GMAT考试已于2012年3月1日更换题库，以下是2012年3月的GMAT阅读机经更新，更新日期从2012年3月1日起至3月29日，目前共50题。澳际留学在此祝大家GMAT考试顺利!

17. It can be inferred from the passage that in species in which vigilant behavior is directed at predators, the tendency of the animals to be more vigilant in smaller groups than in larger ones would most likely be minimized if which of the following were true?

　　(A) The vigilance of animals on the periphery of a group always exceeded that of animals located in its interior, even when predators were not in the area.

　　(B) The risk of capture for individuals in a group was the same, whether they were located in the interior of the group or on its periphery.

　　(C) Animals on the periphery of a group tended to be less capable of dending themselves from attack by predators than animals located in the interior of the group.

　　(D) Animals on the periphery of a group tended to bear marks that were more distinctive to predators than animals located in the interior of the group.

　　(E) Animals on the periphery of a group tended to have shorter life spans than animals located in the interior of the group.

　　18. Which of the following best describes the relationship of the second paragraph to the first?

　　(A) The second paragraph relies on different evidence in drawing a conclusion similar to that expressed in the first paragraph.

　　(B) The second paragraph provides further elaboration on why an assertion made at the end of the first paragraph proves to be true in most cases.

　　(C) The second paragraph provides additional information in support of a hypothesis stated in the first paragraph.

　　(D) The second paragraph provides an example of a case in which the assumption described in the first paragraph is unwarranted.

　　(E) The second paragraph describes a phenomenon that has the same cause as the phenomenon described in the first paragraph.

　　19. It can be inferred from the passage that the author of the passage would be most likely to agree with which of the following assertions about vigilant behavior?

　　(A) The larger the group of animals, the higher the probability that individuals in the interior of the group will exhibit vigilant behavior.

　　(B) Vigilant behavior exhibited by individuals in small groups is more fective at warding off predators than the same behavior exhibited by individuals in larger groups.

　　(C) Vigilant behavior is easier to analyze in species that are preyed upon by many different predators than in species that are preyed upon by relatively few of them.

　　(D) The term “vigilant,” when used in rerence to the behavior of animals, does not rer exclusively to behavior aimed at avoiding predators.

　　(E) The term “vigilant,” when used in rerence to the behavior of animals, usually rers to behavior exhibited by large groups of animals.

　　20. The passage provides information in support of which of the following assertions?

　　(A) The avoidance of predators is more important to an animal’s survival than is the quest for food.

　　(B) Vigilant behavior aimed at predators is seldom more benicial to groups of animals than to individual animals.

　　(C) Different species of animals often develop different strategies for dealing with predators.

　　(D) The size of a group of animals does not necessarily rlect its success in finding food.

　　(E) Similar behavior in different species of animals does not necessarily serve the same purpose.

　　20.本地集中生产的好处

　　【版本1】

　　关于本地集中生产的好处，主要是由于地域的关系让很多生产都集中在一起，这样有很多好处，比如说原材料都在一起,生产互补等等。比较好懂，就是问题的选项太长了，费时间，每个选项都是大段大段的叙述，每个问题的选项都可以构成逻辑一道题了。

　　【版本2】

　　第一段：定义密集经济，并且说类似的公司扎堆是常有的是)。许多经济学家列举advantage来解释：第一，扎堆在一个特别的地方他们可以共享稀缺资源啊(这里高亮);第二，就算这个地方没什么特别的，这些什么公司(这里是高亮的三个单词，不大记得了，似乎有一个是structuring)他们可以共享同质的劳动力市场(human resources)啥的

　　第二段：一个叫S的人跑出来反驳，说扎堆不好啊，扎堆的话会引起公司之间的什么竞争的，然后说__理论证明了__

　　第三段：提出另外一种假说解释，又说集中在一个location好。(有题)

　　Q1：S会同意关于第一个高亮的什么说法

　　我这里似乎选的是共享的好处不如竞争带来的威胁强悍，

　　Q2：那个理论证明高亮部分其实会咋样

　　Q3：第二段的专家最可能怎么评价第一段提出的advantage：

　　insufficient to explain 或类似意思

　　Q4：第二段引用的理论的implication，用排除法

　　以上就是3月29日更新的GMAT阅读机经，考生可以适当借鉴，并通过练习来掌握GMAT阅读的解题规律，从而在GMAT考试中发挥出更好的水平。 相关链接：

1.GMAT考试 3月6日更新GMAT阅读机经(二十二)

2.GMAT机经汇总 3月6日更新GMAT阅读机经

3.GMAT考试 3月29日更新GMAT阅读机经(二)

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