判断题

工人的技术水平提高，使得劳动生产率提高。这种关系是一种不完全的正相关关系。

答案：错误

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多项选择题

About speaking rate, what statements are true? A. The normal rate of speech for native English speakers is between 120 and 150 words per minute. B. The best public speaking rate is around 120 words per minutes. C. A speaker should maintain a constant speaking rate. D. Being alert to the audience’s reactions is the best way to know whether your rate of speech is too fast or too slow.

不定项选择

‍根据下列已知数据，可以判断反应向右进行完全‌
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