,to这样可以吗(标点后接to）The retired man donated most of his savings to the school damaged by the
题目
,to这样可以吗(标点后接to）The retired man donated most of his savings to the school damaged by the
earthquake in Yushu,______the students to return to their classroom
A.enabling B.having enabled C.to enable D.to have enabled
求搭救
答案
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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