游客
题文

Have you ever wondered why birds sing? Maybe you thought that they were just happy.  After all,you probably sing or whistle when you are happy.
Some scientists believe that birds do sing some of the time just because they are happy. However,they sing most of the time for a very different reason. Their singing is actually a warning to other birds to stay out of their territory.
Do you know what a ’territory’ is? A territory is an area that an animal,usually the male,claims(声称)as its own. Only he and his family are welcome there. No other families of the same kind are welcome. Your garden and house are your territory where only your family and friends are welcome. If a stranger should enter your territory and threaten(威胁)you,you might shout. Probably this would be enough to frighten him away.
If so,you have actually scared the stranger away without having to fight him. A bird does the same thing. But he expects an outsider almost any time,especially at nesting(筑巢)season. So he is screaming all the time,whether he can see an outsider or not. This screaming is what we call a bird’s song,and it is usually enough to keep an outsider away.
Birds sing loudest in the spring when they are trying to attract a mate and warn others not to enter the territory of theirs..
You can see that birds have a language of their own. Most of it has to do with attracting mates and setting up territories.
Some scientists believe that most of the time bird’s singing is actually _______.

A.away of warning B.an expression of happiness
C.an expression of anger D.away of greeting

What is a bird’s "territory"?.

A.A place where families of other kinds are not accepted.
B.A place where a bird may shut at the top of its voice
C.An area for which birds fight against each other.
D.An area which a bird considers to be its own.

Why do birds keep on singing at nesting season?

A.Because they want to invite more friends.
B.Because they want to find outsiders around.
C.Because their singing helps frighten outsiders away.
D.Because their singing helps remove their fears.

How does the writer explain bird’s singing?

A.By comparing birds with human beings. B.By reporting experiment results.
C.By describing birds’ daily life. D.By telling a bird’s story.
科目 英语   题型 阅读理解   难度 中等
知识点: 说明文
登录免费查看答案和解析
相关试题


Club(俱乐部) One
Open hour: 5:00 p.m.—6:30 p.m.
Day: Monday—Friday
Activities: Beijing opera (京剧), playing the lute (琵琶)
Age: 8 to 12
Telephone: 88830401
Club Two
Open hour: 5:30 p.m.—6:30 p.m.
Day: Thursday and Friday
Activities: Making cards, drawing pictures
Age: 12 to 16
Telephone: 88930501
Club Three
Open hour: 4:50 p.m.—6:00 p.m.
Day: Thursday
Activities: Computers, dancing
Age: 10 to 13
Telephone: 88730401
Club Four
Open hour: 3:00 p.m.—4:50 p.m.
Day: Monday—Friday
Activities: Making cakes, singing
Age: 15 to 17
Telephone: 88940302

_______ is the best for you if you have time from 3:00 to 5:00 in the afternoon.

A.Club One B.Club Two
C.Club Three D.Club Four

You can call _______ if you like Chinese music very much.

A.88830401 B.88930501 C.88730401 D.88940302

Jane can learn to _______ if she is 17 years old.

A.make cards B.play the lute
C.make cakes D.draw pictures

_______ is open for the longest (最长) time in a day.

A.Club One B.Club Two
C.Club Three D.Club Four

Where can you read the passage(文章)?

A.In the school library. B.In a storybook.
C.On clubs’ walls. D.In an English book.

Food is colorful. Some food is green, some food is red, and some is black. Now more and more people like to have black food—black rice, black beans, black grapes. Why do they like black food?
· Black food can make grey hair into black hair.
· Black food is good for the heart.(心脏)
· Black food can help children become smart.
· Black food can also help women look young.
Black food is very good, but we need food with different colors. Doctors say that it isn’t good to be choosy about food. So we had better eat all kinds of food.
Now more and more people like to have _______.

A.red food B.green food C.black food D.rice

Black food is good for________ .

A.eyes B.ears C.nose D.heart

A seven-year-old boy often has black food, so he can become ________.

A.smart B.young C.old D.tall

_______ is good for our health.

A.red food B.green food
C.black food D.Food with different colors

The underlined word ‘choosy’ means “_______ ” in Chinese.

A.优选的 B.挑剔的 C.浪费的 D.无色的

Four girls go to school every day by taxi. One day one of the girls says, “There is a test this morning. Let’s get to school late. Then we will not have the test.”
“What can we tell the teacher?” One of the girls says. “He will be angry. We will need a good excuse.”
The girls think for a moment, then one of them says, “Let’s tell him that our taxi has a flat tire(瘪胎).”
“That’s a good idea,” the other girls say. “We will tell him that.”
They get to school an hour later. The test is over. “Why are you late? You missed the test."
"Our taxi had a flat tire." One of the girls said.
The teacher thought for a moment, then he said, "sit down, One of you in each corner of the room." The four girls do this.
Then the teacher says, “Write down a piece of paper the answer to this question: Which tire is flat?”
How do the girls go to school every day?

A.By bus B.By taxi C.By bike D.On foot

Why do the girls want to go to school so late?

A.They don’t like school.
B.They want to go shopping.
C.They don’t finish their homework
D.They don’t want to take a test.

what is the girls’ excuse for being late?

A.They get up late.
B.They can’t get a taxi.
C.Their taxi has a flat tire.
D.They forget(忘记) the time

Can the girls answer the teacher’s question?

A.No, they can’t. Because they can’t remember which tire is flat.
B.Yes, they can. Because there is a flat tire.
C.No, they can’t. Because they may give a different answer.
D.Yes, they can. Because all four tires are flat.

What can we know from the text?

A.They find a good excuse.
B.The teacher is very clever.
C.There is a flat tire.
D.They don’t like to go to school by bike.

Henry is a naughty boy in Bayern, Germany. He has big eyes and a small mouth. One day, Henry is playing in front of a house. A woman comes up. She has small eyes. And she asks Henry, “Little boy, is your mother at home?”
“Yes, she is.” answers the boy. And Henry goes on playing happily.
Then the woman goes over to ring the bell. The bell rings and rings, but no one comes to open the door. The woman gets angry and calls out to him, “ You tell me your mother is at home, don’t you?”
“Yes,” the boy answers. “My mother is at home, but this isn’t my home.”
Then the woman stares at (睁大眼睛看) Henry. The boy says, “You have big eyes, too!”
One day, Henry is playing __________ .

A.in the park B.in the street
C.in front of a house D.in front of a shop

The woman wants to see __________ .

A.Henry himself B.Henry’s father
C.Nobody D.Henry’s mother

The woman goes over to __________ after talking with Henry.

A.knock at the door of the house
B.give a call to his mother
C.ring the bell of the house
D.ask his mother some questions

The woman gets __________ because no one comes to open the door.

A.pleased B.happy C.afraid D.angry

In the story the woman doesn’t find Henry’s mother because __________ .

A.she doesn’t know Henry’s mother
B.Henry is not at home.
C.Henry doesn’t have a mother
D.she goes to the wrong house

How do most students spend their weekends? Do they have time to do the things they like? Let’s see what some students do during their weekends.
Ben is eleven. He has a sister, Kate. Both of them like going to the cinema. Every Sunday morning, they go to the town by train and then they go to the cinema because they live in a village (农村) and there is no cinema there.
They get to the town at noon. They usually have a big lunch in their favourite restaurant first, and then they buy some food in the supermarket before they go to their favourite cinema called Star Cinema. They like it because the seats there are comfortable and the films in the cinema are always the newest. They always have a good time on Sundays. But when the weather is bad or they are busy with their homework or someone visits them, they can’t go to the cinema.
Ben and Kate always spend their Sundays ________.

A.watching TV B.going shopping
C.doing homework D.seeing films

They go to the town to see a film because ________.

A.they like the cinema there
B.there is no cinema in the village
C.they don’t know other cinemas
D.they want to go shopping in the town

When they are in the town, they ________ first.

A.go to the cinema B.buy food
C.have lunch D.play in the street

What does the underlined word “comfortable” mean in Chinese?

A.舒适的 B.新鲜的 C.美味的 D.流行的

Ben and Kate can’t go to the cinema when __________.

A.The weather is not good.
B.They have a lot of homework to do.
C.They have visitors at home.
D.All above.

Copyright ©2020-2025 优题课 youtike.com 版权所有

粤ICP备20024846号