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

According to the passage, French production ______.

A．was inadequate to meet the needs of the French people
B．was flooding the international market with inferior products
C．emphasized industrial production at the expense of agricultural production
D．was enough for the local market

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