He was awardde the 2006 Nobel Peace Prize for the great contributions he had mde to helping the poor

He was awardde the 2006 Nobel Peace Prize for the great contributions he had mde to helping the poor

题目
He was awardde the 2006 Nobel Peace Prize for the great contributions he had mde to helping the poor out of poverty,中的helping是不是应该改为help
答案
不应该,因为contribute……to doing是固定搭配,而句中用的只不过是被动语态.
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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.
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