问题
选择题
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
答案
答案：D
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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
答案：D