問題詳情

15. Recently, several countries in the world have suffered an ____________ series of natural disasters, causing a largeamount of loss and deaths. It is a situation that never happened before.
(A) indispensable
(B) intangible
(C) underlying
(D) unprecedented

參考答案

答案:D
難度:簡單0.772727
統計:A(1),B(1),C(0),D(17),E(0)

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