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单项选择题

A．The art of saying thank you.
B．The secret of staying pretty.
C．The importance of good manners.
D．The difference between elegance and good manners.
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热门试题

单项选择题A．A sick friend.B．A math class.C．School policy.D．The man’’s test.

A．A sick friend.
B．A math class.
C．School policy.
D．The man’’s test.

单项选择题A．It has too much interference.B．It produces no sound whatsoever.C．The sound is too low.D．The sound is completely distorted.

A．It has too much interference.
B．It produces no sound whatsoever.
C．The sound is too low.
D．The sound is completely distorted.