题目内容

He made another wonderful discovery, ______ of great importance to science.

A. which I think is B. which I think it is  C. which I think it    D. I think is

A


解析:

选项中的 I think 是插入语,若略去不看便可清楚地看出答案。

练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网