Listen to songs prelude to you will find is mixed twitter. The tide voice, build is a natural atmosphere, and yet people but to this environment?

歌曲前奏仔细听你会发现是夹杂有鸟鸣。潮水的声音，营造的就是一种自然的气氛，然而人们却对这样的环境作了什么？

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However, by this time the tide was turning and many leading educators were questioning the effectiveness of mixed ability teaching.

BBC: Setting, streaming - how schools teach