题目内容
Years ago we didn’t know this, but recent science _______ that people who don’t sleep well soon get ill.
A. showed B. has shown C. will show D. is showing
B
解析:
句意:几年前,我们不知道这一点,但最近科学(研究)已经表明,睡眠不好的人很容易得病。
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题目内容
Years ago we didn’t know this, but recent science _______ that people who don’t sleep well soon get ill.
A. showed B. has shown C. will show D. is showing
B
句意:几年前,我们不知道这一点,但最近科学(研究)已经表明,睡眠不好的人很容易得病。