In China ,parents ofen force thier kids to study .What’s more,the kids is very tired and busy to do
题目
In China ,parents ofen force thier kids to study .What’s more,the kids is very tired and busy to do their homework.The kids have no spaire time to play with other kids.The burden for kids is very heavy.
这有什么语法错误.请都给指出来.急.
答案
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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