大学 英语口语 短文what is your favourite sport and why
题目
大学 英语口语 短文what is your favourite sport and why
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答案
My favorite spot is badminton.Badminton is lots of fun and players with even a moderate amount of skill can jump right in and enjoy not only the social aspects of team play but also the fantastic heal...
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已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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