单项选择题
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A.Fifteen cigarette fighters.
B.Fifty cigarette lighters.
C.Sixty lipsticks.
D.An identity card.
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单项选择题
A.One; Two; OneB.Two; One; One.C.One; One; Two.D.Two; One;Two.
A.One; Two; One
B.Two; One; One.
C.One; One; Two.
D.Two; One;Two.
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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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