1. What is the main topic of the passage? 
　　　 A) Animal shelter.
　　　 B) Animal colonies.
　　　 C) Animal behaviour.
　　　 D) Animal intelligence.

　　2. What does the word “schools” in the last sentence of paragraph 2 mean in the passage? 
　　　 A) Class.
　　　 B) Group.
　　　 C) College.
　　　 D) Part.

　　3. Which of the following statements is true? 
　　　 A) The more intelligent the animals are, the more complex colonies they build.
　　　 B) The less intelligent the animals are, the less complex colonies they build.
　　　 C) All animal societies tend to build shelter.
　　　 D) It is a kind of social behaviour that parents protect their children.