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2011年12月27日更新GMAT阅读机经(五)

所属:其他考试 作者:cwf1986 阅读:1770 次 评论:0 条 [我要评论]  [+我要收藏]

小编摘要:海词为您收集GMAT机经,充足的准备是考G成功的最重要的一步。

  V5(730)

  一篇将关于蚂蚁 的 social work的问题, 三段, 第一段大概讲蚂蚁间怎样相互配合盖房子; 第二段讲的好像是进化过程,不同的蚂蚁的social程度不同; 最后一段是对 其中的一种成员(L开头的)的职能——不用搬只吐丝的 进化原因的假说,有两个,不确定是哪个。(关于假说有考题); 关于进化是不是分了不同的线——细节题

  V6(760 V43)

  weaver ant,一共3段,题目较难

  1.为什么提到in vertebrate eye?主要是要强调这种ant的合作很NB,看似mission impossible哈~~

  2.提到larvae时的作者的态度?Astonishment! 牺牲小我完成大我啊,除了CD已经没有无私的地方了吧,呵呵。

  3.从文章可以infer出different level of cooperation among what ? 选项有不同的种群的ant,同一种群不同evolution line的ant,worker ant,bee。这个选项很tricky,应该是选同一种群不同evolution line的ant

  4.从文章中infer什么。定位第三段。这个选项更模棱两可。

  V7(V34)

  weaver ant里有一题说作者说weaver ant里的的一种O**(一个O字开头的单词,weaver ant的一种)coorperation比其他种类的好,evolution更完善,问weaken的。选项有C.bees怎样怎样,大概说bees在某一方面做得更好吧。JJ里有筒子选了这个,但我觉得是个无关项,因为就算bees比O** ant做得更好,也不能说明O**就不比其他种weaver ant好啊...还有D.也是说另外一种动物怎样怎样,我觉得也是无关项。最后我在B和E之间犹豫了很就选了E。B说O** weaver ant的先进性(不是这个词,但是大概是这个意思)solely depend on factors other than 筑巢(文章说O**筑巢的时候的合作很令人吃惊的),E说other types of weaver ant will finally evolve to the advanced level。我当时的想法是如果其他的weaver ant也能发展到先进的程度,就不能说O比其他先进了。但我觉得有点奇怪,因为我很清楚记得选项用的是will finally这个词,如果用了will finally evolve的话就是一种肯定的语气了,但文章最后一段说了其他的weaver ant没发展到O**那种程度,其中一个可能是因为他们在进化到那种程度之前灭绝了。

  背景资料 感谢deodar

  Weaver ants or Green ants (genus Oecophylla) are eusocial insects of the family Formicidae (order Hymenoptera). Weaver ants are obligately arboreal and are known for their unique nest building behaviour where workers construct nests by weaving together leaves using larval silk.[1] Colonies can be extremely large consisting of more than a hundred nests spanning numerous trees and contain more than half a million workers. Like many other ant species, weaver ants prey on small insects and supplement their diet with carbohydrate-rich honeydew excreted by small insects (Hemiptera). Oecophylla workers exhibit a clear bimodal size distribution, with almost no overlap between the size of the minor and major workers.[2] [3] The major workers are approximately eight to ten millimeters in length and the minors approximately half the length of the majors. There is a division of labour associated with the size difference between workers. Major workers forage, defend, maintain and expand the colony whereas minor workers tend to stay within the nests where they care for the brood and 'milk' scale insects in or close to the nests.

  background info con’t: The weaver ant's ability to build capacious nests from living leaves has undeniably contributed to their ecological success. The first phase in nest construction involves workers surveying potential nesting leaves by pulling on the edges with their mandibles. When a few ants have successfully bent a leaf onto itself or drawn its edge toward another, other workers nearby join the effort. The probability of a worker joining the concerted effort is dependent on the size of the group, with workers showing a higher probability of joining when group size is large.[14] When the span between two leaves is beyond the reach of a single ant, workers form chains with their bodies by grasping one another's petiole (waist). Multiple intricate chains working in unison are often used to ratchet together large leaves during nest construction. Once the edges of the leaves are drawn together, other workers retrieve larvae from existing nests using their mandibles. These workers hold and manipulate the larvae in such a way that causes them to excrete silk. They can only produce so much silk, so the larva will have to pupate without a cocoon. The workers then maneuver between the leaves in a highly coordinated fashion to bind them together.[1] Weaver ant's nests are usually elliptical in shape and range in size from a single small leaf folded and bound onto itself to large nests consisting of many leaves and measure over half a meter in length. The time required to construct a nest varies depending on leaf type and eventual size, but often a large nest can be built in significantly less than 24 hours. Although weaver ant's nests are strong and impermeable to water, new nests are continually being built by workers in large colonies to replace old dying nests and those damaged by storms.

  以上就是12月27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。

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2012-05-11 10:25 编辑:cwf1986
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