中间图

Or

雷哥网GMAT>题库>OG16>阅读RC>9180

阅读RC-9180 (第1/8题) Time Cost00:00
收藏
报告题目错误
请选择错误类型:
请描述一下这个错误:

取消

建议使用官方纸质指南,查看对照完整题目

Biologists have advanced two theories to explain why schooling of fish occurs in so many fish species. Because schooling is particularly widespread among species of small fish, both theories assume that schooling offers the advantage of some protection from predators.

Proponents of theory A dispute the assumption that a school of thousands of fish is highly visible. Experiments have shown that any fish can be seen, even in very clear water, only within a sphere of 200 meters in diameter. When fish are in a compact group, the spheres of visibility overlap. Thus the chance of a predator finding the school is only slightly greater than the chance of the predator finding a single fish swimming alone. Schooling is advantageous to the individual fish because a predator's chance of finding any particular fish swimming in the school is much smaller than its chance of finding at least one of the same group of fish if the fish were dispersed throughout an area.

However, critics of theory A point out that some fish form schools even in areas where predators are abundant and thus little possibility of escaping detection exists. They argue that the school continues to be of value to its members even after detection. They advocate theory B, the "confusion effect," which can be explained in two different ways.

Sometimes, proponents argue, predators simply cannot decide which fish to attack. This indecision supposedly results from a predator's preference for striking prey that is distinct from the rest of the school in appearance. In many schools the fish are almost identical in appearance, making it difficult for a predator to select one.The second explanation for the "confusion effect" has to do with the sensory confusion caused by a large number of prey moving around the predator. Even if the predator makes the decision to attack a particular fish, the movement of other prey in the school can be distracting. The predator's difficulty can be compared to that of a tennis player trying to hit a tennis ball when two are approaching simultaneously.

【OG18-P363-405题】According to the passage, theory B states that which of the following is a factor that enables a schooling fish to escape predators?

  • 分析A选项
    xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  • 分析B选项
    xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  • 分析C选项
    xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  • 分析D选项
    xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  • 分析E选项
    xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

音频解析

00:00/00:00

500雷豆
暂无雷哥网文字解析
当前版本由 ya**** 更新于2015-10-27 15:39:49 感谢由 ya**** 对此题目的解答所做出的贡献。
这题问理论B说哪个因素会帮助鱼群摆脱捕食者,定位点很明确,是“理论B”底下的细节,定位到最后一段。能回答问题的一共有两点,第一点在“Sometimes, proponents argue”到“to select one”之间,说鱼数量多导致捕食者难以决定究竟吃谁;第二点在“The second explanation”到文章结尾,说鱼群中大量鱼的运动会使捕食者分心而难以捕食成功。所以这两点因素(数量多和鱼群运动)都能够正确回答这个问题。

A选项鱼群形成牢固的整体,文章中从未提及,属于无中生有的内容;

B选项说鱼群中鱼的运动,与原文中第二点相符;

C选项说捕食者侦测不到鱼群,是文章中理论A里面的内容,提及但无关;

D选项说鱼躲在其他鱼的身后,又是文中没有提到的内容;

E选项说鱼群能高速分散,文章没有提及这一点

因此,正确答案为B
当前版本由 你是风儿 更新于2015-11-18 18:00:08 感谢由 你是风儿 对此题目的解答所做出的贡献。

分析最后一段的结构

结论:predator不能attack fish

理由1.school fish外表相似 predator认不出

理由2:周围其他的prey对predator的感官有影响 

很明显只有B是符合理由2的


题目讨论 (3条评论)

用户头像
提交
  • 用户头像
    为了DREAM得豁出去啊

    1.选择困难症;2.伙伴动作的干扰
    1 0 回复 2017-08-25 17:06:17
  • 用户头像
    utada

    答案来源:the movement of other prey in the school can be distractin
    0 0 回复 2016-08-04 15:51:59
  • 用户头像
    AnneD

    很好
    0 0 回复 2016-05-19 11:31:35
    • 评论用户头像

      AnneD回复AnneD

      It's good

      0 0 回复 2016-05-19 11:31:53

    题号选择

    科目: 阅读RC

    • 句子改错SC
    • 逻辑CR
    • 阅读RC
    • 数据充分DS
    • 问题求解PS
    • 综合推理IR

    来源: OG16

    • 全部
    • OG20
    • OG20新题
    • OG19新题
    • OG18新题
    • OG18分册
    • OG17新题
    • OG16
    • OG12
    • 破解版12
    • 破解版08
    • 破解版07
    • GWD
    • 精选题库
    • OG18自测章
    • Manhattan
    • magoosh
    • 难题300
    本题信息

    3m6s

    平均耗时

    74.8%

    平均正确率

    该题由网友l9tf2sQ提供 上传GMAT题

    • 手机注册
    • 邮箱注册
    登录>







    关闭图标

    标题图

    • 图标

      知识库学习

      GMAT语法、逻辑、阅读、数学各单项备考知识点学习及测验
    • 图标

      在线做题

      包含GMAT各单项必考知识点题目、OG/PREP/GWD/雷哥讲义题目、难度650/680/700/730题库题目练习及题目解析
    • 图标

      在线模考

      语文套题/数学套题/全套仿真模考,包含GWD/PERP/精选模考等上百套套题模考
    • 图标

      在线测评

      适合5种不同基础的GMAT学员,测评后可自动出具分数报告及复习计划指导
    • 图标

      资料下载

      GMAT必备备考资料下载、鸡精下载、课程课件等免费下载
    • 图标

      课程学习

      注册会员后,可在GMAT课程区,选择免费直播课程及公开课程进行在线学习
    ×
    请你选择你要查看的模考成绩单
    立即开通 暂不开通
    加载图片
    网络异常