問題詳情

15. In 1939 the Ohio and Mississippi rivers overflowed _____ the worst flood everknown in the United States.
(A) the cause of
(B) which caused
(C) and caused
(D) they caused

參考答案

答案:C
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)

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