用be at war with造句
题目
用be at war with造句
答案
be at war with...和...作战/争吵
如:They were at war with Germany.
他们与德国交战.
They are at war with each other.
他们互相争吵.
The two families are at war with each other.
两家彼此不和.
The two nations have been at war with each other for 5 years.
这两个国家已经打了5年仗了.
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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