A) In the despair C) In despair
B) To despair D) To the despair

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

A．better quality in production
B．increasing quantity in production
C．having the government raise tariffs on foreign imports
D．eliminating unions in France