“My vacation plans”为题的短文,60~70词,
题目
“My vacation plans”为题的短文,60~70词,
答案
My Vacation PlanI am taking a long vacation this summer.I thought about going to Beijing or Tibet.But decided on Shanghai.I'm going to Huangpu River.I'm leaving the first week in July and staying unti...
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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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