考试了、帮忙找下、这是完型的第一句、帮忙复制个全文The young engineer sat down on a rock and resied
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考试了、帮忙找下、这是完型的第一句、帮忙复制个全文The young engineer sat down on a rock and resied
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The young engineer sat down on a rock and rested his head in his hands. He would never get home; it was 1 . For weeks he had been 2 in the Northwest Canadian forest. Now there was a terrible ...
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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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