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2013年GMAT机经:7月GMAT阅读机经(蜂鸟化石)

2013-8-7 17:05:00 无忧考网

无忧考网为大家整理了2013年GMAT机经:7月GMAT阅读机经(蜂鸟化石),仅供参考!!

 一、本月原始【by PX】
  还有一个是讲鸟 什么hummingbirds蜂鸟。在GERMANY的西南发现了 以前一直以为只有在非洲和南美有。
  二、考古【感谢 元蜀黍】
  【版本一】
  P1.从化石里发现很久以前old world(非洲欧洲)有蜂鸟,但现在灭绝了。
  P2.出现了2个new finding 不停的question 或者是evaluate 蜂鸟化石。
  Q1.主题题
  Q2.下面哪个能够strength old world有蜂鸟。
  【版本二】710 V37
  有一段说有古蜂鸟吃一种植物,后来被现代的昆虫传播,所以现代的蜂鸟也可以食用(大概是这个意思吧,有考题)
  最后一段说到一个尚未解决的问题,就是为什么蜂鸟没有居住在更广阔的地方,而他们的食物链明显可以扩展到比现在更广阔的领域。(有考题)
  Q1.怎么证明蜂鸟化石与现代蜂鸟是同宗。我选的与一种植物有关(好像是哦)
  Q2.为什么没有扩展到比现在更广阔的地方
  【版本三】
  P1.科学家发现了蜂鸟化石,阐述了这种蜂鸟与现代蜂鸟的相似性,以及相关特征。
  P2.发现很久以前有一种花儿,开始时由蜂鸟来传媒接种的,但是后来发现又另外一种昆虫,代替了蜂鸟化石,传媒接种。
  整篇文章讨论了蜂鸟化石的发现以及一些有关的推断。
  Q1.主旨题。
  三、背景资料
  The birds were discovered near the village of Frauenweiler in southern Germany. Germany and all of Europe is part of the "Old World" – a region that also includes Africa, Asia and Australia. Finding modern-looking hummingbird fossils in the Old World might help to explain the existence of certain flowers in Asia and Africa that seem to scream, "I'm trying to attract a hummingbird!" Why do plants with flowers that seem to be designed to feed a hummingbird grow in parts of the world with no hummingbirds? Mayr has one possible explanation. He imagines a time when the ancestors of these hummingbird-friendly flowers and hummingbirds lived together in the Old World. They may have each changed the appearance of the other through a process of back-and-forth interaction called "coevolution." At some point the hummingbirds disappeared but the plants lived on, according to Mayr. Insects like long-tongued bees could have taken over the hummingbirds' pollination duties. Pollination is necessary for plants to produce seeds. This "case of the disappearing hummingbird" is a good example of how discovery of a very old fossil can change the way we look at the plants and animals that are alive today. Mayr named the new hummingbird species Eurotrochilus inexpectatus, which means an "unexpected European version of Trochilus." Trochilus is the name of a group of today's hummingbirds.

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