单项选择题

A) As in C) While
B) During D) For

A．As in
B．During
C．While
D．For
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单项选择题
A) In the despair C) In despair B) To despair D) To the despair
A．To despair
B．In the despair C) In despair
C．To the despair
单项选择题
From the passage we know that ______.
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
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