in short和in brief区别?

题目

in short和in brief区别?
一道英语选择题.
There is not much time left,so I'll tell you about it ____.
A in all
B in brief
C in detail
D in short
in short 也有简而言之的意思的话,那不是BD都可以了?

答案

In brief.虽然short 也有简略的用法,但是前面不加in,而且只能在特定词组里用,比如：I'll make it short,我简单说一下,to make a long story short,简单介绍以下情况.
总而言之,short,本身没有简略的意思,只能在特定情况下用,而前面加in不是特定情况之一.