Previous research by scientists from Keil University in Germany monitored Adelie penguins and noted that the birds’ heart rates increased dramatically at the sight of a human as far as 30 meters away.

　　But new research using an artificial egg, which is equipped to measure heart rates, disputes this.

　　Scientists from the Scott Polar Research Institute at Cambridge say that a slow moving human who does not approach the nest too closely, is not viewed as a threat by penguins.

　　The earlier findings have been used to partly explain the 20 per cent drop in populations of certain types of penguins near tourist sites.

　　However, tour operators have continued to insist that their activities do not adversely affect wildlife in Antarctica, saying they encourage non-disruptive behavior in tourists, and that the decline in penguin numbers is caused by other factors.

　　Amanda Nimon of the Scott Polar Research Institute spent three southern hemisphere summers at Cuverville Island in Antarctica studying penguin behavior towards humans.

　　“A nesting penguin will react very differently to a person rapidly and closely approaching the nest,” says Nimon.

　　“First they exhibit large and prolonged(延长) heart rate changes and then they often flee the nest leaving it open for predators (掠夺者) to fly in and remove eggs or chicks.”

　　The artificial egg, specially for the project, monitored both the parent who had been ‘disturbed’ when the egg was placed in the nest and the other parent as they both took it in turns to guard the nest.

【江苏省2014届高三英语一轮复习 阅读理解攻略训练（11）】相关文章：

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (77)

★ 【浙江专用】2014届高考英语一轮复习课时作业(三十六)选修8Unit 1《A land of diversity》

★ 2017届高考英语二轮复习课时训练：8（含解析）

★ 2017届高考英语二轮复习大题冲关秘籍完形填空之夹叙夹议文：考纲分析（含解析）

★ 四川省广安市2014高考英语一轮基础训练题（9）及答案

★ 【北京专用】2014届高考英语一轮复习方案课时作业：选修6 Unit 3 A healthy life

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (14)

★ 重庆市2014高考英语阅读理解一轮（精品）训练题（21）附答案

★ 【北师大版】2014届高考英语一轮复习指导课时作业：Unit 9 A卷 Word版含解析

★ 湖南省长沙县实验中学2016届高三英语二轮复习书面表达复习重点话题指导专题22 自然灾害话题指导（教师版）