1.Geographersexaminetinyfragmentsofanimalsandplantsfoundinsedimenttodatethestratum.
(A)families(B)skeletons(C)pieces
2.Janet’sgoalistobecomeasuccessfulbusinesswomansoshespendsallhermoneyonMBAstudy.
(A)competition(B)objective(C)subject
3.ThelargetowersoftheGeorgeWashingtonBridgewerenotencasedinmasonry(砖瓦)butwereleftexposedtorevealtheirhandsomesteelstructure.
(A)naked(B)well-worn(C)good-looking
4.Corn,potatoes,andotherplantsfirstcultivatedintheWesternHemispherenowfurnishalmosthalftheworld'sfoodsupply.
(A)replace(B)provide(C)consume