联句eight seven plus is what 2 can count you flowere the 3 now can she the guitar play
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联句eight seven plus is what 2 can count you flowere the 3 now can she the guitar play
联句eight seven plus is what 2 can count you flowere the 3 now can she the guitar play not 4when was i could four i sing songs 5could tom not swim year last
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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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