单项选择题

The word "deduce" in the first paragraph is similar in meaning to ______.

A．refer to
B．reason out
C．insist on
D．point out

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单项选择题

The best title of the passage is ______.

A．The Methods of Science
B．How to Make Deductions
C．The Air Pressure Hypothesis
D．How to Form a Hypothesis

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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