Fifty students were supposed to attend the lecture,but only half of them____

问题描述:

Fifty students were supposed to attend the lecture,but only half of them____
(A) came out (B) turned up (C) showed off
同时请说明原因,
A好象也是出来了的意思,为什么不对?

(B) turned up 出现;出席
补充: A是出来,而不是出席,意思是不一样的.
C炫耀就更不对了.
再补充:come out 这个出来是从----出来,比如 he came out from the house 他从屋子里出来.
文章的意思是:本应该五十个同学参加的讲座,结果就来了一半.
而且你再想想,即使要用的话也不能用出来,也得用进去啊,呵呵.不明白再告诉我.
再再补充: 这里是讲座,和家没有关系的. 不能自己想怎么理解就怎么理解.