单项选择题

A．optimistic about
B．pessimistic about
C．not enthusiastic about
D．devoted to
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单项选择题
A．nothing technicalB．electricity is too expensiveC．the speed of the car is not fast enoughD．the weight of the battery
A．nothing technical
B．electricity is too expensive
C．the speed of the car is not fast enough
D．the weight of the battery
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