单项选择题

A．The pieces would be concentrated in one area.
B．The Skylab would not completely bum before reentry.
C．There could be considerable property damage.
D．Some 400 to’500 pieces survive reentry.
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单项选择题
A．Closer to the people.B．Father away from the people.C．Between the people.D．Behind them.
A．Closer to the people.
B．Father away from the people.
C．Between the people.
D．Behind them.
单项选择题
A．Her car was damaged.B．She almost collided with a school bus.C．The speed was too fast.D．She couldn’t stop the bus.
A．Her car was damaged.
B．She almost collided with a school bus.
C．The speed was too fast.
D．She couldn’t stop the bus.
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