2016年北京成人学位英语考试题答案

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1、2016年北京成人学位英语考试

2、答案+80136728==PartIIReadingComprehension(40points)Directions:Thereare4passagesinthispart.Eachpassageisfollowedby5questionsorunfinishedstatements.Foreachofthemthereare4choicesmarkedA,B,CandD.ChoosethebestoneandmarkyouranswerontheANSWERSHEETwithasinglebarthroughthecentero

3、ftheletter.PassageOneHere'safamiliarstory.You'resittingatthedinnertablewithafurry,four-leggedfriendscratchingatyourfeet.Whenyoulookdown,thosecuteeyesarealmostimpossibletoresist.Whatisitaboutadog'sgazethatmakesitsocharming?AnewstudybyJapanesescientistMihoNagasawaseemstohavefoundtheansw

4、er,andithastodowithsomethingcalledthecuddle（爱抚）chemical.Thecuddlechemicalhasanother,morescientificname:oxytocin.Oxytocinisasubstanceinthebloodthatencouragesbonding.Levelsofoxytocinincrease,forexample,whenamotherfeedshernewbornbaby.AccordingtoNagasawa'sstudy,thesameistruewhenwelookdeep

5、lyintotheeyesofadog.Theresultsofthisstudycantellusalotaboutthehistoryofthebondbetweenhumansanddogs.Itallstartedsomewheretensofthousandsofyearsago.Scientistsbelievethatwolvesusedtofollowhumanswhowerehuntinglargeanimals.Thewolveswouldeatthefoodleftbehindbythehumans.Humansrealizedthatthe

6、ycouldusethewolvestohelpwiththehunt,andeventuallybothspeciesbegantoworktogethertowardsurvival.Overtime,thewolvesthatinteractedwiththehumansbegantochange.Theybecamemoreloyaltotheirhumanpartners.Thewolvesandhumansstartedtodependoneachotherandbondwitheachother.Thesechangesarewhatcausedso

7、meofthewolvestoturnintowhatwenowknowasdogs,anewspecie^evolvedtobettersurviveintheirenvironment.Thisprocessdependedagreatdealonthebondhumansformedwiththem.AndaccordingtoNagasawa'sstudy,thisbondwasformedwiththehelpofoxytocin,thecuddlechemical.11.Whatdoweknowaboutoxytocin?A.Itregulatesbl

8、oodflow.B.Itpromotesbonding.C.Itisinthehumangene.D.Itisgoodforhealth.12.Whenwelookdeeplyintoadog'seyes，thelevelsofouroxytocinA.reduceovertimeB.goeitherupordownC.areontheriseD.remainunchanged13.Atthebeginningwolvesfollowedhumansto.A.eatthefoodleftbyhumansB.guardagainstlargeanimalsC.tak

9、ehuma