单项选择题

A．It’s useless.
B．It’s unnecessary.
C．It’s doubtful.
D．It’s helpful.
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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.
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.
单项选择题
A．She and the man are in different classes.B．She intended to lend the man her notes.C．She didn’t attend class today.D．She can’t find her notes either.
A．She and the man are in different classes.
B．She intended to lend the man her notes.
C．She didn’t attend class today.
D．She can’t find her notes either.
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