scientific experiments can sometimes go wrong 阅读理解答案

《scientific experiments can sometimes go wrong 阅读理解答案》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。

1、Scientificexperimentscansometimesgowrong阅读理解答案　　Scientificexperimentscansometimesgowrongandwhentheydotheresultsmayrangefromthedisastroustothetroubling.OnesuchexperimenttookplaceinSouthAmericaaboutfiftyyearsago.Whetheritsfinalconsequenceswillcauseseriousdamag

2、eornothingmorethanasmalltroublestillremainstobeseen.　　Thestorybeganin1956whenanAmericanscientistworkinginBrazildecidedtosolvetheproblemofincreasingtheproductivityofthatcountry’sbees.HeimportedaveryactivetypeofAfricanbeefromTanzaniaandmated(交配)itwiththemoreea

3、sy-goingnativevarietytoproduceanewkindofbees.Thenewbeesworkedharderandproducedtwiceasmuchhoney.ItseemedthatProfessorKerr,forthatwasthescientist’sname,hadatotalsuccessonhishands.　　Thenthingsbegantogowrong.Forsomereasonasyetunseen,butperhapsasaresultofsomethin

4、gintheirenvironment,thenewbeesbegantodevelopextremelyattackingpersonalities.Theybecamebad-tempereda　　　　ndeasytobeangry,attackedthenativebeesanddrovethemfromtheirlivingplaces.　　Butworsewastofollow.Havingtakenoverthecountryside,thenewbees,withtheirdangeroussti

5、ngs(叮),begantoattackitsneighbors--cats,dogs,horses,chickensandfinallymanhimself.Alongperiodofterrorbeganthathassofarkilledagreatnumberofanimalsandabout150humanbeings.　　ThiswouldhavebeenbadenoughifthebeeshadstayedinBrazil.Butnowtheyareonthemove,headingnorthwa

6、rdsincountlessmillionstowardsCentralandNorthAmerica,andmovingatthealarmingspeedof200milesayear.Thecountriesthatlieintheirpatharenaturallyworriedbecauseitlooksasifnothingcanbedonetostopthem.　　32.TheresultsoftheSouthAmericanexperiment.　　A.havecausedaserioustro

7、ubleB.haveprovedtobewrong　　C.arehighlythoughto　　　　fD.arenotyetcertain　　33.Theexperimentmentionedinthispassagewasdesignedto.　　A.increasetheamountofhoneyinBrazil　　B.makeBrazilianbeesmoreeasy-going　　C.increasethenumberofbeesinBrazil　　D.makeAfricanbeeslessactive

8、　　34.Whichofthefollowingmaybethecauseofthenewbees’attackingpersonalities?　　A.Theirproductionofhoney.B.Theirhardwork.　　C.Theirlivingenvironment.D.Theirbadtemper.　　35.Thelastparagraphimpliesthat.