Just as a good memory can make our lives easier, it also plays an important part when a fish is trying to survive in the wild.

　　“If fish are able to remember that a certain area contains safe food, they will be able to go back to that area without putting their lives at risks,” lead researcher Trevor Hamilton told Live Science.

　　For a long time, fish were placed far below chimpanzees, dolphins and mice on the list of smart animals. But this study has given scientists a new understanding of their intelligence.

　　1、What is the article mainly about?

　　Fish having very bad memories.

　　Fish being smarter than we thought.

　　How fish improve their memory.

　　What we can learn from fish.

　　2、According to the article, people used to believe that _______.

　　fish could only remember part of their past experiences

　　fish could remember things that happened 12 days ago

　　a fish’s memory lasted for only seven minutes

　　fish didn’t recognize any of their friends

　　3、How can fish benefit most from a good memory? They can remember _______.

　　where to get food and survive

　　their enemies and fight

　　where to escape to when in danger

　　their friends and help each other

　　4、Which of the following is TRUE according to the passage?

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