单选题
He has made another wonderful discovery, ______ of great importance to science.
A、
which I think it is
B、
of which I think it is
C、
I think which is
D、
which I think is
【正确答案】
D
【答案解析】
[解析] 本题测试的是非限制性定语从句。“I think”是插入语；“which”是引导非限制性定语从句的关联词；of importance＝important。综上所述，D为正确答案。
提交答案
关闭