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题文

The natural world is colorful with humans,plants and animals showing different colors.

    Human skin can be many different colors and it changes.with the sun,our feelings or our health for example.This is because of pigments(色素),which reflect light and make what the eye sees as colors.So,when we feel excited or angry,our heart can send more blood to the face and the pigments in the skin become red.This is why we have the expression that someone. "sees red"when they are angry.

    Plants also have pigments.Color is important for them to live on.The bright colors of flowers catch the attention of insects(昆虫),which then carry their pollen(花粉)from one flower to another.Bees can see colors we cannot,and they follow these to the inside of the flower.Without bees visiting flowers in this way,many plants would die out.

    Animals also use color for their own need.They protect themselves with different colors so as not to be seen by predators.The snowshoe hare for example,a type of wild rabbit,changes color with seasons for this reason.During summer it is a brown color,and in winter it is white so that it can hide in the snow.However,some animals use color as a warning to make predators stay away.Bright colors such as yellow and red are often used in this way.Nature,however,is very clever,and predators also use colors to attract(吸引)the animals they feed on..

    So,we can see that there may be many different reasons and uses for colors in the natural world.Some uses of color in nature remain unknown;but one thing is for sure,color not only makes our planet beautiful but it is also necessary for our planet to live on.

(1)Paragraph 2 mainly tells us that     is/are the cause that makes human skin change color.

A.feelings

B.pigments

C.Blood

D.sunshine

(2)According to Paragraph 3,plants can use     to attract insects.

A.leaves

B.fruits

C.pollen

D.color

(3)The underlined word"predators""in Paragraph 4 refers to animals which    .

A.hide in secret places

B.kill other animals for food

C.change color with the sun

D.protect themselves from danger

(4)What is the main purpose of the passage?    

A.To describe animals' ways of life.

B.To encourage us to study color in nature.

C.To introduce the uses of colors for life on earth.

D.To explain the importance of protecting our planet.

科目 英语   题型 阅读理解   难度 中等
知识点: 综合型 科普知识类阅读
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相关试题

Mary 09:45:10
Hi, Jim. Nice to meet you! I’m a girl. My name is Mary Green. My favorite (最喜爱的) color is red. My telephone number is 873-3516.
Jim 09:46:05
Hi, Mary. Nice to meet you, too! I’m a boy. My name’s Jim Hand. My favorite color is blue. And my telephone number is 894-2015.
根据以上两位好朋友在网上的聊天记录,选择最佳选项。
Mary likes (喜欢) ________.

A.Red B.Green C.Blue D.Black

The girl’s last name is ______.

A.Mary B.Green C.Red D.Yellow

The boy’s first name is _______.

A.Jim B.Mary C.Black D.Green

Jim’s telephone number is _______.

A.837-2015 B.873-3516 C.894-3516 D.894-2015

The two kids (小孩) are on line (在网上) ________.

A.in the morning B.in the afternoon
C.in the evening D.at night

阅读下面的材料,根据材料的内容,选择正确答案填空。
Tigers are strong and dangerous animals. But now they are in danger.
In the past, there were eight kinds of tigers in the world. But during the 20th century, only five were left. The number of Siberian tigers (东北虎) was about 300, but now it is less than 22. They’re in danger of dying out. If the government does nothing, we won’t be able to see them in ten to twenty years.
In order to stop people from hunting and killing wild tigers, and in order to make wild tigers more, the World Wildlife Fund (世界自然基金会) has started a program (项目) recently (最近). China and twelve other countries joined it.
However, it’s not enough. Remember that nature is a food chain (链). If we hurt and kill too many wild deer and pigs, wild tigers will die out because of hunger (饥饿). So the most important thing is to save the animals that tigers eat. In order to protect the wild tigers, we need call on (号召) more people to stop eating, hunting and killing wild animals.
根据短文内容,选择正确答案。
During the 20th century, _______ kinds of wild tigers were left.

A.3 B.5 C.8 D.20

The number of the wild Siberian tigers reduced (减少) about _______.

A.5% B.22 C.93% D.30%

Wild tigers will be in danger of dying out without _______.

A.pigs B.deer C.people D.A and B

Which of the following statements is NOT true?

A.There are less than 22 wild Siberian tigers now.
B.There are twelve countries in the World Wildlife Fund.
C.Wild tigers mainly feed on pigs and deer.
D.It’s our duty to protect the wild tigers.

The passage mainly tells us _______.

A.why and how do we protect the wild tigers
B.the government does everything they could to protect the wild tigers
C.the wild tigers will die out in ten to twenty years
D.the most important thing is to save the animals that tigers eat

Ann’s Sports Timetable

Activities
Time
go to the gym
6:00 a.m. -7:00 a.m. every day
play table tennis
4:00 p.m. -5:30 p.m. Wednesday afternoon and Friday afternoon
go bicycling with Mike and Tony
5:30 p.m. -6:30 p.m. Saturday afternoon
go hiking with her classmates
9:00 a.m.-11:30 a.m. Sunday morning

Ann often on Sundays.
A.plays table tennis
B.goes hiking
C.goes bicycling
Mike goes bicycling .
A.with Tony and Ann
B.alone
C.with his brothers
How long does Ann stay in the gym every day?
A.One hour. B.30 minutes. C.2 hours.
—Does Ann play table tennis ? —Yes, she does.
A.once a week
B.twice a week
C.three times a week
Ann doesn’t do sports on afternoon.
A.WednesdayB.FridayC. Monday

两篇根据短文内容,从每小题A、B、C三个选项中选出一个最佳答案。
Do you like to play the game Angry Birds? Maybe your answer is yes. As a kind of online game, it’s popular with people of all ages. It’s really an interesting game. But do you know there will be a lot of Angry Birds-themed activity parks around the world?
The first two parks opened in Finland in 2012, and a few other parks are going to open in the UK. However, people still don’t know when and where Angry Birds-themed activity parks will open.
Angry Birds-themed activity parks have many interesting places for children to play. They like them very much. People can see the characters (人物) and colors from the game in the park. People can also play the Angry Birds game on large screens in the park.
Peter Vesterbacka is an officer of Angry Birds Company. The company wants to invite people to go out and have fun in Angry Birds-themed activity parks.

Angry Birds is a _______.
A. game B. story C. film
Angry Birds is popular with _______.
A. children B. boys C. people of all ages
How many Angry Birds-themed activity parks opened in Finland in 2012?
A. One. B. Two.C. Three.
What does Peter Vesterbacka do?
A. He is a postman.
B. He is an officer.
C. He is a scientist.
Which of the following is Not true?
A. Angry Birds is very interesting.
B. There are large screens in Angry Birds-themed activity parks.
C. Angry Birds-themed activity parks will open in China in 2015.

A friend, Jack asks me to have dinner with him. He has a very beautiful big house. He is rich and famous. He always likes to help others.
On that day, he tells me a story about a boy and his dream.
A boy is sitting in the classroom. He is thinking about his teacher’s words. Miss Brown asks her students to write about what they want to be and to do when they grow up. The boy writes down his dream. He wants to be a rich and famous man when he grows up. He would like a big house. He also wants to help poor children to go to school.
Thirty years goes. There are a lot of difficulties on his way to success(成功), but the boy never forgets his dream .Now it comes true.
“You’re standing in the boy’s big house. You know, the boy is me.” my friend, Jack says.
根据短文内容,判断下列句子是否正确,对的涂(A),错的涂(B)。
The writer has lunch with his friend, Jack.
Miss Brown asks the students to be rich and famous.
Jack never gives up his dream and tries hard to do for it.
There was nothing much difficult on his way to success.
Jack’s dream comes true and he is successful.

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