問題詳情

20、( )In Darwin’s theory, the natural selection was considered the important factor ______ evolution.
(A)in spite of
(B)in the process of
(C)as a result of
(D)an the end of

參考答案

答案：B[無官方正解]
難度：非常困難0
統計：A(0),B(4),C(2),D(0),E(0)