100词左右 简单点的都行
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100词左右 简单点的都行
答案
1.July 5th Monday cloudy Today I came back from a place named “he chuan”,it’s a good place.There has some nice view like chang jiang river.I came there in two days ago.Our aunt is here.We had a goo...
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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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