1.____it is to chat with friends while playing cards.A.What great fun
题目
1.____it is to chat with friends while playing cards.A.What great fun
B.What a great fun C.How fun D.How funny 就一道..一定要对啊.
答案
A
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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