初一的度假的英语作文
题目
初一的度假的英语作文
答案
On vacation,I went to the beach.There was sun,sand and sea.It made me feel exciting.I had great fun swimming in the sea.I also went to the mountain.It was interesting to climb the mountain.I was tired...
举一反三
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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