I want to say it one more time,i really love the colors of the autumn.the autumn colors of earth,is
题目
I want to say it one more time,i really love the colors of the autumn.the autumn colors of earth,is aways give us a kind of calm and peaceful feeling.这句子对吗?地球后那个is加的对吗?语法上有错误吗?
答案
不要那个is
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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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