单项选择题

Questions 28 to 30 are based on the passage you have just heard.

A．The development of balloons.
B．The weather balloons.
C．The history of human being flying.
D．Balloons for recreation.
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单项选择题
A．She wanted to move to New York.B．Her husband had lost his job.C．Her husband had got a higher position.D．She wanted to have a wider house.
A．She wanted to move to New York.
B．Her husband had lost his job.
C．Her husband had got a higher position.
D．She wanted to have a wider house.
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