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Which of the groups have a higher percentage of over-weight people according to one study?


Which of the groups have a higher percentage of over-weight people according to one study?

A.The low-income groups.

B.The high-income groups.

C.The mid-income groups.

D.Not mentioned.

请帮忙给出正确答案和分析,谢谢!

参考答案
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