简短的英语自我介绍
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简短的英语自我介绍
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This is me My name is Amy. I’m 12 years old. I’m in Class1 Grade 6. I have a lot of hobbies. I like reading books, listening to music, drawing pictures and so on. I read books every day. I can lear...
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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