Why does the author mention the discovery of air pressure? From the passage we know that ______.

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问题 Why does the author mention the discovery of air pressure?
From the passage we know that ______.

选项 A、it was Galileo that formed the hypothesis of air pressure
B、Torricelli was confused by the problem of the water-pump
C、Pascal’s experiment further proved the air-pressure hypothesis
D、the weight of mercury column influenced air pressure

答案C

解析

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大学英语四级

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