he has made a discovery,_______ of great importance to the progress of science and technology.A.which I think is B.that I think is C.I think which is D.of which I think it is并且 分析一下其他选项!
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![he has made a discovery,_______ of great importance to the progress of science and technology.A.which I think is B.that I think is C.I think which is D.of which I think it is并且 分析一下其他选项!](/uploads/image/z/1951090-34-0.jpg?t=he+has+made+a+discovery%2C_______+of+great+importance+to+the+progress+of+science+and+technology.A.which+I+think+is+B.that+I+think+is+C.I+think+which+is+D.of+which+I+think+it+is%E5%B9%B6%E4%B8%94+%E5%88%86%E6%9E%90%E4%B8%80%E4%B8%8B%E5%85%B6%E4%BB%96%E9%80%89%E9%A1%B9%21)
he has made a discovery,_______ of great importance to the progress of science and technology.A.which I think is B.that I think is C.I think which is D.of which I think it is并且 分析一下其他选项!
he has made a discovery,_______ of great importance to the progress of science and technology.
A.which I think is B.that I think is C.I think which is D.of which I think it is
并且 分析一下其他选项!
he has made a discovery,_______ of great importance to the progress of science and technology.A.which I think is B.that I think is C.I think which is D.of which I think it is并且 分析一下其他选项!
A,因为这个是非限制性定语从句,那么引导词肯定要放在前面了,所以肯定是which在前,排除C,而且非限制性定语从句,引导词不能用that,排除B,然后就看A和D,这个定语从句的先行词是discovery,放到从句里就是I think the discovery is of great importance,根本不需要有it,所以选A,这个句子的意思是他的发明对科学技术的进步很重要.