the little girl is very （ ） about her new rooms A excite B exciting C excited D excitement
题目
the little girl is very （ ） about her new rooms A excite B exciting C excited D excitement
this pen ( )me 200 yuan A took B cost C spent D paid
We know the moon is our satellit ..It ( ) round the Earth day and night .It ( ) around once a month every 29a and a half days
第一个括号：A moved Bwill move C move D is moving
第二个括号：A go B goes C went D will go
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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