英语作文“My ideal room ”
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英语作文“My ideal room ”
答案
My ideal roomMy ideal room should be like this.For one thing,the room must be big and the ceiling must be high; for another,a good air conditioner must be set.Besides I would like to paint this room w...
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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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