单项选择题

A. He has had thirteen decayed teeth.
B. He doesn’t have a single decayed tooth.
C. He has fewer decayed teeth than other people of his age.
D. He never had a single tooth pulled out before he was fifty.
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单项选择题
A. It is being forced out of the entertainment industry.B. It should change its concept of operation.C. It should revolutionize its technology.D. It is a very good place to relax.
A. It is being forced out of the entertainment industry.
B. It should change its concept of operation.
C. It should revolutionize its technology.
D. It is a very good place to relax.
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