every day it is easy to see advertisements in english all around us阅读答案
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every day it is easy to see advertisements in english all around us阅读答案
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Every day , it is easy to see advertisements in English all around us. Look at your own bags atd clothes, and at the bags and clothes of your classmates. How many different advertisements can you see ...
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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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