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题目材料：
For the respondents who rated their degree of confidence in state government high or moderate, the ratio of the number who gave a rating of high to the number who gave a rating of moderate was $$1$$ to $$3$$. How many of the respondents rated their degree of confidence in state government high?
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A.540
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B.570
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C.620
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D.680
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E.720
A显示答案
