if my dream can come true,___半命题演讲
题目
if my dream can come true,___半命题演讲
2－3分钟
最好是原创的
答案
If my dream could come true instantly ,I would like them to be as follows:First of all .There are no wars and no conflicts in the world ,People of different national and race can coexist peacefully an...
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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．
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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