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
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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
Why does the author mention the discovery of air pressure
A．To show that air behaves like water in some aspects.
B．To illustrate the special sequence of procedures involved in the establishment of the working laws of science.
C．To indicate that it was difficult to use scientific methods to solve the problem of vacuum pump.
D．To show how scientists make experiments to test their deductions.
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