問題詳情

【題組】39. Eventually, rabbits became immune____ the virus. They are ____ control for now.
(A) for ; against
(B) on ; without
(C) to ; under
(D) on ; out of

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)