单项选择题

According to the passage, acid rain is

A．a source of pollution.
B．an effect of industrialization.
C．an advantage of industrial society.
D．a deposition of fossil fuels.
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单项选择题
According to the author, which of the following statements is true
A．The Internet provides a lot of reading materials only.
B．The Internet defies the international boundaries.
C．The Internet will equalize the technical differences.
D．The Internet will affect our modem life by no means.
单项选择题
The writer of the passage is talking about the Internet mainly on the basis of
A．personal use.
B．corporate use.
C．business use.
D．technical use.
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