单项选择题

A．It is not as bad as it used to be.
B．Americans do not want to give up any more sleep.
C．Americans guarantee to change the sleeping habits.
D．Americans want to know just how bad it is to their health.
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单项选择题
A．To the library.B．To the movies.C．To a bookstore.D．To a travel bureau.
A．To the library.
B．To the movies.
C．To a bookstore.
D．To a travel bureau.
单项选择题
The author implies that poor people often consider the promise of revolutionaries to be ______.
A．false and treacherous
B．credible and inspiring
C．attractive but impractical
D．superficial and irrelevant
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