2020银行校园招聘考试：英语单选题（3）
He has made a discovery, ______ of great importance to the progress of science and technology.
A. of which I think it is
B. which I think is
C. which I think it is
D. I think which is
东吴教育参考答案解析
【答案】B。解析：考查非限制性定语从句。句意：他有了一项发现，在我看来，这一发现对科技进步具有十分重要的意义。分析从句可知，which在从句中作主语，所以不能再加it作主语，排除A、C；另外I think是插入语，不应该放在定语从句的开头，排除D。故答案选B。
