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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单项选择题
Rene Coty and Charles Deschanel were both interested in ______.
A．better quality in production
B．increasing quantity in production
C．having the government raise tariffs on foreign imports
D．eliminating unions in France
单项选择题
The word deduce in the first paragraph is similar in meaning to ______.
A．refer to
B．insist on
C．reason out
D．point out
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