各册教材内容按各自章节范围循序渐进，由简至繁，逐渐增加内容和扩大教学范围。

Each volume shall be carried out progressively according to respective unit, from simple to complicated one, the contents will be gradually increased and expanded with teaching scope.

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在我看来，汉字演变，由繁至简是一种必然，但并不意味着是那些所谓精英们的闭门造车。

In my opinion, the development of the characters from complex to simple is inevitable, but it does not mean that so-called elites make cars behind the closed door.

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第一、学习英语应该遵循由简入繁、由易到难、由粗至细的原则。

I. Learning English should follow the principle from simple to complex, from easy to difficult, and from rough to subtle.

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