写英语对话要怎样开头?关于"hou to find happiness in life"主题的.
题目
写英语对话要怎样开头?关于"hou to find happiness in life"主题的.
答案
There is something in the world. It has no shape, no color and no weight. It can’t be seen or touched. But everyone wants it very much. 或者Happiness is the most precious thing in the world, which ca...
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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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