单项选择题

A．They brought in bald eagles from Canada.
B．They explored new ways to hatch baby bald eagles.
C．They developed new types of feed for baby bald eagles.
D．They found ways to speed up the reproduction of bald eagles.
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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．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.
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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