冒号前后是从抽象到具体的过程，后面进一步补充说明前面的内容。

Eg.1997 passage3 Q2

60.The word "pervasive" (Line 1, Paragraph 2) might mean________.

[A]widespread

[B]overwhelming

[C]piercing

[D]fashionable

We live in a society in which the medicinal and social use of substances (drugs) is pervasive: an aspirin to quiet a headache, some wine to be sociable, coffee to get going in the morning, a cigarette for the nerves.

以上是成都考研英语辅导班老师为大家整理的答题技巧：英语阅读中冒号的意义只要我们把难的部分拿下了，那么，简单的那一部分应付起来自然就如探囊取物，唾手可得了。