单项选择题

If Newton lived today, he would be surprise by what () in science and technology.

A. had discovered
B. had been discovered
C. has discovered
D. has been discovered

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单项选择题With the shining water before you and the wind, ______ trees behind you, you can not help ______.

单项选择题—Did your sister pass the exam —She failed and is in low spirits. —Im sorry for her. —().

A. Thank you
B. You're welcome
C. I would think so
D. Never mind