单项选择题

Questions 11 to 18 are based on the passage you have just heard.

A．How lucky you are!
B．You are not lucky.
C．You are lucky.
D．You’re lucky, aren’t you
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单项选择题
A．The rocket should be inexpensive to construct.B．The rocket is capable of lifting heavy spacecraft into orbit.C．The rocket should be easily controlled.D．The rocket should be inexpensive to operate.
A．The rocket should be inexpensive to construct.
B．The rocket is capable of lifting heavy spacecraft into orbit.
C．The rocket should be easily controlled.
D．The rocket should be inexpensive to operate.
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