简单说下原因.

题目

简单说下原因.
4,In ancient times,the troops used three piles of fire as a ______ of a war.A,example B,mark C,signal D,symbol 5,it is important for us to employ a word or phrase to the _____ in language studies.A,sitvation B,expression C,condition D,translation 6,popular music is liked by many people,but it is not to everyone”s______.A,manrers B,smell C,taste D,thought

答案

C 在古代,部队用三堆火作为战争的信号.signal 信号,example例子    mark记号,分数,symbol 象征

A employ在这里是‘使用,运用’的意思,常和介词to搭配,A选项单词打错了应该是situation,情形,情况的意思,本句话为在语言学习中,把某个单词或词组运用到语境中是重要的.
expression表达,condition条件,translation翻译

C,流行音乐被很多人喜欢,但是并不符合所有人品味.A选项是manners,礼貌,方式方法.