本实用新型的伸缩式黑板刷可以自由调节刷体的高度，对于小学生在擦位于黑板较高部分的粉笔字时十分方便有效。
The height of the brush body can be free to be adjusted, thereby being convenient for pupils to brush the words on the higher part of the blackboard.
采用纸笔测验探讨了二、四、六年级小学生读形声字的读音特点。
Using a paper-pencil test, this study investigated into second, forth and sixth grade. students'pronunciation of phonogram characters with different familiarities.
但他们对我的要求很严格，要我认真学习，把字写好……我是一个三年级的小学生，我喜欢游泳、跑步和看书。
But they very strict with me and asked me to seriously study, write the word... I am a third grader, I like swimming, running and reading.
但他们对我的要求很严格，要我认真学习，把字写好……我是一个三年级的小学生，我喜欢游泳、跑步和看书。
But they very strict with me and asked me to seriously study, write the word... I am a third grader, I like swimming, running and reading.
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