this shirt is (my brother’s ) they are (mechanics) Helen is (russian)对括号部分提问
题目
this shirt is (my brother’s ) they are (mechanics) Helen is (russian)对括号部分提问
中间那个是这样写的:__ are thier ____,在横线上填空
答案
1. whose shirt is this?
2. what are their jobs?
3. what is Helen's nationality?
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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