四川省眉山市2014
高考英语阅读理解、完形填空专题训练（9）附答案 阅读理解 any observant people have noticed that a wild animal will allow a man or other potential enemy to approach only up to a given distance before it escapes.“flight distance” is the terms used for this interspecies spacing.as a general rule，there is a positive relationship between the size of an animal and its flight distance—the larger the animal，the greater the distance it must keep
