单项选择题

Where shall the woman get off

A．The place next to the Theatre.
B．A stop at the Theatre.
C．At the comer of the Theatre.
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单项选择题
According to the text, why are test flights most dangerous
A．The plane may explode in the air.
B．The pilot may lose control of the plane.
C．The engines may be damaged.
D．Too much air may get into the plane.
单项选择题
By doing the tank test , the engineers can find out ______.
A．the amount of air in the plane
B．the strength of the plane structure
C．the pressure inside and outside the plane
D．the power of the airplane engines
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