問題詳情

17. It seems obvious, when looking at a map, that the easternpart of Brazil ______ connected to Africa long ago whenthe earth was forming.
(A) must be
(B) must have been
(C) should have been
(D) might be

參考答案

答案:B
難度:適中0.427861
統計:A(33),B(172),C(68),D(74),E(0)

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