单项选择题
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A.They have a great effect on everyone’s intelligence.
B.They have some effect on many people’s intelligence.
C.They have some effect on a few people’s intelligence.
D.They have no effect on most people’s intelligence.
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单项选择题
A.A science fiction cartoon.B.A scientific program.C.A movie on personality disorders.D.A drama set in New York city.
A.A science fiction cartoon.
B.A scientific program.
C.A movie on personality disorders.
D.A drama set in New York city.
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单项选择题
A.Because their value has been raised since they were made.B.Because they contain more silver than they used to.C.Because they contain less silver than they should do.D.Because the metal wears down in use.
A.Because their value has been raised since they were made.
B.Because they contain more silver than they used to.
C.Because they contain less silver than they should do.
D.Because the metal wears down in use.
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