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说明理由difficultexplorationsare,humanshaveneverstoppedmovingforward.A.WhileB.DespiteC.AsD.However一Doyoubringthepicture?一Yes,Iitforawholemorning.A.lookedforB.havelookedforC.havebeenlookingfor

题目详情
说明理由
______ difficult explorations are,humans have never stopped moving forward.
A.While   B.Despite    C.As  D.However
一Do you bring the picture?
一Yes,I _____ it for a whole morning.
A.looked for   B.have looked for   C.have been looking for   D.had looked for
▼优质解答
答案和解析
D,however=no matter how,无论如何.
D,表过去完成,“找了一早晨”.