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阅读模拟练习题(177)

2017-05-26 16:06:00来源：网络

　　为了帮助大家练习GRE阅读题考点，新东方在线GRE频道为大家带来GRE阅读模拟练习题一文，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!

　　Our study revealed that nest-guarding long-tailed skinks (a species of lizard) homed (returned to their nests) more successfully when displaced shorter distances. There are two reasons why homing success rates decreased with increasing displacement distance. One possibility is that females were simply displaced too far to find their way home. However, this is unlikely given that some individuals managed to find their way home from each distance we used. The second possibility deals with trade-offs between the risks associated with making a long return trip and the benefits of returning. Animals should expend energy only when the associated costs are low. As reptiles increase the time spent moving, their daily energy expenditure increases dramatically. The energetic costs of returning home and the chances that the eggs will have been preyed upon during the return trip both increase substantially as displacement distance increases. For example, the 130 hours (5.5 days) that female skinks spent returning from a distance of 300 meters is sufficient for an egg-eating snake to locate and prey upon the entire clutch. However, females with larger clutches were more likely to home at distances over 50 meters. For these females, the relative fitness benefits associated with having more eggs successfully hatch may outweigh the energetic costs of returning to a nest site, even if the nest may have already been preyed upon.

　　1. The primary purpose of the passage is to

　　A：question the validity of research on nest-guarding behavior in long-tailed skinks

　　B：consider explanations for a finding regarding long-tailed skinks

　　C：discuss the importance of homing for long-tailed skinks

　　D：describe the relationship between clutch size and homing success in long-tailed skinks

　　E：identify the benefits of a behavior common among long-tailed skinks

　　答案：B

　　2. The claim in the highlighted sentence assumes which of the following about the individuals that managed to find their way home from each distance?

　　A：They were less able to detect egg-eating predators than were the other long-tailed skinks studied.

　　B：They were more averse to risk than were the other long-tailed skinks studied

　　C：They expended less energy when homing than did the other long-tailed skinks studied.

　　D：They did not possess better homing skills than did the other long-tailed skinks studied.

　　E：They had significantly smaller clutches than did the other long-tailed skinks studied.

　　答案：D

　　3. The "second possibility" implies which of the following as a possible explanation for the female long-tailed skinks that failed to home from distances over 50 meters ?

　　A：They had relatively small clutches

　　B：They were unable to find their way home

　　C：They lacked sufficient energy to home successfully

　　D：They had male long-tailed skinks guarding their clutches

　　E：They detected evidence of egg-eating snakes In the vicinity of their nests.

　　答案：A

更多GRE备考资料下载请点击这里

　　以上就是新东方在线GER频道为你带来的GRE阅读模拟练习题，更多精彩敬请关注新东方在线GRE频道。


本文关键字: GRE阅读 gre阅读练习题

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
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