You must take careful when you walk across the street中的 careful 是否正确
题目
You must take careful when you walk across the street中的 careful 是否正确
答案
You must take care when you walk across the street.
You must be careful when you walk across the street.
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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