My favourite singer 不少于40个词
题目
My favourite singer 不少于40个词
答案
she is such an ideal singer! she is a girl with a lot of talent. she is a girl but she has individuality like a boy. on the stage, she sings and dances so well. she is so happy and she makes us excit...
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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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