单项选择题

According to the conversation, the use of fossil fuels ______.

A．should be banned in order to save energy
B．brings some side effects
C．causes the earth’s temperature rise
D．should not be blamed for the pollution of environment
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单项选择题
The second concern seems to be contradictory to the first one in that it argues
A．that women should assume their proper roles as housewives
B．that women should commit no sin against their husbands and the society
C．from the premise that women are the weaker sex to be protected
D．that government policies should be made favorable to women’s liberation
单项选择题
The information superhighway came into existence because of ______.
A．copper wire cables
B．satellite communication
C．optical fibers
D．laser and optical fibers
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