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．It’’s manufactured to be strong.B．It bends without breaking.C．Thatchers nail it down securely.D．The winds can pass through it easily.
A．It’’s manufactured to be strong.
B．It bends without breaking.
C．Thatchers nail it down securely.
D．The winds can pass through it easily.
单项选择题
A．To help him explain the information to his roommate.B．To help him write a paper.C．To prepare for a test.D．To tell her if the notes are accurate.
A．To help him explain the information to his roommate.
B．To help him write a paper.
C．To prepare for a test.
D．To tell her if the notes are accurate.
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