The central idea of this passage is that______.A.student performance improves but at a hi

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The central idea of this passage is that______.

A.student performance improves, but at a high cost

B.it"s silly to improve achievement by extending school days

C.lengthening the school day is impossible at most schools

D.school time should be lengthened at any cost

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  • 正确答案:A
    文章作者承认延长学生上课时间有种种好处,只要学校有钱,不妨采取这种策略使师生受益,但问题是学校并不是“不差钱”,额外的支出从哪解决?言外之意是代价不小。