The brain finds it best to keep smell receptors available for unfamiliar and emergency signals 1 the smell of smoke, which might indicate the danger of fire.
[A] similar to [B] such as [C] along with [D] aside from
这道题目是逻辑关系题。考生需要考虑到前面出现的“unfamiliar and emergency signals”。首先我们来看一下这道题目的四个选项,我们需要把四个选项的意思分析清楚,然后带入到文章原文中去一一比对;
similar to 与……相似,和……相同;
such as 比如,诸如;
along with 沿(顺)着,连同…一起,与…一道,随同…一起;
aside from 除…以外;
在句子前面已经出现了总体概念“unfamiliar and emergency signals”(不熟悉或是紧急的信号),因此,后面的“the smell of smoke”也就可以帮我们引导正确的方向;因此上下文是非常明显的举例关系;such as就不难选出;再来,若上文名词为复数,下文为单数,且选项后没有逗号,such as的正确率是很高的。
The brain finds it best to keep smell receptors available for unfamiliar and emergency signals such as the smell of smoke, which might indicate the danger of fire.