单项选择题

A．Energy conservation.
B．A new kind of transportation.
C．Strip cities.
D．Advantages o air transportation over rail roads.
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单项选择题
A．She felt proud.B．She felt satisfied.C．She felt delighted.D．She felt surprised.
A．She felt proud.
B．She felt satisfied.
C．She felt delighted.
D．She felt surprised.
单项选择题
A．He is very quiet.B．He gives amusing lectures.C．He should give more than one series of talks.D．He lectures only to the serious students.
A．He is very quiet.
B．He gives amusing lectures.
C．He should give more than one series of talks.
D．He lectures only to the serious students.
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