短篇英语小故事(10字左右)
题目
短篇英语小故事(10字左右)
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The Goat and the Goatherd 山羊与牧羊人 A GOATHERD had sought to bring back a stray goat to his flock.He whistled and sounded his horn in vain; the straggler paid no attention to the summons.At last...
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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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