Have you decided__the children in Yushu?
题目
Have you decided__the children in Yushu?
By sending them some books and clothes
A.how you will help B.what you will give C.how much you will send
答案
A
根据答句进行意义判断:
--你决定如何帮助玉树的孩子们了?
--给他们寄书和衣服.
by doing sth是做事的方式,用how提问
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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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