The purpose of the author iwriting this passage is to ____________( )
·comment and blame
·introduce and describe
·explaiand persuade
·interest and inform
出自:华北水利水电大学英语

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
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