It might be fun to use your smartphone, but be careful. Too much screen time may be harmful to your health.
First, it is bad for your eyes. A researcher called Sarah Hinkley says the problem comes from the blue light that the screen gives out. Looking at a smartphone for a long time can cause eye strain（劳损）, headaches and dry eyes. So it is a good idea to take a break every 15 minutes when you are working at a computer or using a smartphone.
Second, screen use can do harm to children’s brains. A new study shows that using screens too much can affect（影响） how children’s brains grow. If children use screens for more than one hour a day, they might have lower levels of white matter in their brains. White matter is a key to the development of language and reading skills. So it is wise to cut down the time of children using all kinds of screens.
Third, using screens too much will affect your sleep. According to a study, about 95% of the people between the ages of 13 and 64 use electronics before bed, especially the young people under 20. Doctors say that the light from those electronics at night may make you excited before you go to bed. Then it’s hard for you to get enough sleep. So you’d better turn off smartphones, TVs, and all other screens an hour before your bedtime.
To keep healthy, doctors and researchers strongly advise that you shouldn’t use screens for long hours.
1. The blue light from your screens can cause ________.| A．eyestrain | B．headaches | C．dry eyes | D．all of the above |
| A．take a break every 15 minutes | B．have lower levels of white matter |
| C．use screens too much before bed | D．are the people from 13 to 64 |
| A．Using smartphones for long hours does harm to your eyes. |
| B．A lot of screen time affects children’s brain growth. |
| C．The light from electronics at night may make you excited. |
| D．People of all ages mustn’t use electronics. |
| A．a science magazine | B．a travel diary | C．a guide book | D．a novel |
| A．The ways to keep healthy. | B．The harm of using screens too much. |
| C．The ways to use screens. | D．The advantages of using screens. |
相似题推荐
【推荐1】Parents like to share children’s photos in social medias. Some children think parents should respect children’s privacy. But others think it’s a way to show parents’ love.
Qian Bosi, 14
Parents should respect and protect their children’s privacy (隐私). Photos can show their kids’faces, places they’ve been to and other information. In these cases, parents can accidentally violate (侵犯) their kids’ privacy when sharing photos online. It’s not safe. Some people might use the photos for bad things. It’s hard to imagine what could happen. Parents should be more careful about this. Li Meiying, 14
Some parents like to share embarrassing photos of their kids online. For example, sometimes their kids are sleeping or crying in their pictures. But most kids don’t want these photos to be shared online. They may not care when they are little babies, but as they grow up, they might be upset about it. So to avoid hurting their children’s feelings, parents should ask for permission (允许) from their kids before sharing their photos online. He Meixi, 14
In my opinion, there’s nothing wrong about parents posting pictures of their babies online. It shows that they love their children – they just want to share pictures of their kids with their friends. It’s a convenient way for relatives who live far away to stay in touch with their family. And when these children grow up, they can find these pictures online and relive their childhood.
1. Where could people see this article?| A．In a university guidebook | B．In a newspaper | C．In a science book |
| A．Qian Bosi | B．Li Meiying | C．He Meixi |
| A．It’s not safe to post children’s privacy online. |
| B．Children will be upset about seeing their embarrassing photos online. |
| C．Nobody wants to see the children’s photos. |
| A．Two | B．Three | C．One |
| A．Li Meiying thinks parents needn’t get the permission from kids before sharing their photos. |
| B．Qian Bosi thinks parents can violate their children’s privacy when sharing photos online. |
| C．He Meixi believes sharing photos online is a good way for children to relive theirchildhood. |
【推荐2】①A new kind of desk with bike pedals (踏板) was invented in Mexico. Now, rows of the new desks are used in some schools.
②The bike desks are allowing students to power through their class work. While they are taking some light exercise, they can burn off fat. For students at a high school outside Monterrey, the desks offer benefits more than exercise.
③“When we’re physically active, it also helps us to behave well,” said a 13-year-old student. Now the bike desks are used in two classrooms, but the plan is to add them to all 21 classrooms step by step. Sanjuanita Garcia, the school’s head teacher, points to the bike desks’ benefits, especially for boys who are easily hurt because of being overweight.
④Mexico has a high obesity rate (肥胖率), with more than a third of its population dangerously overweight and more than 75% at a greater weight than is considered healthy. And as children age, many children’s weights keep increasing. A recent national study showed about 8% of children under 5 were overweight, which rose to almost 19% for kids 5-11 years old.
⑤Being overweight during early years causes a lot of dangers to children’s health, including increased risk of diabetes (糖尿病) and high blood pressure. Most children are influenced by weight problems in early life, and obesity in adulthood is known to contribute to heart disease and many other kinds of illnesses.
1. The passage is probably from the part of _________ in a newspaper.
| A．culture | B．health | C．business | D．education |
| A．the advantages to use bike desks |
| B．the importance of taking exercise |
| C．the reasons of getting overweight |
| D．the problems on children’s health |
| A．Telling stories. | B．Giving examples. | C．Listing numbers. | D．Raising questions. |
| A．To describe the high schools in Mexico. |
| B．To introduce how to use the bike desks. |
| C．To sell the new desks to other countries. |
| D．To explain why the bike desks are used. |
Doing chores is good or bad for children.
So many parents don’t know if they should give chores to their children. But I have no trouble with that. I tried to ask my children to do some simple chores when they were only three years old. They had two chores at first.
Making Me Coffee
This needed them to count out 8 spoons of coffee beans (豆) into a coffee grinder (研磨机); then grind them for 20 seconds (they had to count slowly to 20). Next, they should pour the coffee grinds into the basket; count out 8 cups of water and pour it into the machine.
As you can see, there was a math exercise behind. As they grew older, the chore (making coffee) would become more difficult.
Cleaning the Dishes
Cleaning the dishes needed three steps in our house. I let one of my children brush the dishes. The other one washed the dishes with water carefully. And I would dry and put away the dishes. Through the cleaning, they could learn how to work together. In order to make the chore interesting, I even wrote a song called “Keep the Washing Going!” My children always felt excited when they sang the song with me.
At 11 years old, they now do chores such as cleaning the floors, taking out the rubbish and giving the dog a shower every day. What makes me happy is that they can have fun when doing chores on their own.
1. The writer began to make her kids do chores when they were ________ years old.| A．2 | B．3 | C．8 |
| A．hobbies | B．team spirit. | C．math |
| A．By singing a song. | B．By working with the kids. | C．By counting the number. |
| A．Bad. | B．Interesting. | C．Strict. |
| A．It took 20 seconds to make a cup of coffee. |
| B．The writer’s children do the most chores at home. |
| C．The children can learn a lot from doing chores. |
【推荐1】Perhaps you’ve already watched or heard about Readers, a TV show that has recently become popular. It invites different people to read aloud on stage, as well as tell the touching stories about them. They can read everything, like poems, novels and letters.
Many people are fans of the show and begin to enjoy reading aloud at home. Now the show gives people a special place to read across China. Reading pavilions (亭子) are now in cities like Shanghai, Hangzhou and Xi’an.
The pavilion is quite small. Only one person can come into it each time. There is a microphone in it and it records people’s voices. Everyone can read anything they like for three minutes in the pavilion. The show will later pick some of the readers and invite them to read on TV.
People of all ages have come and read in the pavilion. “Reading should be just like singing and talking,” said Dong Qing, the hostess of the show. “We can actually express our deep feelings through reading aloud.”
“Both the TV show and the pavilion are promoting reading among the public (公众),” reported China Youth Daily. Quite a lot of people are more and more interested in reading. In fact, this is also what our country is trying to do now.
1. What is in a reading pavilion?| A．A telephone. | B．A microphone. | C．A tape recorder. | D．A camera. |
| A．To help ordinary people become superstars. | B．To help the TV show pick possible readers. |
| C．To teach people how to read aloud. | D．To help people express their feelings freely. |
| A．推动 | B．抵制 | C．拒绝 | D．描述 |
| A．people must pay to record their voices in the pavilion |
| B．few people are interested in the reading pavilion |
| C．the TV shows aims to encourage more people to read aloud |
| D．everyone can read for ten minutes in the pavilion |
【推荐2】Exercise is the best way to keep healthy. But not many people get enough exercise. Only 20% of Americans get 150 minutes of exercise every week. More than 80,000,000 Americans over 6 years old are not active (活跃的). Many US schools cut PE classes. Only 15% of schools have this class at least three days a week.
This year, the US National Institutes of Health (NIH) starts an important study. It will show the changes (改变) in a body after exercise. The NIH wishes to tell people that exercise is a kind of good medicine (药).
The study will run for six years. It studies a group of about 3,000 people. They are from the 11-year-olds to the old. Now the study show’s many nice changes in the body during and after exercise. And the study also shows that doing housework can be exercise. “Cutting the grass, cleaning rooms and washing the car—all of these are exercise,” says a scientist. “Exercise isn’t just playing basketball, soccer or volleyball.”
1. What do the first paragraph mainly tell us?| A．How to keep health y in our life. |
| B．Children under 6 years old are not active in their life. |
| C．Many US schools don’t have enough PE classes. |
| D．Most Americans don’t get enough exercise. |
| A．To tell people exercise is important. |
| B．To show people some useful exercise. |
| C．To ask students to do more exercise. |
| D．To ask people to start-doing housework. |
| A．It will run for half a year. |
| B．It only studies the middle school students. |
| C．It shows the body changes during and after exercise. |
| D．There are three hundred people joining in the study. |
| A．Cutting the grass. |
| B．Doing some cleaning in the house. |
| C．Doing the dishes in the kitchen. |
| D．Washing the car. |
For nature lovers, there will soon be new places to visit. China has announced the list of its first five national parks.
National parks are large areas of public land. They are designed for the protection of ecosystems. They give a safe home to local plants and animals. They help keep the air and water clean.
The five parks’ protected land area is 230, 000 square kilometers, covering nearly 30 percent of the key wildlife species(物种) in China. Each park has distinct features(鲜明的特征).
For example, Three-River-Source National Park, located(位于) on the Qinghai-Tibet Plateau, is the largest national park in China. Covering 190, 700 square kilometers, it is about 14 times the area of Yellowstone National Park in the United States. It is home to the sources(源头) of the Yangtze, Yellow and Lancang rivers. People call it “China’s water tower” .
Giant Panda National Park, on the other hand, connects panda habitats(栖息地) in Sichuan, Shaanxi and Gansu. There are more than 1, 600 wild giant pandas inside the park, accounting for(数量上占) more than 70 percent of the pandas in China.
China hopes the national parks will benefit the public. Nature observation(观察) activities will be held to help travelers learn about animals and plants. Local people living in the parks can also run eco-friendly businesses. In Three-River-Source National Park, more than 17 thousand local herdamen(牧民) have found jobs, such as park rangers(护林员) since 2016. Their yearly household incomes(年收入) have increased by an average of 21, 600 yuan.
A win-win situation has been realized between the ecological(生态的) protection of these areas and development.
1. What do you know about National parks from the passage?| A．They are good for the natural environment. |
| B．They are large areas of private land. |
| C．They give a safe home to plants and animals all over China. |
| D．They are designed for the protection of only animals. |
| A．covers 230, 000 square kilometers |
| B．is on the Qinghai-Tibet Plateau |
| C．is about 13 times the area of Yellowstone National Park in the United States |
| D．is home to the sources of the Yangtze, Yellow and Zhu rivers |
| A．is in Sichuan | B．covers 190, 700 square kilometers |
| C．has over 1, 600 wild giant pandas inside the park | D．has more than 60% wild giant pandas in China |
| A．how the national parks benefit the public | B．how to reach a win-win situation |
| C．Three-River-Source National Park | D．National parks and their advantages |
【推荐1】
| Do people actually like April Fool’s Day? This is what they said. | |
| Malisa | #1______ . It can be really good fun. love play tricks on people and I don’t mind if people play tricks on me. It’s one day of the year when we can be really silly and laugh happily. So I look forward to April 1st. |
| Johnny | #2________. It makes me a bit nervous. I keep thinking someone is about to play a trick on me. When 12 o’clock passes, I feel quite relieved that it’s finished for another year! |
| Phil | #3_______. We played tricks on each other and sometimes on the teacher. In fact, one year one of the boys at school put a bucket of water on top of the door and when the chemistry teacher came in, he got very wet! It was funny, but the boy got in big trouble! |
| Clare | #4_______. I remember putting plastic fried egg on my dad’s plate for breakfast as a trick. He decided to cut it up and pretend to eat it! Now I think some of the tricks are a bit silly and people can be a bit cruel playing tricks on their ‘friends’! |
| Mark | I hate April Fool’s Day. Last year people at work changed the sugar for salt, so we all put salt in our coffee! Then some joker in the company decided he wanted a day off and he did something to the computers so they wouldn’t work. It just wasn’t funny! I had lots to do and we all had to stop working and solve the problem. |
Word Bank
relieve使放心 pretend假装 trick 恶作剧：技巧
根据材料内容选择最佳答案。
1. Who don’t like April Fool’s Day?
| A．Johnny and Phil. |
| B．Johnny and Mark. |
| C．Phil and Clare. |
| D．Clare and Mark. |
| A．Both he and his teacher will laugh. |
| B．The teacher will play a trick on him, too. |
| C．He will be sure to be punished. |
| D．Neither he nor his teacher will be happy. |
| A．On a farm. | B．At home. | C．At school. | D．In an office. |
a. I don’t like April Fool’s Day.
b. I love April Fool’s Day.
c. April Fool’s Day is fun when you’re young.
d. When I was at school, April Fool’s Day was always good fun.
| A．a-b-c-d | B．b-a-d-c | C．b-a-c-d | D．d-b-c-a |
| A．Why people celebrate April Fool’s Day. |
| B．How people celebrate April Fool’s Day. |
| C．Some people’s opinions about April Fool’s Day. |
| D．Some people’s ways of celebrating April Fool’s Day. |
【推荐2】“Homestay is a form of study abroad program. It allows the visitor to rent a room from a local(当地的) family to better understand the local lifestyle. It also helps to improve the visitor’s language ability,” said a teacher during a school meeting last term. “Students who wish to learn more about foreign cultures or to get foreign experience should join this kind of holiday. I am sure you won’t be disappointed.”
After this special meeting, I always thought about this kind of holiday. Last month, I had a chance at last to go on such a holiday with some of my schoolmates and we went to London, a place where I had wanted to go since years ago.
As we were still young, we had a group leader who planned things for us and looked after us. After we got to London, we went to stay with different families. I was lucky that my host family was a white couple who had a daughter about my age. They treated me as a daughter of their family during my stay there. They were interested in me and I learnt a lot of things from them, too.
The holiday was filled with activities every day. After breakfast, a local teacher would come to take us in his car. Then we would have classes or go on a sight-seeing trip to different places of interest like the Big Ben, the London Bridge, and the Buckingham Palace. We would go back to our own homes after the activities.
The holiday was a valuable experience for me. I enjoyed every minute of it. Yet, time really flew fast. Three weeks later, we had to leave “home” for Hong Kong.
1. In the “homestay” program, a visitor can ________.| A．learn more about holidays | B．learn about life |
| C．improve his language ability | D．take part in foreign meetings |
| A．last month | B．years ago |
| C．the special meeting | D．her stay abroad |
| A．make plans for the family | B．take care of the students |
| C．stay with different families | D．rent rooms to the students |
| A．was very kind to her | B．went sight-seeing with her |
| C．had two white daughters | D．was interested in her activities |
| A．wished to stay a little longer | B．spent three weeks in her home |
| C．had classes in many interesting places | D．helped the teacher take the students in a car |
【推荐3】Modesty (谦逊) is a valuable quality in many cultures around the world. In China, this is no different. However, the phrase "毛遂自荐" seems to disagree with this.
During the Warring States Period, the Qin army marched (进军) on Handan. Seeing that Handan was in danger, Prince Pingyuan asked for help from the state of Chu. He wanted to pick 20 talented people to go with him. However, he could only find 19 people who were good enough. Then, a man named Mao Sui volunteered.
Prince Pingyuan looked at Mao Sui with doubt, "How long have you been here with me?" "Three years," Mao Sui answered."I hear that a person with talent is like an awl (锥子) in a cloth bag. Its sharp point will soon pierce (戳) through the bag. You've been here for a long time, but I haven't seen any of your achievements. Maybe you don't have any talent."said Prince Pingyuan."What I'm asking you now is to put me into that bag. If you do that, I will pierce through it. But not only the point—the whole awl," Mao Sui said confidently.
Impressed, Prince Pingyuan allowed Mao to join his team, and Mao proved very helpful. Now the phrase "Mao Sui recommending himself" is used to describe someone who volunteers to do a task.
However, there is a fine line between self-confidence and arrogance (傲慢). It's important to believe in yourself, but a strong ego can harm your career and relationships.
1. Where was Mao Sui from?| A．Qin. | B．Chu. | C．Handan. | D．Pingyuan. |
| A．19. | B．21. | C．20 | D．18 |
| A．Showing modesty. | B．Feeling unconfident. |
| C．Being professional. | D．Volunteering for a task. |
| A．putting an awl into a bag | B．putting Mao Sui into a bag |
| C．letting Mao Sui join the army | D．refusing Mao Sui |
| A．Modesty isn't a valuable quality. |
| B．Mao Sui wasn't a confident person. |
| C．Prince Pingyuan didn't like Mao Sui. |
| D．The writer thinks we should learn from Mao Sui. |
【推荐1】Do you want to be a volunteer? Maybe you need some ideas. Here is some advice.
Help kids learn and grow. Be a big brother or sister at an after-school care center. You can help little kids to learn or play with them.
Give back during the holidays. Serve dinner for the homeless, volunteer at an old people’s home, or give out toys to kids.
Help at an animal shelter (庇护所). Most shelters depend on (依靠) volunteers to keep the cats and dogs happy and take them to exercise. And when you’re walking dogs, you get some exercise, too.
Protect the environment. Take part in a park clean-up day. Plant a tree. Join a group to work together to protect a river.
Help sick people. Helping others can make you feel good. When you cheer sick people up, you also feel happy. If you have several hobbies, find a way to do them all. For example, if you love kids and are good at painting and dancing, visit a children’s hospital and teach them these interesting things.
1. How many pieces of advice does the writer give us in the passage?| A．Four | B．Five | C．Six | D．Seven |
| A．Feed animals. | B．Help animals do exercise. |
| C．Clean the shelter. | D．Make workers there happy. |
| A．Planting trees. | B．Protecting rivers. |
| C．Setting up a green club. | D．Cleaning up the park. |
| A．Volunteers can feel good when they help sick people. |
| B．Volunteering at a children’s hospital is meaningless. |
| C．An after-school care center is a place for homeless kids. |
| D．The old people’s home needs more volunteers than the children’s hospital. |
| A．Who can be a volunteer? | B．The reasons of being a volunteer. |
| C．The time of being a volunteer. | D．Ways of being a volunteer. |
【推荐2】It was nearly dark. The sun was dropping down behind the mountain. Little Tom came back home, with tears in his eyes.
“What's the matter, Tom? How's your trip?” his mother asked with a big smile.
“I failed. The mountain is so high and full of big or small stones on the way. I still wanted to go ahead, but I was tired and it was so late that I had to come back,” Tom cried.
“It doesn't matter. You are only 14 years old after all. You will have another chance,” his mother said.
“But, standing at the top of the mountain is my dream!” Tom said.
His father came over and asked, “Did you see the green trees on your way to the mountain?”
“Sure, and there were a lot of beautiful flowers on both sides of the road,” Tom replied.
“Did you hear the birds singing?” his father asked.
“There were many kinds of birds singing in the trees, and the sound was very sweet,” Tom said.
“Did you feel the beauty of nature?” his father asked.
“Yes, the blue sky, the white clouds, the green trees and the colourful flowers made a nice picture,” Tom answered.
“That's enough!”his father smiled and said. “Please remember, son, for often, completing your goal(目标) is not the most important thing. You didn't reach the top of the mountain, but you got a lot on the way.”
It is true that not every dream will come true, and that not every job will end up with a success (成功). The most beautiful views are on the way.
1. Tom got back home__________when the sun was dropping.| A．slowly | B．sadly | C．quickly | D．early |
| A．the mountain was too high | B．the way was full of big or small stones |
| C．he was tired and it was too late | D．he was only 14 years old |
| A．clear water | B．blue sky | C．colourful flowers | D．green trees |
| A．excited about | B．kind to | C．angry with | D．tired of |
| A．the goal is the most important thing for everyone |
| B．everyone should climb the mountain with his family |
| C．climbing the mountain is a very difficult job |
| D．the process (过程) is more important than the result |
【推荐3】We can use new ways to fight the novel coronavirus (新冠病毒) .Let's meet these high-tech helpers in China!
 Drones (无人机) In some countryside, the police use drones to find people in groups. When they are found by the drones, the police will warn them through the loudspeaker (扬声器) on the drone. |  Smart Robots Time to eat! In some hospitals, smart robots help to send food to patients. The robots can also help to hand out medicine and show the way to people. |
| |
 3D "Hospitals" A company in Shanghai has produced 15 mobile rooms within 24 hours by 3D printing technology and sent them to Hubei for patients to live in. Each room is about the size of a bedroom. |  AI System (系统) At the Mudanyuan subway station in Beijing, an AI system can check people in crowds to see if they have fevers. About three hundred people can be checked by it in one minute. |
1. What will the police do when a drone find people in groups?
| A．Warn the crowd. | B．Call up the crowd. | C．Send messages to the crowd. |
①Play with the patients. ② Hand out medicine. ③Give directions.
| A．①② | B．①③ | C．②③ |
| A．Within a day. | B．More than 24 hours | C．Within 24 days. |
| A．3 | B．300 | C．3000 |
| A．Smart robots help to send food to patients. |
| B．Technologies help to fight the novel coronavirus. |
| C．The AI system can tell people if they have fevers. |
