单项选择题


Passage Two
Questions 19 to 21 are based on the passage you have just heard.

A．How did both the Constitution and democracy become so workable and sustainable
B．How did both the Constitution and republic become so workable and sustainable
C．How did the system of democracy become so workable and sustainable
D．Not given.
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单项选择题
A．A space rocket can only be used once.B．The pilot can fly a space plane just like an ordinary plane.C．A space rocket travels much faster than a space plane.D．Both A and B.
A．A space rocket can only be used once.
B．The pilot can fly a space plane just like an ordinary plane.
C．A space rocket travels much faster than a space plane.
D．Both A and B.
单项选择题
A．Sometimes he can’t get incoming and outgoing calls and always gets a busy signal.B．When he receives a call, it always cuts off.C．When he makes calls, there are always noises.D．He always calls into wrong numbers.
A．Sometimes he can’t get incoming and outgoing calls and always gets a busy signal.
B．When he receives a call, it always cuts off.
C．When he makes calls, there are always noises.
D．He always calls into wrong numbers.
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