英语语法题 (给解题说明)
题目
英语语法题 (给解题说明)
The man cast his net again,____(hope)to catch fish.
__(not know)his phone number,I can't get in touch with him.
As a result of his refusal__(accept)failure,he achieved his ambition.
答案
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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