课程咨询

GRE首页 GRE课程 GRE动态 0元讲座 GRE模考网站

新东方在线 > GRE > GRE阅读 > 正文
扫码关注掌握一手留学资讯

扫码关注掌握一手留学资讯

回复XDF免费领

水平测试和备考资料

扫码关注公众号

GRE阅读题目解析：小群体中的动物更勇敢

2017-01-20 17:30:00来源：网络

　　【GRE阅读题目解析:小群体中的动物更勇敢】GRE考试考什么？GRE阅读是重点。新东方在线GRE频道为大家带来GRE阅读题目解析:小群体中的动物更勇敢，答案见下一页，希望对大家GRE备考有所帮助。更多精彩尽请关注新东方在线GRE频道!

　　查看全部：GRE阅读答案解析(汇总)

　　GRE阅读题目解析:小群体中的动物更勇敢

　　P3

　　One explanation for the tendency of animals to be more vigilant in smaller groups than in larger ones assumes that the vigilant behavior—looking up, for example—is aimed at predators. If individuals on the edge of a group are more vigilant because they are at greater risk of being captured, then individuals on average would have to be more vigilant in smaller groups, because the animals on the periphery of a group form a greater proportion of the whole group as the size of the group diminishes.

　　However, a different explanation is necessary in cases where the vigilant behavior is not directed at predators. J. Krebs has discovered that great blue herons look up more often when in smaller flocks than when in larger ones, solely as a consequence of poor feeding conditions. Krebs hypothesizes that the herons in smaller flocks are watching for herons that they might follow to better feeding pools, which usually attract larger numbers of the birds. (162 words)

　　6. 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 defending 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.

　　For the following question, consider each of the choices separately and select all that apply

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

　　A Similar behavior in different species of animals does not necessarily serve the same purpose.

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

　　C The avoidance of predators is more important to an animal's survival than is the quest for food.


本文关键字: GRE阅读 GRE阅读真题

上一页 1 2 下一页

添加新东方美研助教回复【GRE】获取

模考真题|写作题库|阅读机经|佛脚词汇

更多资料

添加美研助教号，
回复【GRE】获取备考必看资料包

  • 1.打开手机微信【扫一扫】，识别上方二维码；
  • 2.点击【添加美研助教号】，回复对应关键字领取学习资料。
更多>>
更多内容

关注新东方美研助教

回复【GRE】获取备考必看资料包

新东方美研备考资料
GRE录播课（全科班/单项班） GMAT6-8人直播VIP小班 托福直播精讲班（30天/60天）
更多>>
更多惊喜>>

添加美研助教号，
回复【GRE】获取备考必看资料包

  • 1.打开手机微信【扫一扫】，识别上方二维码；
  • 2.点击【添加美研助教号】，回复对应关键字领取学习资料。
更多>>
更多资料
我要
反馈 返回
首页
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10