游客
题文

When we have small cuts in the skin (皮肤), something strange may happen. The cuts are able to heal (痊愈) themselves in a couple of days. How does this happen? Read on, and you will find out the secret.
Every living thing on the earth is made up of cells (细胞). Cells grow and make new cells. Most cells are very tiny and we can’t see them with our eyes. Different cells have different uses. Our skin cells are special ones. The cells on the surface (表面) of our skin are old dead cells. New skin cells are right under the surface. These are the living skin cells. They do work for our bodies. They help protect our bodies and heal cuts.
Our bodies make skin cells all the time. As the old cells fall off, new cells grow in the same place. Each person makes about 18 kg of skin cells during his or her life. Surface skin cells fit together closely with no gaps between them. When you cut or burn yourself, you can harm your skin cells. A small cut will not do much harm. Your skin will quickly heal itself by making new skin cells. How do skin cells work? First, the cells near the cut get bigger and move into the gap. Next, these bigger cells meet in the middle. They form a new layer (层) of skin cells. Finally, new cells will grow until the gap disappears completely. In this way, your skin can grow and get well itself.
How amazing the tiny cells are! Next time you have a cut, don’t worry about it. Maybe in a few days, you will be surprised to find it healed.
The underlined word “gaps” in the passage means “_________” in Chinese.

A.突起 B.条纹 C.缝隙 D.代沟

From the passage, we know that cells_________.

A.are large and we can see them with our eyes
B.can grow and make new cells
C.aren’t in most living things
D.can’t grow and make new cells

Skin cells heal cuts in three steps. _________is the right order.

A.a→b→c B.b→c→a C.a→c→b D.b→a→c

Which of the following is TRUE according to the passage?

A.Each person can make 18 kg of skin cells every day.
B.Different cells have different uses in our bodies.
C.The skin cells have little work to do in the body.
D.Every living thing on the earth is made up of skin cells.

The best title for this passage should be_________.

A.How skin cells heal cuts
B.The importance of skin
C.How to protect our fingers
D.The importance of cells
科目 英语   题型 阅读理解   难度 中等
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相关试题

阅读下列短文,从每题所给的ABC三个选项中选出最佳答案。

Catia, a 73-year-old woman, is a hummingbird(蜂鸟)nurse. Her story with hummingbirds began in 2011, at a very difficult time in her life.

She lost her husband in 2009. Two years later, she herself got cancer(癌症). To fight against her illness, she sold her five shops but it didn’t help much. So she felt depressed.

One day, she was walking on the street when she noticed a tiny hummingbird with a serious eye problem. The kind woman took it home and named it Gucci. At first, she knew nothing about taking care of a bird. To look after Gucci, she studied the birds and their habits. Finally, Gucci got well.

Later, Catia’s friends began to bring her sick and homeless hummingbirds. She never turned them away. Then, more and more hummingbirds were sent to her. So she used her apartment as a hospital and Safe House for them. Since then, her home has been a hummingbirds’ home.

Now Catia is considered as an expert on hummingbirds and lives happily with hummingbirds. People think she is a protector of hummingbirds, but she thinks it is the tiny birds that save her. She told others the hummingbirds managed to pull her out of sadness and hopelessness. She always says, “The hummingbirds wrote me a new life.”

(1)When did Catia get cancer?

A.

In 2007.

B.

In 2009.

C.

In 2011.


2What does the underlined word “depressed” in paragraph 2 mean?

A.

Bored.

B.

Down.

C.

Angry.


3What is the correct order of the following events?

①Catia lost her husband.

②Catia is considered as an expert.

③Catia’s home has been a hummingbirds’ home.

④Catia helped a hummingbird with an eye problem.

A.

①④③②

B.

②③④①

C.

④③②①


4What is the main idea of the text?

A.

It’s important to protect animals.

B.

We should face difficulties bravely.

C.

Helping animals is helping humans.

阅读下列短文,从每题所给的ABC三个选项中选出最佳答案。

Volunteers Wanted

Do you want to have a meaningful summer holiday? Do you hope to protect our environment? Come and join us!

We want you to help us:

Age: 12 years old and above

Date: July 10th—July 15th

If you are in good health and interested in our activity, please call us at 0813-8866012 or e-mail us at volunteer@qq.com.

1What do the volunteers need to help?

A.

Plant flowers in the park.

B.

Make and give out posters.

C.

Clean the office in our community.


2If Dave wants to become a volunteer, he must ________.

A.

be healthy

B.

be under 12 years old

C.

be free before July 10th


3Where can the text be found?

A.

In a storybook.

B.

In a newspaper.

C.

In a travel magazine.

阅读下列短文,从每题所给的四个选项(ABCD)中,选出最佳选项。

①Plants have roots, leaves, and flowers. They have seeds(种子), too. New plants grow from seeds. Some seeds fall on the ground. New plants grow next to the old plants. When plants grow this way, they are too crowded to get enough sunshine and water. So some of them die. But some plants spread their seeds even far from where they live. These seeds grow in new places. There are many ways of the seeds’ travel.

②The wind helps seeds to travel. Some plant seeds have little wings. When the wind blows, the seeds fly away. Soon they fall to the ground and new plants may grow there. Some plants dry up. The wind pulls them from the ground, but they are so big that they can’t fly. They roll along the ground, dropping off their seeds.

③Other plants grow near the water. Their seeds drop into the water and go away with it. They may travel many miles before they stop.

④Some seeds have special parts called “stickers”. The stickers help the seeds travel far. How? These seeds wait for an animal to walk by. Then they stick into its fur to get a free ride. Sometimes it’s a long trip. Birds carry some plant seeds to new places, too.

⑤Seeds can’t walk. They can’t run. But they can travel with the help of wind, water and animals.

(1)What will happen if new plants are crowded?

A.

Some of them will travel.

B.

Some of them will die.

C.

Some of them can grow taller.

D.

Some of them can live better.


2The underlined word “them” refers to ________.

A.

Wings.

B.

Seeds.

C.

Plants.

D.

Birds.


3What can help the seeds to travel according to the text?

A.

Leaves, roots and flowers.

B.

Birds, stickers and wings.

C.

Wind, water and other plants.

D.

Animals, water and wind.


4Which can be the best title for the passage?

A.

The growth of the plants.

B.

The kinds of the seeds.

C.

The parts of the plants.

D.

The travel of the seeds.


5What’s the structure of the passage?

A.

B.

C.

D.

阅读下列短文,从每题所给的四个选项(ABCD)中,选出最佳选项。

Li Fang is an engineer during the day, but in the evening, she becomes a student at a night school in Chengdu, Sichuan Province. She is trying new hobbies with her 4-year-old daughter, including art and jazz dancing. She used to spend evenings watching her daughter play in the park. Now, she can experience new things together with her daughter at a night school.

A growing number of Chinese people go to night schools. They can get colorful courses from dancing and sports to wine tasting. These courses usually cost hardly anything. They have become popular among young people who want to look for new skills, hobbies and friends.

In the 1980s, many people studied at night schools for middle school courses. However, night schools disappeared because of the popularization of higher education. The latest fashion came to Shanghai last autumn, when more than 650,000 people competed for 10,000 places at the city’s night schools.

Night schools have also rapidly appeared in other cities. Miss Wang in Wuhan thinks night schools are good places to make friends. “I used to spend much of my time alone. Since I attended the night school, І have felt more connected with modern society. Besides, chatting to people with similar hobbies is a lot of fun,” she said.

Young people strongly wish to improve themselves and make their cultural lives colorful. That has made night schools popular.

(1)What did Li Fang use to do in the evening?

A.

Watch her daughter play.

B.

Experience new hobbies.

C.

Try new things.

D.

Learn jazz dancing.


2How much does it cost if young people go to night schools?

A.

A little.

B.

Much.

C.

Little or nothing.

D.

Too much.


3According to the numbers “650,0000” and “10,000”, we can infer _______.

A.

there are more young people

B.

there are more night schools

C.

the night schools are very popular

D.

the night schools are only in Shanghai


4What does Miss Wang think of the night schools?

A.

Good places to connect with society.

B.

Good places to spend time alone.

C.

Good places to take up hobbies.

D.

Good places to chat with old people.


5Why do young people attend the night schools?

A.

To make friends.

B.

To taste wine.

C.

To do sports.

D.

To improve themselves.

阅读下列短文,从每题所给的四个选项(ABCD)中,选出最佳选项。

Li Jin was born in Guangxi but raised in Sanya, Hainan. In the past 9 years, Li has made great efforts to protect the waters of Sanya. He is now spreading the knowledge of environmental protection. He does this through the Internet.

Around 2014, he began doing volunteer work to clear rubbish from the beaches and officially registered as a volunteer in May, 2017. Li took the lead in a clean-up activity on the Sanya River. In April, 2021, he used his own money to set up a volunteer service center. The center has 1,170 registered members who take part in all kinds of activities.

So far, he has spent about 3, 800 hours on volunteer activities in over 550 events. More than 2,300 people have joined in the activities with his encouragement. They have drawn the attention of both adults and children to the importance of protecting oceans and beaches. His center has organized 51 beach-cleaning activities which have seen about 1,800 people join in since it was set up.

In 2021, because of Li’s growing influence in environmental protection circles, the city government invited him to make a number of short videos. In the videos, he used simple words to explain how to protect the environment. Several of the videos have been watched millions of times.

“Although many people speak highly of my work, what I have done is not for the compliment. I just want to make a difference to environmental protection. My volunteer work would be meaningless if I was paid. It is everyone’s duty to protect environment. The work itself is of great value, so I will continue doing the environmental protection work,” he said.

1How does Li Jin spread the knowledge of environmental protection?

A.

On TV.

B.

In the newspaper.

C.

Through the Internet.

D.

By poster.


2How many people joined beach-cleaning activities since Li Jin set up the center?

A.

Over 550.

B.

About 1,800.

C.

More than 2,300.

D.

About 3,800.


3What is the right order of the following events according to the passage?

①set up a volunteer service center

②made a number of short videos

③began to clear rubbish

④took the lead in a clean-up activity

A.

①③④②

B.

①④③②

C.

③①④②

D.

③④①②


4The underlined word “compliment” means__________.

A.

wealth

B.

praise

C.

fame

D.

power


5Which word can best describe Li Jin?

A.

Responsible.

B.

Wise.

C.

Kind.

D.

Busy.

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