英语期末考试第一部分阅读理解（共两节，满分30分）ADodogsunderstandus?Becarefulwhatyousayaroundyourdog.Itmightunderstandmorethanyouthink.AbordercollienamedRicorecognizesthenamesofabout200objects,sayresearchersinGermany.Thedogalsoappearstobeabletolearnnewwordsaseasilyasa3-year-oldchild.Itsword-learningskillsareasgoodasthoseofaparrotorchimpanzee(黑猩猩).Inoneexperiment,theresearcherstookall200itemsthatRicoissupposedtoknowanddividedtheminto20groupsof10objects.Thentheownertoldthedogtogoandfetchoneoftheitemsandbringitback.Infourtests,Ricogot37outof40commandsright.Asthedogcouldn'tseeanyonetogetclues,thescientistsbelieveRicomustunderstandthemeaningsofcertainwords.Inanotherexperiment,thescientiststookonetoythatRicohadneverseenbeforeandputitinaroomwithseventoyswhosenamesthedogalreadyknew.TheownerthentoldRicotofetchtheobject,usingawordthedoghadneverheardbefore.Thecorrectobjectwaschoseninsevenoutofl0tests,suggestingthatthedoghadworkedouttheanswerbyprocessofelimination(排除法).Amonthlater,Ricorememberedhalfofthenewnames,whichisevenmoreimpressive.Ricoisthoughttobesmarterthantheaveragedog.Foronething,Ricoisabordercollie,abreed(品种)knownforitsmentalabilities.Inaddition,the9-year-olddoghasbeentrainedtofetchtoysbytheirnamessincetheageofninemonths.It'shardtoknowifalldogsunderstandatleastsomeofthewordswesay.Eveniftheydo,theycan'ttalkback.Still,itwouldn'thurttosweet-talkyourdogeverynowandthen.Youmightjustgetabig,wetkissinreturn!1.Fromparagraph2weknowthat__.A.animalsareascleverashumanbeingsB.dogsaresmarterthanparrotsandchimpanzeesC.chimpanzeeshaveverygoodword-learningskillsD.dogshavesimilar'learningabilitiesas3-year-oldchildren2.Bothexperimentsshowthat.A.RicoissmartenoughtogetallcommandsrightB.RicocanrecognizedifferentthingsincludingtoysC.RicohasdevelopedtheabilityoflearningmathematicsD.Ricowon'tforgetthenamesofobjectsoncerecognizingthem3.Whatdoesthewriterwanttotellus?A.Totrainyourdog.B.Totalktoyourdog.C.Tobefriendlytoyourdog.D.Tobecarefulwithyourdog.BWhenfamiliesgatherforChristmasdinner,somew