单项选择题

A．Smoking can lengthen life expectancy.
B．Smoking can shorten life expectancy.
C．We haven’t found out yet.
D．There is no connection between smoking and life expectancy.
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单项选择题
A．He doesn’t think it is suitable for him.B．He is enthusiastic about it.C．He is unimpressed by what the woman told him.D．He doubts he can afford it.
A．He doesn’t think it is suitable for him.
B．He is enthusiastic about it.
C．He is unimpressed by what the woman told him.
D．He doubts he can afford it.
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