几道英语单选题1．Wetrytopointoutthatnomatterofstageoflifeyoumaybein----young,middle-agedorretired-------there’s___possibilityofa_____constantlyexpandingfieldofinterest,excitement,challenge,fulfillmentandadventure.A

　　几道英语单选题

　　1．Wetrytopointoutthatnomatterofstageoflifeyoumaybein----young,middle-agedorretired-------there’s___possibilityofa_____constantlyexpandingfieldofinterest,excitement,challenge,fulfillmentandadventure.

　　A.aaB.thetheC.theaD.athe

　　C为什么选

　　2．Identifyingsimilarwords,linguistshave______whattheycallanIndo-Europeanparentlanguage,spokenuntil3500to2000B.C.

　　A.madeupforB.broughtbacktoC.gotdowntoD.comeupwith

　　3．NASA’sMarsprogramwassetbackwhenthetwospacecraftsfailedupreachingMars,one_____upintheplanet’satmosphereandtheother____afterasoftwarefailure.

　　A.burned,disappearedB.toburn,disappearingC.burning,disappearingD.burning,disappeared

　　为什么?

　　4.ImmediatelyIheardtheterriblenews,mymindwent____,notknowingwhattodo.

　　A.emptyB.blankC.emptyandwhiteD.hollow

　　5．---Areyouavisitorhere

　　---That’sright.I____roundtheworldandnowmydreamofcomingtochina___true.

　　travelinghascome

　　第二个空为什么用完成时表达?