It is well known (what ) a person eats causes changes in the body.这是个名从、为么就不填that what..名从中的引导词how,
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It is well known (what ) a person eats causes changes in the body.这是个名从、为么就不填that what..名从中的引导词how,what,which,where和that遇见时、是不是就要把that省了?
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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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