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Learning strategies include：

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The nature of the curriculumincludes ____ and _.

The overall aims for English language teaching in Chinaare designed to __________________________________。

The overall language ability required in the 2001 national English curriculum includes the following aspects:

下列关于Collections类的描述中,哪些是正确的( )

A. 专门用于操作集合的类
B. 操作集合的方法都是静态方法
Collections类不实现Collectoin接口
D. Collections类没有构造方法