题目内容
The professor has written another book, ________ of great importance to computer science.
A. which I think it is B. I think it is
C. which I think is D. I think is
C
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题目内容
The professor has written another book, ________ of great importance to computer science.
A. which I think it is B. I think it is
C. which I think is D. I think is