单项选择题

Passage Two

A. They became more popular.
B. They were more regulated."
C. They became better produced.
D. They became less honest,

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单项选择题

单项选择题

A. Americans vow to change it.B. It is not as bad as it used to be.C. Americans know how bad it is to their health.D. Americans do not want to give up more sleep.

A. Americans vow to change it.
B. It is not as bad as it used to be.
C. Americans know how bad it is to their health.
D. Americans do not want to give up more sleep.

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