Dear Diana~~English class A
题目
Dear Diana~~English class A
Dear Diana,
I can understand English in class, but when I do exercises, I often have a lot of mistakes. Could you help me?
Thank you very much
Harry
答案
I think you can write down your mistakes in your notebook.And don't forget to write the correct answers next to the mistakes.It's a goog idea to go over the correct answers when you see them.I hope these can help you.
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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