1.our teacher put a chair in_______ of the blackboard.A.front B.the front C.the back D.middle
题目
1.our teacher put a chair in_______ of the blackboard.A.front B.the front C.the back D.middle
2.Shanghai is in the ___________ of our country.
A.east B.south C.west D.north
请尽快!
3.When the train came,the girl was too __________ to move.
A.frightened B.happy C.amazing D.careless
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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