refer to与look up的区别和用法 例句
题目
refer to与look up的区别和用法 例句
答案
refer to提到
Don't refer to this matter again,please.
请别再提这件事.
look up 查询
If you don't know a word,you can look it up in a dictionary.
如果你有不识的字,可以查字典.
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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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