___more attention,the tree could have grown have grown better.
题目
___more attention,the tree could have grown have grown better.
A given B to give C giving D having given 答案是A这道题还原成完整句应该是if the tree had been given more attention,the tree could have grown better 那是不是改成Having been given more attention,.更好点呢?
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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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