11. He is not so much _______ a help as I thought he would be. (A) of (B) in (C) at (D) as 难度：易
题目
11. He is not so much _______ a help as I thought he would be. (A) of (B) in (C) at (D) as 难度：易
答案
A
of a help= helpful
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
最新试题
热门考点