問題詳情

31 Conducting a _________ experiment seems to be trekking on an uncharted territory, since nobody has done it before.
(A) digital
(B) fatal
(C) pilot
(D) sturdy

參考答案

答案:C
難度:困難0.315113
統計:A(45),B(63),C(98),D(56),E(0)

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