問題詳情

The scientist photographed a ___________ geographicalphenomenon.
(A) previous undetecting
(B) previous undetected
(C) previously undetecting
(D) previously undetected

參考答案

答案:D
難度:適中0.640091
統計:A(30),B(66),C(45),D(281),E(0)

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