英语作文一次野餐
题目
英语作文一次野餐
答案
A PicnicI had a picnic with my parents last week. It was a sunny day .We started at seven o’clock. We went to the park by car. This park is very big. I think there were one thousand people there. I f...
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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