用英语写一篇小短文“快乐的一天”要用上现在进行时要简单
题目
用英语写一篇小短文“快乐的一天”要用上现在进行时要简单
答案
A happy dayIt is Sunday and it is sunny. I go to the park with my parents. Look! There are some boys over there. They are playing football. A little boy is kicking the football. A tall boy is running ...
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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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