作业帮笔的历史要英语的,
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笔的历史要英语的,
笔的历史要英语的,
笔的历史要英语的,
the pen has a long history especially in china. in ancient china,people start to wtite something by
knife,they write the words in the bamboo.time passed by,a soldier named Mengtian convented a chna pen.,