小学五年级各种英语作文【至少12句】
题目
小学五年级各种英语作文【至少12句】
答案
My summer holidayLast summer holiday I was very happy.Because I went to Shen Zhen.There was very hot.But it was very beautiful.First I went to the ocean.It is very big.I sat on the beach.And I made a ...
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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