4、fterahard17 inthelab,shegoeshome.18 sheplayswithhertoys.She19 enjoyswatchingtelevisionbeforegoingtobed.Scientistshopeto20 moreaboutpeoplebystudyingourclosestrelative-----thechimpanzee.1.A.foolish B. simple C.special D
5、.ordinary2.A.for B. on C.to D.by3.A.experience B.change C.develop D.become4.A.actions B.views C.messages D.feelings5.A.human B.si