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1、Unit2Cloning李仕才一、阅读理解。Sometimes,youjustcan'thelpit.Maybeyou'rewatchingasadmovie,orthinkingaboutthefriendwhomovedaway.Nextthingyouknow,there'salumpinyourthroat,youreyesarewatering,andyouhavetearsrunningdownyourcheeks. AprofessorofpsychologyatTilburgUni
2、versity,intheNetherlands,hasstudiedcrying.AccordingtoVingerhoets,there'rethreetypesoftears.Basaltearsarethefirsttype.Theyactasaprotectivebarrierbetweentheeyeandtherestoftheworld.Nextarereflextears.Theywashyoureyescleanwhensomethinggetsinthem.Finally,the
3、re'reemotionaltears.“Thesearereleasedinresponsetoemotionalstates,”explainsVingerhoets. Scientistsbelievecryinghassomethingtodowithhowhumansdevelopedandlearnedtodependoneachother.“Humansareverycomplexsocialcreatures,”saysLaurenBylsma,aprofessorfromPitt
4、sburghUniversity,inPennsylvania.“Itseemsthattearscanmakethemgethelpandsupportfromothers.” Shesaysanotherreasonwhyweweepisthathumanshavethelongestdevelopmentalperiodofalmostanyanimal.Ittakesalongtimetogrowup. Vingerhoetsagrees.“Ithinkthatthereasonwhy
5、humansshed(流出)emotionaltearshastodowithourprolonged(延长的)childhood,”hesays.“That'sthetimewhenwe'restilldependentonadultsforlove,protectionandcare.Themajoradvantageoftearsisthatyoucantargetthemataspecificperson.” Vingerhoetssaysthisabilitycouldhavecomei
6、nhandyinprehistorictimes,whenhumanswerelivingamongdangerousanimals.Loudcryingcouldattractpredators(捕食者).Tearswereasaferwaytogetattention.“Inthiscase,it'sbettertousea silent signaltoaskforhelp,”hesays.VingerhoetsandBylsmadofrequentstudiestobetterundersta
7、ndwhyhumanscry.1.ThetearsmentionedinParagraph1shouldbelongto________.A.basaltearsB.reflextearsC.happytearsD.emotionaltears2.WhatisVingerhoets'attitudetotheeffectsoftears?A.Passive.B.Positive.C.Doubtful.D.Indifferent.3.Theunderlinedphraseof“asilentsignal
8、”probablyrefersto________.A.awrittenlanguageB.predatorsC.tearsD.loudcrying4.Whatisthebesttitleofthetext?A.TypesofTearsB.PreciousTearsC.SecretsofTearsD.OnTears参考答案：1.D;2.B;3.C;4.C解析：1.[推理判断题。根据第二段Finally,there'reemotionaltears.“Th
