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关注：1
2013-05-23 12:21
求翻译：Such measures have had no demonstrable impact on improving the performance of students. And mixing in disruptive, low-performing students with high achievers has minimal positive effect on the low achievers but usually creates a less friendly environment for the better students.是什么意思？ 待解决
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- 离问题结束还有
Such measures have had no demonstrable impact on improving the performance of students. And mixing in disruptive, low-performing students with high achievers has minimal positive effect on the low achievers but usually creates a less friendly environment for the better students.
问题补充： |
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