在雅思阅读中，寻找定位词是回答问题中节省时间的关键所在，可是又一些定位词是不是好寻的，而且没有头绪，这时候你就要学会标点符号和定位词之间的关系了！

考生们在阅读考试中往往忽视了原文的重要“信号”，—特殊标点符号，这些符号包括常见的破折号、引号，和相对少一些的冒号、括号和问号(设问)。然而，这些符号恰恰有很好的提示性，出现的句子往往出题。

例如：

1.Developed most probably as a defense against forest fires, the bark of

the cork oak has a particular cellular structure — with about 40 million cells

per cubic centimeter — that technology has never succeeded in replicating.

这句话破折号起到句中停顿作用，补充解释"a particular cellular

structure"，去掉这个补充成分，此句要说明的是软木作为木材有抵御森林火灾的天然优势，而人类技术从未能企及。

2.If the bark is stripped on a day when it's too cold — in when the air is

damp— the tree will be damaged.

此句说“如果在寒冷或潮湿的日子里剥树皮，树会遭损伤”，通过"if"可以看出是讲“条件”。

3.

The Montreal study

Participants, who were recruited for the study through advertisements, had

their brain ACTivity monitored while listening to their favorite music. It was

noted that the music stimulated the brain's neurons to release a substance

called 1 _______ in two of the parts of the brain which are associated with

feeling 2________.　　Researchers also observed that the neurons in the area of

the brain called the 3_______ were particularly ACTive just before the

participants' favourite moments in the music - the period known as the 4_______.

ACTivity in this part of the brain is associated with the expectation of

'reward' stimuli such as 5_______.

这组考题可谓把标点符号用到，从空格考点来看，五道题目有三题明显考术语(往往有引号)，而后一“reward”作为术语可以容易定位到。如此，在利用标题定位段落后，找到一两段话中的术语，题目就迎刃而解。具体来看，空格1考一种物质(化学物质名称，早在剑桥4里就已经出现过类似考察)substance往往就指hemical。

空格3考的是大脑区域的名称，空格4考的是“时间段或阶段'名称，空格5考察举例名称，但给出有引号的术语来定位。

原文：

The first thing they discovered is that music triggers the production of

dopamine — a chemical with a key role in setting people's moods— by the

neurons(nerve cells) in both the dorsal and ventral regions of the brain.

此处对应的是空格1主要的提示信号仍是破折号，起到补充解释'dopamine'的作用，于是此处答案即使'dopamine'。

What is rather more significant is the finding that the dopamine neurons in

the caudate — a region of the brain involved in learning stimulus— response

associations, and in anticipating food and other 'reward' stimulus — were at

their most ACTive around 15 seconds before the participants' favorite moments in

the music.

此句中破折号再次起到信号作用解释'caudate' 是大脑中的一个区域，于是空格3答案便是这个词，而另一处破折号前出现空格31的定位词'reward'

stimulus，于是它对应的举例就是空格5'food'。

The researchers call this 'anticipatory phase' and argue that the purpose

of this ACTivity is to help us predict the arrival of our favorite part.

紧接着一句中提到的这一术语正是空格4的答案，如果词汇量充分，也很容易理解'anticipate'本来就与'predict'

和'before'对应到，'phase'指时期或阶段，可以对应'period'。

看到此，大家也应该知道标点符号的关键之处了吧！

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