17.Heaskedme()Englishculture.A.aboutB.ofC.forD.on满分:2分18.–Areyousureaboutthat?–().A.Youneedn'tworryaboutthatB.IliketheideaC.Oh,no.I'mafraidofthatD.Oh,yes.I'mabsolutelypositive满分:2分19.–ThelecturegivenbyprofessorSmithwasreallyinteresting.–().A.Icouldn'tagreewithyoumoreB.I'mgoingtolistentoitC.ItsoundsreasonableD.Itdidn'tlasttoolong满分:2分20.Hegoestoschoolbybike,andthe()takeshalfanhour.A.travelB.journeyC.voyageD.trip满分:2分21.()Igotafirst,I'dstayinuniversityandI'ddoapostgraduateresearchdegree.A.AsB.SinceC.WhenD.If满分:2分