問題詳情

226.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：簡單0.859649
統計：A(49),B(1),C(1),D(3),E(0)