備考寶典：攻克托福閱讀推斷題

推斷題好象是托福閱讀里面比較容易的一種題目。搞定推斷題的要點其實只有一個，那就是理清作者的邏輯。

在看懂每句話句義的基礎上(這一部分工作的精髓karahana版主在上次的句子簡化題專題里面已經說過了)，還需要的是明白前后句之間的關系，了解他們在作者的論證或者敘述中所起的作用，在此之后，閱讀選項，直接選出正確選項，或者排除所有錯誤選項得到正確選項就好。

干說起來也沒有什么感覺，咱們來看幾個例子。

【例1】Paragraph 1: Groundwater is the word used to describe water thatsaturates the ground, filling all the available spaces. By far the mostabundant type of groundwater is meteoric water; this is the groundwater thatcirculates as part of the water cycle. Ordinary meteoric water is water thathas soaked into the ground from the surface, from precipitation (rain and snow)and from lakes and streams. There it remains, sometimes for long periods,before emerging at the surface again. At first thought it seems incredible thatthere can be enough space in the ―solid‖ ground underfoot tohold all this water.

1. Which of the following can be inferredfrom paragraph 1 about the ground that we walk on?

○It cannot hold rainwater for long periodsof time.

○It prevents most groundwater fromcirculating.

○It has the capacity to store large amountsof water.

○It absorbs most of the water it containsfrom rivers.

這個題目其實只需要關注段落中的最后一句就可以了，因為這是唯一一句據(jù)提到了“我們腳下的土地”的，句中說，‘乍一想起來，我們腳下結實的土地居然能有空間容納這么多的水，這似乎有點不可思議。’這句中透露的一個事實就是，我們腳下的土地就是能容納這么多水，于是C選項正確。

【例2】Paragraph 1: The transition from forest to treeless tundra on amountain slope is often a dramatic one. Within a vertical distance of just afew tens of meters, trees disappear as a life-form and are replaced by lowshrubs, herbs, and grasses. This rapid zone of transition is called the uppertimberline or tree line. In many semiarid areas there is also a lowertimberline where the forest passes into steppe or desert at its lower edge,usually because of a lack of moisture.

3. Which of the following canbe inferred from paragraph 1 about both the upper and lower timberlines?

○B(yǎng)oth are treeless zones.

○B(yǎng)oth mark forest boundaries.

○B(yǎng)oth are surrounded by desertareas.

○B(yǎng)oth suffer from a lack of moisture.

段落中已經說明，upper timberline是樹林的上端與草地、灌木叢的分界線，而lower timberline是樹林下端與草原或是沙漠的分界線，于是upper and lower timberlines的共同點就是，他們都是樹林與其他地區(qū)的分界線，也就是樹林的邊界，B選項正確。

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