题目内容
If Newton lived today, he would be surprised by what ______ in science and technology.
A. had discovered B. had been discovered
C. has discovered D. has been discovered
D
解析:
略
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题目内容
If Newton lived today, he would be surprised by what ______ in science and technology.
A. had discovered B. had been discovered
C. has discovered D. has been discovered
D
略