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某校参加“祖冲之杯”数学邀请赛的选手平均分数是75分，其中参赛男选手比女选手人数多80％，而女选手比男选手的平均分数高20％，则女选手的平均分是多少？（）

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It is such colleges, thriving but threatened, that I worry about. Low enrollment is not their chief problem. Even with full enrollments, they may go under. Efforts to save them, and preferably to keep them private, are a national necessity. (79) There is no basis. for arguing that private schools are bound to be better than public schools. There are plentiful examples to the contrary. Anyone can name state universities and colleges that rank as the finest in the nation and the world. It is now inevitable that public institutions will be dominant, and therefore diversity (多样性) is a national necessity. Diversity in the way we support schools tends to give us a healthy diversity in the forms of education. In ah imperfect society such as ours, uniformity of education throughout the nation could be dangerous, ha an imperfect society, diversity is a positive good. Eager supporters of public higher education know the importance of keeping private higher education healthy.
第6题：In the passage, the author asks the public to support_____ .

A. private higher education in general
B. public higher education in general
C. high-quality private universities and colleges
D. high-quality state universities and colleges

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With careful forward planning, this businessman is helping the company survive a difficult period.

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In the future robots will also

A. explore space．
B. entertain people．
C. move much faster．
D. do a11 of the housework．

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Which of the following is NOT true of the Japanese？

A. They live in a crowded country.
B. They have recycled all their waste.
C. They are very good at recycling.
D. They have to share their limited space with rubbish

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