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托福阅读素材:蜜蜂

2017-09-27编辑: 环球教育整理来自: 环球教育

  很多考生会抱怨托福阅读时间不够,还没完全理解文章就做题,正确率不高。其实这是我们对托福阅读素材不熟悉造成的,下面小编整理了一下托福阅读考试最新的素材,希望能帮助大家更加快速高效的备考托福。

  托福阅读素材:蜜蜂

  内容回忆:

  Honeybee 和 b 什么的一种蜜蜂,关于采蜜的交流。 B 只交流有没有蜂蜜,不交流蜂蜜位置。然后讲了原因以及 honeybee 交流位置信息的原因,生活的环境分别是热带雨林和温带森林什么的。

  参考阅读:

  Foragers communicate their floral findings in order to recruit other worker bees of the hive to forage in the same area. The factors that determine recruiting success are not completely known but probably include evaluations of the quality of nectar and/or pollen brought in.

  There are two main hypotheses to explain how foragers recruit other workers—the "waggle dance" or "dance language" theory and the "odor plume" theory. The dance language theory is far more widely accepted, and has far more empirical support. The theories also differ in that the former allows for an important role of odor in recruitment (i.e., effective recruitment relies on dance plus odor), while the latter claims that the dance is essentially irrelevant (recruitment relies on odor alone). The academic debate between these two theories is extremely polarized and often hostile.[7]

  Dance communication

  Figure-Eight-Shaped waggle dance of the honeybee (Apis mellifera). A waggle run oriented 45° to the right of ‘up' on the vertical comb indicates a food source 45° to the right of the direction of the sun outside the hive. The abdomen of the dancer appears blurred because of the rapid motion from side to side.

  It has long been known that successfully foraging Western honey bees perform a dance on their return to the hive, known as waggle dance, indicating that food is farther away, while the round dance is a short version of the waggle dance, indicating that food is nearby. The laden forager dances on the comb in a circular pattern, occasionally crossing the circle in a zig-zag or waggle pattern. Aristotle described this behaviour in his Historia Animalium.[8] It was thought to attract the attention of other bees.

  In 1947,[citation needed] Karl von Frisch correlated the runs and turns of the dance to the distance and direction of the food source from the hive. The orientation of the dance correlates to the relative position of the sun to the food source, and the length of the waggle portion of the run is correlated to the distance from the hive. Also, the more vigorous the display is, the better the food. There is no evidence that this form of communication depends on individual learning. Honeybees detect the dances of conspecifics by sensing near field sound and electric fields using the Johnston's organ.

  Von Frisch performed a series of experiments to validate his theory.[9] He was awarded the Nobel Prize in Physiology or Medicine in 1973 for his discoveries.

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