单项选择题

A．It might increase airport capacity.
B．It might lower property values.
C．It might lead to effective modification of existing jet engines.
D．It might cause more transportation costs to and from airports.
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填空题
According to the passage, a winter midnight is most probably the time for ______.
单项选择题
A．It is a serious threat to its competitors.B．It is not powerful enough to affect the world market.C．The cars’ quality is good enough to have their own branding.D．None of the Chinese cars meet the standard in the US.
A．It is a serious threat to its competitors.
B．It is not powerful enough to affect the world market.
C．The cars’ quality is good enough to have their own branding.
D．None of the Chinese cars meet the standard in the US.
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