問題詳情

【題組】17. Quinine, _______ used to cure malaria, was isolated from the bark of a cinchona.
(A) is a famous drug
(B) is a famous drug whose
(C) a famous drug
(D) it is a famous drug

參考答案

答案：C
難度：非常簡單0.923077
統計：A(1),B(1),C(24),D(0),E(0)