotheranimalproducts_____.A.becausewearereducingourfoodamountB.becausewedonotgetenoughproteinC.becausevegetablesdonotcontainproteinD.unlesswetakeplentyofexercise3.Proteinsarebuiltupfrom________.A.abouttw

7、entydifferentfoodsB.abouttwentydifferentvegetablesC.variousfatsandsugarsD.abouttwentydifferentaminoacids4.Physiologically,life-longvegetarianismmaynotbegoodbecause______.A.itmakespeopleverythinB.thebodymustprocesstoomuchwasteC.thefarmer