这篇英语文章的全文：Many people love drinking bottled water.They think that it is better to drink..
题目
这篇英语文章的全文：Many people love drinking bottled water.They think that it is better to drink..
答案
Many people love drinking bottled water .They think that it is better to drink bottled water than to drink _water_ out of tap .But all those _bottles_ are also bad for the environment .For example ,Am...
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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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