题目内容

1.It's a popular belief that a fish's memory lasts for only seven seconds.It may seem sad to think that they don't remember what they've eaten or where they've been,and they don't recognize you or any of their friends---every moment in their life would be like seeing the world for the first time.
But don't be so quick to feel sorry for them.A new study has found that fish have a much better memory than we used to think.In fact,certain species of fish can even remember events from as long as 12days ago.
In the study,researchers from MacEwan University in Canada trained a kind of fish called African cichlids to go to a certain area of their tank to get food.They then waited for 12days before putting them back in the tank again.
Researchers used computer software to monitor the fish's movements.They found that after such a long break the fish still went to the same place where they first got food.This suggested that they could remember their past experiences.
In fact,scientists had been thinking for a long time that African cichlids might have a good memory.An earlier study showed that they behaved aggressively in front of certain fish,perhaps
because they remembered their past"fights".But until the latest findings,there was no clear
evidence.
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.

33.What is the article mainly about?B
A.Fish having very bad memories.
B.Fish being smarter than we thought.
C.How fish improve their memory.
D.What we can learn from fish.
34.According to the article,people used to believe thatD.
A.fish could only remember part of their past experiences
B.fish could remember things that happened 12days ago
C.a fish's memory lasted for only seven minutes
D.fish didn't recognize any of their friends
35.How can fish benefit most from a good memory?They can rememberA.
A.where to get food and survive
B.their enemies and fight
C.where to escape to when in danger
D.their friends and help each other.

分析 以前人们都认为鱼类的记忆只能保持7秒钟,但是实验表明其实它们可以有长达12天的记忆,要比以前人们想的更聪明.

解答 33.B  主旨大意题.以前人们都认为鱼类的记忆只能保持7秒钟,但是实验表明其实它们可以有长达12天的记忆,要比以前人们想的更聪明,故选B.
34.D 细节理解题.根据第一段中的"they don't recognize you or any of their friends"可知,以前人们认为鱼认不出它们的任何朋友,故选D.
35.A 细节理解题.根据倒数第二段中的"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"可知,如果鱼有记忆,就能够记得哪个地方有安全的食物,故选A.

点评 阅读理解题测试考生在阅读基础上的逻辑推理能力,要求考生根据文章所述事件的逻辑关系,对未说明的趋势或结局作出合理的推断;或根据作者所阐述的观点理论,对文章未涉及的现象、事例给以解释.考生首先要仔细阅读短文,完整了解信息,准确把握作者观点.

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