找朋友
题目
找朋友
( )1.what did he do yesterday?
( )2.who's going to go to the airport?
( )3.why don't you give him a kite?
( )4.does lingling like english food?
( )5.what did she have for breakfast?
A.that's a good idea!
B.yes,she does.
C.she had eggs and sausages.
D.he danced.
E.i'm going.
答案
D E A B C
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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