用in over under on in in front near 篇作文 60字就够了
题目
用in over under on in in front near 篇作文 60字就够了
答案
There is a tall tree in front of my house. I love it very much. When spring comes, the thick leaves make the tree beautiful and lively. And in summer, my parents and I often sit under the big tree and...
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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