He was very happy that he could get (a )in the match
题目
He was very happy that he could get (a )in the match
He was very happy that he could get (以a开头的单词 )in the match
答案
ahead
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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