英语泛读教程4课后答案

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1、Unit1ExerciseA.dB.ccbdcbbaC.1.Theanswerisyes.Butthequestionisopentodiscussion.Impulsecannotstaylongwithoutcarefulthinking.Writingisalsoanartandartiscultivated2.Awriterneedscreativepowerinproducinggoodstories.Hehastomake painstakingeffortsinwriting.Creativep

2、owerneedscultivationandgeniusalonemaynotworkin creatingoriginalstories.3.Inmostcasesagoodstoryisrewritten.Buttherearewriterswhothinkverycarefullyaboutthestorytobewrittenbeforetheystartwriting.Carefulthinkingandrewritingareofthesamenaturehere.D.abcdbddbaaFas

3、treadingUnit2ExerciseA.aB.bbcbdbabacC.1.Theauthor'shypothesisisbasedonthefollowingfacts:thegrowthrateoftheworldpopulationisnowonlyonepercentayear;44percentoftheworld'speopleliveincountrieswherefertilityhasalreadyfallenbelowthereplacementrate,andfertilityisf

4、allingalmosteverywhereelse.Thereasonisthatpopulationchangesdependonthevaluespeoplehold.Aslongasthemodernvalueofsavingeffortsandmoneybyraisingfewerchildrenremainswidespread,theworldpopulationwillnotstopdeclining.(Oftheseviews,youmayhaveyourownjudgment,discus

5、swithyourpartners.)2.Theauthorsuggeststhathumanvaluesisoneofthedeterminingfactorsofpopulationfluctuation.Modernwayoflifehasledtothedeclinationinpopulationinthemodernizedcounties,andwhethertheworldpopulationwillgrowordwindledependsonthevaluespeopleholdinthef

6、uture.Youmayagree,partlyagreeordisagreetotheauthor'sview.Stillyoumayalsoputforwardnewviewsregardingtherelationbetweenhumanvaluesandpopulation.D.baaabacdcFastreadingPassageone1-5acdabPassagetwo6-10caddbpassagethree1-15dccdbUnit3ExerciseA．aB．babcdbabbC．1.Gene

7、ticallymodifiedfoodismadefromcropsandvegetablesgeneticallychangedbyscientists.GMfoodhasarousedgreatdissentionsamonggovernments,scientists,farmers,andconsumers.Ononehandarethehighqualitycropsduetothegenetechnique,ontheotherhandarethepotentialrisks.（Whilegivi

8、ngyourideas,considertheinterestsofdifferentpeoples.）3.Fromthetext wecanseethatthefoodfightbetweentheU.S.andtheE.U.comesasmuchfromtheconcernfortheirowninterestsasfromsafetyconsiderations.WhiletheE.U.ban