资源看点：该资料专为2011年湖南高考新题型而设计的，适合高三学生平时使用。

I: Directions: Read the following passage. Fill in the numbered blanks by using the information from the passage.
 “Humans have a code of ethics (行为规范) ,” says Marc Bekoff, an animal behavior expert at the University of Colorado. “If I don’t play in a certain way, you won’t play with me. Some animals have the same code”
Scientists recently discovered that animals which live in groups, such as elephants, foxes and wolves are especially likely to follow rules. If they don’t, and each does its own thing, the group might break apart. Group members would be forced to live alone. Then they’d have a harder time hunting and raising their young.
That’s probably why a traveling wolf pack stopped and waited to let its slowly moving leader catch up. Similar social ties may have caused a captive elephant to save her friend from drowning. Selfish reasons certainly motivated the male fox, who wanted to keep playing.