Manypeopleliketokeepdogsastheirpets.Butdoyouknowdogswerewild（野生的）animalslonglongago?(1)wilddogsweretrainedby(2)inEuropeabout10000yearsago.ThesefirstThe“

　　Manypeopleliketokeepdogsastheirpets.Butdoyouknowdogswerewild（野生的）animalslonglongago?

　　(1)wilddogsweretrainedby(2)inEuropeabout10000yearsago.ThesefirstThe“dogs”werenotlike(3)wehavenow.Theymayhavebeensmallwolves.Thesedogsoftencamenearhumansto(4)somefood.Someoftheyoungdogswereadopted（收养）bypeopleandgrewupwiththem.

　　(5)wereahelptotheminmanyways.ThedogshelpedthemtohuntHumansbelievedthe（守猪）.Theycouldsmellandheardanger(6)peoplecould.Theyhelpedkeeppeople(7)oncoldnights.Soitwas(8)toraisethedogs.

　　Nowtherearemanydifferentkindsofdogs(9)theymaylookquitedifferentfromeachother.Dogtrainersthinktherearemorethan400differentkindsintheworld.Thenumberkeepsincreasingwithnewkinds.

　　Sincethoseearlydayshumansanddogshavealwaysbeentogether.Weshould(10)themfromnowonbecausetheyarereallyourfriends.

　　(1)A．first

　　B．late

　　C．last

　　D．whole

　　(2)A．wolves

　　B．cats

　　C．humans

　　D．students

　　(3)A．where

　　B．what

　　C．when

　　D．which

　　(4)A．steal

　　B．waste

　　C．make

　　D．serve

　　(5)A．steal

　　B．foxes

　　C．wolves

　　D．dogs

　　(6)A．when