問題詳情

9.( )Scientists still have a long way to go before they can invent new drugs that are highly _____ in treating all kinds of cancers.
(A) effective
(B) gradual
(C) crisp
(D) stubborn

參考答案

答案:A
難度:適中0.652174
統計:A(15),B(3),C(1),D(2),E(0)

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