（三） 例证题
1. 例证题题型举例
As well， there are 2，000 transmitter towers around Australia， many in high density residential areas. (43）
[E] For example， Telstra， Optus and Vodaphone build their towers where it is geographically suitable to them and disregard the need of the community. The electromagnetic radiation emitted from these towers may have already produced some harmful effects on the health of the residents nearby.
[F] The conclusion is that mobile phones brings more harm than benefit.
题解：
根据towers的复现关系， 选择E为正确答案。这是一道典型的例证题。
2. 例证题应试技巧
例证题为7选5题型的常考点之一， 所以阅读时对于for example， for instance， such as， as 等引出的例子可以注意， 划下这几个提示词， 以便做题时查找。由于阅读文章大都是说明文和议论文， 所以文章中举出一些例子无非是为了说明一定的道理。无论例子在原文的何处出现， 这个例子之前或之后不远处通常都有一句总结说明性的话， 这句话是例子所说明的观点，因此是解题的关键， 要特别关注。
3. 表达例证题的注意事项
（1） 词汇衔接手段 illustrate （例证）， give an example （举例）， verify （证实）， for instance（例如）， for example （例如）。
（2） 注意例证所在段落的主题句。
例证选项与例证所在段的概括段落思想的主题句具有一致性。因为举例的目的是为了说明观点， 而段落中的例子大多是说明段落主题思想的。
（四） 定义题
1. 定义题题型举例
(44）Of these， the ammonites are very interesting and important.They have a shell composed of many chambers， each representing a temporary home of the animal.As the young grew larger it grew a new chamber and sealed off the previous one.Thousands of these can be seen in the rocks on the Dorset Coast.
[A] The shellfish have a long history in the rock and many different kinds are known.
[B] Nevertheless， we know a great deal about many of them because their bones and shells have been preserved in the rocks as fossils. From them we can tell their size and shape， how they walked， the kind of food they ate.
题解：
给陌生概念下定义， 往往出现在文中或段落靠前的地方， 因此定义选项往往成为段首题的宠儿， 所以该题选A。
2. 定义题应试技巧
定义题的出现往往与文章结构有关系， 根据英文的写作习惯， 定义出现在段首的情况居多。因此， 如果出题点在段首， 则可以先考虑是否为定义题。