Question

【题目】根据短文理解，选择正确答案。
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 12 days 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 12 days 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（挑衅地） 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.
（1）What is the article mainly about?
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.
（2）According to the article, people used to believe that _______.
A.fish could only remember part of their past experiences
B.fish could remember things that happened 12 days ago
C.a fish's memory lasted for only seven minutes
D.fish didn't recognize any of their friends
（3）How can fish benefit most from a good memory? They can remember _______.
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
（4）Which of the following is TRUE according to the passage?
A.Fish behave aggressively in a fight.
B.Fish can remember more.
C.Fish don't belong to the list of smart animals.
D.Only African cichlids have a good memory.

Answer 1

【答案】
（1）B
（2）D
（3）A
（4）B
【解析】人们普遍认为鱼的记忆力只有七秒。 本文讲述了一项新的研究发现，鱼的记忆力比我们过去认为的要好得多，某些种类的鱼甚至可以记住12天前的事件。

⑴主旨大意。根据第二段第二句A new study has found that fish have a much better memory than we used to think.（一项新的研究发现，鱼的记忆力比我们过去认为的要好得多）；根据文章最后一段But this study has given scientists a new understanding of their intelligence.（但是这项研究使科学家们对他们的智力有了新的认识。）可知“鱼比我们认为的聪明”是文章的大意。故选B

⑵细节理解。根据第一段中they don't recognize you or any of their friends可知，他们不认识你或他们的任何一个朋友。故选D。

⑶细节理解。根据第四段最后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. （他们发现，休息这么长时间的鱼还能回到第一次得到食物的地方。这表明他们可以记住他们过去的经历。）可知，他们知道在哪里能得到食物和生存。故选A。

⑷推理判断。根据第五段最后一句But until the latest findings, there was no clear evidence.（至今没有清晰的证据。）故排除A；根据最后一段For a long time, But this study has given scientists a new understanding of their intelligence. （很长时间，鱼被放置在远远低于黑猩猩，海豚和老鼠的名单上，但是这项研究使科学家们对他们的智力有了新的认识。）故排除C；根据第五段第一句African cichlids might have a good memory. （African cichlids可能有一个好的记忆，但并未说只有African cichlids才有好的记忆。）only太绝对，故排除D。纵观全文，又根据第二段第二句A new study has found that fish have a much better memory than we used to think.选故B