单项选择题

A．Her car is being repaired.
B．She wants to help reduce pollution.
C．Parking is difficult in the city.
D．The cost of fuel has increased.
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单项选择题
Several tourism companies believe space travel is going to be a new profitable industry.
A．Y
B．N
C．NG
单项选择题
A．8. 5 hours.B．7. 5 hours.C．8 hours.D．9 hours.
A．8. 5 hours.
B．7. 5 hours.
C．8 hours.
D．9 hours.
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