单项选择题

A．280 pounds per square inch.
B．40.7 pounds per square inch.
C．47 pounds per square inch.
D．14.7 pounds per square inch.
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单项选择题
A．Because his company is too small.B．Because his company is in a mess.C．Because his company is developing rapidly.D．Because his company is in bad need.
A．Because his company is too small.
B．Because his company is in a mess.
C．Because his company is developing rapidly.
D．Because his company is in bad need.
填空题
We learn from the beginning of the passage that Web business has been striving to expand its______.
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