来源：重庆启德雅思托福考试培训中心，一个认真做教育的团队，致力于帮助学生有效提升雅思、托福成绩。
Don't waste life in doubts and fears. — Emerson
不要把生命浪费于怀疑与恐惧中。—爱默生
众所周知托福阅读考试当中有10大类题型，除了图表题近年来很少看到之外，其它9类题型在考试三篇文章中均会出现。如果大家在托福备考的过程当中对于这些题型没有了解其结构以及解题方法，那么对托福阅读考试提分是非常不利的。
今天小编就为大家带来托福阅读10大题型之一 【推断题】的解题技巧，托福阅读推理题，每篇总是会有1-2道，在最新TPO中，此类推理题呈现上升趋势，一次考试总共有5-6道。
所谓【托福阅读推理题】，就是所需要的信息都包含在文章中，但是没有直接加以说明，需要考生从已知中推出。官方指南是这样说的：对于文中强烈暗示而未明确表述信息的识别和理解”。
其中，强烈暗示，即原文中给定的信息与正确答案的信息紧密相连，但含蓄间接，所以推断题不仅需要同学们学会快速定位，还需要大家能够正确分析文中相关内容，集合文章提供信息推理出合理选项。
我们先来说说怎么定义一道题是推断题，其实推断题往往题干中会包含“infer、suggest、imply、indicate”一些单词。
★出题形式如下：
l Which of the following can be inferred about X？
l The author of the passage implies that X…?
总的来说，推断题的解题技巧分为正向推理和逆向推理；今天小编主要给大家介绍托福阅读推断题的正向推理法。
正向推理
最终答案所描述的特质与文章所描述的特质一致。
这种一致性往往体现为“整体”和“部分”特质一致，因此“正向推理”也叫做“整体与部分推理”。
话不多说，看例题：
练习
TPO
2-P2
Another major discovery was made in Egypt in 1989. Several skeletons of another early whale, Basilosaurus, were found in sediments left by the Tethys Sea and now exposed in the Sahara desert. This whale lived around 40 million years ago, 12 million years after Pakicetus. Many incomplete skeletons were found but they included, for the first time in an archaeocyte, a complete hind leg that features a foot with three tiny toes. Such legs would have been far too small to have supported the 50-foot-long Basilosaurus on land. Basilosaurus was undoubtedly a fully marine whale with possibly nonfunctional, or vestigial, hind legs.
Question:
It can be inferred that Basilosaurus bred and gave birth in which of the following locations
A. On land
B. Both on land and at sea
C. In shallow water
D. In a marine environment
★解析：
↓扫读原文，没有提及关于 “bred and gave birth”的相关信息；因此需要推断。
↓但是原文提到 “Basilosaurus was undoubtedly a fully marine whale”.
↓“fully marine whale” 属于整体性质； “bred and gave birth”是部分性质；
↓“部分”应该具备“整体”性质；因此“bred and gave birth”同样是“fully marine”
✔因此此题正确答案为 D。
小伙伴们理解了么？如果停留在看的阶段，一直没有去做去实施，那效果必然不尽如人意，实践出真知，运用以上讲解的正向推理法来自己试一道练习题吧~
练习题
Even the kind of stability defined as simple lack of change is not always associated with maximum diversity. At least in temperate zones, maximum diversity is often found in mid-successional stages, not in the climax community. Once a redwood forest matures, for example, the kinds of species and the number of individuals growing on the forest floor are reduced. In general, diversity, by itself, does not ensure stability. Mathematical models of ecosystems likewise suggest that diversity does not guarantee ecosystem stability-just the opposite, in fact. A more complicated system is, in general, more likely than a simple system to break down. A fifteen-speed racing bicycle is more likely to break down than a child's tricycle.
Which of the following can be inferred from paragraph 5 about redwood forests?
A. They become less stable as they mature.
B. They support many species when they reach climax.
C. They are found in temperate zones.
D. They have reduced diversity during mid-successional stages
来源：重庆启德雅思托福考试培训中心，一个认真做教育的团队，致力于帮助学生有效提升雅思、托福成绩。
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