有谁能帮我写一篇英语作文,主题是 TV present a vivid wworld in front of us
题目
有谁能帮我写一篇英语作文,主题是 TV present a vivid wworld in front of us
答案
Television presents a vivid world in front of us.Through TV,we can learn what is happening half way across the world.Television also plays an important educational role in our daily life.For one thing...
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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