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如何破解细节题之不可忽视的指示代词——帮你顺藤摸瓜找到答案

2018-06-07 13:57

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托福阅读


做托福阅读需要定位,这是很多同学都知道的。不过定位词后面出现的指示代词,如常见的it, they, this, that, these, those, such…对解题来说到底有什么妙用,你也许还不知道吧?今天我们来说说指示代词对于我们找答案的重要性。


我们正好用一篇文章The Role Of Diapause来一窥究竟。


1


题目

1. According to paragraph 1, why do some organisms have a resting stage during their life cycle?

A. To recover from injuries suffered during harsh conditions

B. To devote all of their energy to a period of growth and reproduction

C. To wait for local conditions to become favorable for important life events

D. To prepare to move to a different environment if conditions become harsh


原文

If conditions within an organism’s environment occasionally or regularly become harsh, it may be advantageous for an organism to have a resistant stage built into the life cycle. In such a life history strategy, the organism suspends any growth, reproduction, or other activities for a period of time so that they may occur at a later, more hospitable time…


解析

通过对题目中定位词的筛选,我们可以选定resting stage,因为其他的名词要么在前文中出现过要么就是主题词,全文都有。使用resting stage我们定位到了原文,不过原文中用resistant stageresting stage进行了改写。在接下来的一句中出现了指示代词such。通常定位词后面紧跟的句子里如果有指示代词,那么答案通常在指示代词的句子里面。所以我们细读该句,即可发现C选项是对该句的改写,而改写方式是概括。


2


题目


2. According to paragraph 2, why do many seeds require a period of stratification?

A. To slowly build up a tolerance for lower and lower temperatures

B. To guarantee that the seeds grow after and not before unfavorable weather

C. To make sure that the seeds can deal with unpredictable conditions

D. To give the seeds enough time to germinate before winter


原文

Unfavorable conditions that are relatively predictable probably pose a simpler problem for organisms than do unpredictable conditions. Adaptations to the regular change of seasons in the temperate and polar regions may be relatively simple. For example, many seeds require a period of stratification, exposure to low temperatures for some minimum period, before they will germinate. This is a simple adaptation to ensure that germination occurs following the winter conditions rather than immediately prior to their onset…



解析

很明显这道题目的定位词应该选取stratification,即便你不认识,看起来它也像一个术语。通过定位我们在原文该段的第三句话里找到。在紧接着的第四句话里,出现了指示代词This。仔细读懂这句话就能发现选项B是对该句的改写。原文的ensure对应上B选项中的guarantee, 原文的rather than immediately prior to对应上B选项中的after and not before.基本属于同义词替换这种简单的改写方式。


3


题目


3. According to paragraph 5, how do amphibians such as spadefoot toads survive the severe heat conditions in the North American deserts?

A. They dig down into the ground and go into a resistant resting state.

B. They remain in the ponds that develop after it has rained.

C. They lose their outer layer of skin.

D. Their eggs live dormant until the desert air becomes cooler and more moist.


原文

similar strategy—accelerated development combined with a resting stage—has also allowed amphibians to inhabit deserts. The spadefoot toads, such as Couch’s spadefoot toad, inhabit some of the most severe deserts in North America. Adults of this species burrow deeply into the substrate where it is cooler and perhaps more moist. Here they enter into a resting state in which they are covered with a protective layer of dead skin.



解析


此题的定位词应该选取spadefoot toad,因为是题目中具体的例子。定位词的选取可以秉着越具体越好的原则,这样更明确。通过spadefoot toad,我们能够定位到第二句,可喜的是在后面一句话我们即可找到指示代词this。该句中的this species 就是spadefoot toad,句中说到burrow deeply into the substrate正好是选项A中的dig down into the ground,所以A为正确答案,这是最常见的同义词替换的改写方式。



以上三题都是指示代词在细节题的答案揭示中所起的作用。当然指示代词在托福的其他题型中的解题作用也是非常明显,包括句子插入题和词汇题。托福阅读题型中还有专门一类题型-指代题,用以考察大家对前后文的行文连贯性的掌握,和上下文的理解。大家在解题的时候希望能够注意指代词,从而提高我们对答案搜寻的敏感度。


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