no matter how difficult and how many obstacles ahead they will insist on.
题目
no matter how difficult and how many obstacles ahead they will insist on.
no matter how difficult and how manyobstacles ahead they will insist on.
答案
没有问题的.
no matter.ahead 是伴随状语,在什么样的情况下
主语：they
谓语：insist on
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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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