单项选择题

A．A new fuel for buses.
B．The causes of air pollution.
C．A way to improve fuel efficiency in buses.
D．Careers in environmental engineering.
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单项选择题
A．Tim will surely come to repair the walkman.B．Tim is very trustworthy.C．Tim cannot repair the walkman.D．Tim doesn’’t keep his word.
A．Tim will surely come to repair the walkman.
B．Tim is very trustworthy.
C．Tim cannot repair the walkman.
D．Tim doesn’’t keep his word.
单项选择题
A．The strength of its shipbuilding industry.B．The physical features of the river itself.C．The abundance of fruit, vegetables, and livestock.D．The similarity of climate to that in Europe.
A．The strength of its shipbuilding industry.
B．The physical features of the river itself.
C．The abundance of fruit, vegetables, and livestock.
D．The similarity of climate to that in Europe.
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