·英语作文 The life of American students 帮我列个范文吧!
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·英语作文 The life of American students 帮我列个范文吧!
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American High School Life High School In America,after middle school comes high school,which includes grades 9 through 12.Students are required to take certain subjects like English,social studies,mat...
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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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