Most teens need about 8 to more than 9 hours of sleep each night．The right amount of sleep is necessary for anyone who wants to do well in a test or play sports without tripping over their feet. Unfortunately，though，many teens don’t get enough sleep.
Why is sleep important? Sleep deficit affects everything from a person’s ability to pay attention in class to his or her mood．Research shows that more than 20% of high school students fall asleep in class，and experts have been able to tie lost sleep to poorer grades．Lack of sleep also damages teens’ ability to do their best in sports．Slowed responses and less concentration(专注)caused by sleep deficit don’t just affect school or sports performance，though．Lack of sleep slows reaction time，which can be life threatening for people who drive．The National Highway Safety Traffic Administration reports that 1，500 people are killed every year in crashes caused by drivers between the ages of 15 and 24 who are simply tired．Lack of sleep has also been linked to emotional troubles， such as feelings of sadness and depression．Sleep helps keep us physically healthy，too，by slowing our body’s systems enough to re-energize us after everyday activities.
How do I know if I’m getting enough sleep? Even if you think you’re getting enough sleep， you may not be．Here are some of the signs that you may need more sleep: (1) difficulty in waking up in the morning；(2) inability to focus；(3) falling asleep during classes； (4) feelings of anxiety and even depression(忧郁)．Recently，some researchers，parents，and teachers have suggested that middle and high school classes begin later in the morning to meet teens’ need for more sleep．Some schools have already tried later starting time．You and your friends，parents，and teachers can call up for later start time at your school，but in the meantime you’ll have to make changes on your own first.
1. Which is the best choice for the blank in Paragraph 2?| A．What does sleep deficit mean |
| B．How many hours do teens sleep a night |
| C．Why can’t teens get enough sleep |
| D．Why do teens now need to sleep more |
| A．1500 drivers between ages of 15 and 24 in America are killed a year. |
| B．Lack of sleep has bad influence on both life and school performance. |
| C．Sleep helps to keep us healthy by energizing our everyday activities. |
| D．Poor performance in study and sports has little relation with lost sleep. |
| A．To explain the reason why teens are lack of sleep. |
| B．To draw people’s attention to teens’ sleeping problem. |
| C．To introduce that we have the problem of sleep shortage. |
| D．To give teens advice on possible ways of having better sleep. |
相似题推荐
【推荐1】Have you ever noticed how many calories (卡路里) you eat in a day? There is a special convenience store opened in the Chengdu Youth Palace. If you “shop” there, you can find out how many calories there are in different foods.
The store was opened on May 17th, 2022. It’s part of the “Know Your Food” program of the UNICEF. The purpose of the program is to make children and young people know more about foods, and help them make healthy choices about their diet.
Instead of real foods, many imitation (仿制) snacks are put on the shelves in the store, including candies, sugary drinks and many packets of latiao. People can take them to the self-service counter (柜台) to see how many calories they have. In addition, the store offers many models and cartoons to help people understand which foods are very good for them and which foods they should eat less often.
At present, obesity (肥胖症) has become a serious problem among children. It is shown that nearly 20% of children between 6 and 17 years of age, and over 10% of children under the age of 6 in China are overweight. Experts also point out that the increasing availability (可用性) of cheap, highly processed foods and drinks can lead to the rapid growth of children who are overweight.
Being overweight is known to have many bad influences. Such a store helps to remind children to care about what they eat. At the same time, similar stores are opened in other cities, such as Weihai in Shandong Province and Enshi in Hubei Province.
1. What makes the convenience store special?| A．There are many special models. |
| B．It’s very popular among young children. |
| C．It helps people know the calories in food. |
| D．It’s the only store of its kind in the country. |
| A．To meet people’s daily needs. |
| B．To offer a place for students to relax. |
| C．To introduce some unusual foods to people. |
| D．To help children develop good eating habits. |
| A．Customers. | B．Sweet drinks. | C．Real foods. | D．Foods people chose. |
| A．Almost one in five Chinese children aged 6 to 17 is overweight. |
| B．Highly processed foods have little influence on children. |
| C．Being overweight is the number one problem for Chinese children. |
| D．Over 10% of Chinese children under 6 are underweight. |
【推荐2】Sleep is important to teenagers because it plays an important role in their physical and mental development. So how many hours of sleep does a teenager need?
| Age group | Age range | Recommended hours of sleep every 24 hours |
| School age | 6—12 years | 9—12 hours |
| Teen | 13—18 years | 8—10 hours |
| Adult | over 18 years old | 7 hours or more |
A recent report shows that many teenagers in America are not getting the recommended amount of sleep. Here are the results.
Why is it hard for teens to get good sleep? There is no single reason. Instead, several factors (因素) relate to this problem. One of them is late bedtime and early school start times. Now, more and more teenagers are developing a habit of being “a night owl”, staying up later at night and sleeping longer into the morning. If allowed to sleep as they wish, many teens would get eight hours or more a night, but most school start times require them to wake up much earlier in the morning.
The use of electronic devices (设备) like the smartphone and computer is another factor. Research has found that 89% or more of teens keep at least one device in their bedroom at night. Screen time late into the evening can cause sleep problems. Using these devices can keep teens excited and unable to fall asleep. And being in the light from smartphones also makes people feel less sleepy.
So teens should improve their sleep environment and habits to get better sleep. Here are some tips.
◆ Get eight hours of sleep a night on weekdays and weekends.
◆Put away electronic devices at least half an hour before bed. ★
◆Keep the bedroom cool, dark and quiet.
1. How many hours should 11-year-old Lucy sleep each night?| A．7 hours or more. | B．8—10 hours. | C．9—12 hours. | D．13—18 hours. |
| A．70% of high school boys can get enough sleep. |
| B．40% of middle school students don’t sleep well. |
| C．3 out of 10 high schoolers cannot get enough sleep. |
| D．6 out of 10 middle schoolers do not get enough sleep. |
| A．A person who stays up late. | B．A person who likes studying animals. |
| C．A person who enjoys night views. | D．A person who lives in the wild. |
| A．Reply quickly to unread messages. |
| B．Keep them on silent mode during the night. |
| C．Do some activities before bed to relax your body. |
| D．Avoid coffee, especially in the afternoon and evening. |
| A．call on people to pay attention to teenagers’ sleep |
| B．tell something about American teenagers’ sleep |
| C．show how smartphones influence the teenagers’ sleep |
| D．give the reason why teenagers go to bed late |
| A. You should learn to do some housework at home. Try to understand this and help your parents. B. Health is more important than fun. You should give up this bad living habit to stay healthy. Go to bed early and drink a cup of milk before sleeping. C. It’s a good idea to talk to her. Tell her that she can borrow your things after she asks you first. D. Why not talk with your teacher about this? Tell him that he is wrong and then he’ll be friendly to your classmate. E. Stop doing chores as soon as possible and then you’ll have more time to do what you really like. In this way, your dream of being a basketball player will come true. F. Why not tell your teacher what you are thinking? Tell him he shouldn’t be so unfair. What’s more, you should study harder. G. How about asking someone outgoing for help? Ask them how to make friends with others and how to talk with others comfortably. |
【推荐1】Nowadays, we write things with a keyboard more often than that with a pen. For some people, they almost never write things by hand. However, recent studies have shown this act has many benefits.
New brain research, led by researchers in the Norwegian University, shares the same result: choosing handwriting over using a keyboard results in better learning and memory.
“When you write your shopping list or lecture notes by hand, you simply remember things better afterwards,” said Audrey, leader of the study.
The study was conducted using a machine to track and record brain wave activity. The participants included 12 young adults and 12 child. This is the first time that children have participated in such a study. Each subject was asked to write by hand and type on a keyboard. Then the machine bogan to work. Each examination took 45 minutes for a person.
The results showed that the brain in both young adults and children is more active when writing by hand than when typing on a keyboard. According to Audrey, plenty of senses are made active by pressing a pen on paper, writing. These sense experiences build contact between different parts of the brain, opening the brain up for learning.
Audrey believes that the outcomes stress the importance of children learning to write at an early age, especially at school. “If you use a keyboard, you use the same movement for each letter. Writing by hand requires control of your fine motor (精细动作) skills. lt is important to put the brain in a learning state as often as possible, ”Audrey added. For example, you might use a keyboard to write an essay, but you should take notes by hand during a lecture.
1. What does “this act” mean in the 1 paragraph?| A．writing things with a keyboard | B．writing things with a pen |
| C．never writing things by hand | D．writing either on a keyboard or with a pen |
| A．12 | B．24 | C．45 | D．Not mentioned |
①Participants were chosen and prepared for it.
②The researchers studied on the results shown.
③A machine tracked and recorded the brain wave activity.
④Each participant wrote by hand and typed on a keyboard.
| A．①④③② | B．①③④② | C．②③①④ | D．③②④① |
| A．Children like writing by hand more than adults do. |
| B．Typing on a keyboard is convenient and fashionable. |
| C．Writing by hand does more good than we’ve known. |
| D．Nothing should be done by typing from the study on. |
| A．Amage for keyboard. | B．A time for modern machines. |
| C．Putting your brain in a leaning state. | D．Writing by hand helps learn better |
【推荐2】Let’s imagine this: Your parents are going out of town for a week. You’re left with 800 yuan. How will you spend it? It would be silly to spend the money at the mall, especially if you already have great clothes in your room, right? A better way to spend that money would be on key things such as food and transportation. You’d probably also want to put part of the money aside for something else.
Well, you just learned how to budget (预算). It’s all about deciding what matters the most to you and how much you want to spend on these things.
Working out your priorities (优先事项) is the most important part of budgeting. For example, if you plan on buying a new smartphone and a cool smartwatch, you should consider saving some money. The next time your friends invite you to go to KTV with them, you might as well decide to pass.
But having a budget doesn’t mean you can’t have fun; you just have to get creative. Instead of meeting your friends at the pizza shop and then going to the movies, you could invite them over to your house. You can buy some frozen pizzas at the supermarket and watch a movie online. It’s a lot cheaper but just as fun.
If you search for budgeting tips, you’ll find many. As a young person, you have plenty of chances to experiment with different ways. Once you find a way that works for you, it’s easier to get excited about budgeting.
Keep in mind that even adults make mistakes at times. If you go over your budget, just try to learn from your mistakes.
1. Why does the writer suggest spending the money on food and transportation?| A．Because they are basic needs. | B．Because they help avoid trouble. |
| C．Because they cost less money. | D．Because the money is not enough. |
| A．Go to KTV with old friends. | B．Meet friends at a nice pizza shop. |
| C．Buy smart clothes at the mall. | D．Watch a movie online with friends. |
| A．Making good budgets is a challenge for ever. |
| B．Don’t make any mistakes to go over your budget. |
| C．Even adults should learn from the mistakes they make. |
| D．The young shouldn’t be afraid to make mistakes with budget. |
| A．It can be easier for adults. | B．It can be difficult but helpful. |
| C．It can stop people having fun. | D．It can help to save more money. |
| A．Share tips on how to make more money. | B．Tell readers the importance of saving money. |
| C．Help teenagers learn to spend money wisely. | D．Set some rules for people to live a better life. |
【推荐3】My friend Siberia once said: “Things do not give us true happiness.” I used to wonder, “Is this really so?” But after experiencing a worldwide quarantine (隔离), I think it’s true.
We live in a new and strange world. My new dress hangs in my closet (衣橱)—I have nowhere to wear it. My expensive car is parked—I can’t go anywhere. Siberia was right—things do not make me happy.
Then how can we find happiness? I asked Siberia this question. She said it’s easy—you just have to smile and be nice to everyone, even strangers.
I decided to try it. I joined a chat group where my neighbors and I discuss our problems. I wrote, “Dear neighbors, I hope you’re having a great day! Everything will be all right.” Within minutes, I received lots of messages from my neighbors. People thanked me and wished me a good day. One neighbor shared a fun song, while another sent a cute kitten sticker.
I thought to myself, “I’ve made so many people happy with just a few words. If each of us said one nice thing, there could be so much happiness in the world!” This is why I’m beginning the kind words marathon (马拉松). Let’s each write something nice every day to a friend, neighbor. volunteer... anyone! We can support each other during these difficult times.
根据短文内容，选择最佳答案。
1. Siberia is author’s _________.
| A．sister | B．friend | C．teacher | D．neighbor |
| A．The author’s doubts about life are correct. | B．Living in quarantine makes life easier and simpler. |
| C．People can’t depend on things to be happy. | D．The author has wasted a lot of money on things. |
| A．To meet strangers. | B．To try out her friend’s idea. |
| C．To help her neighbors solve problems. | D．To prepare for a performance. |
| A．The author was a marathon runner. |
| B．People enjoy saying nice things to others. |
| C．Exercising can help people get through difficult times. |
| D．The author started an activity to pass happiness on to others. |
| A．She is a person of action. | B．She doesn’t believe in strangers. |
| C．She is not good at communication. | D．She was suffering from COVID-19. |
【推荐1】The First Robotics Competition (FRC) was held in Shenzhen. A total of 35 high-school student teams from China, the United Kingdom, Turkey, Poland and other countries joined the two-day contest with their hand-crafted robots.
The FRC is a world-class robotics competition that was first launched in the United States in 1989. It encourages students to improve their hands-on skills and creative capabilities.
There are strict rules, limited resources and an intense six-week time limit before the competition. Teams of student should raise money, design a team brand and improve their teamwork skills, as well as build industrial-size robots to compete. The rules of the game include two groups, and each group has three teams. The group with the highest score wins the game.
The seven teams who won the top prizes in the FRC Shenzhen Regional will take part in the First Championship to be held in the United States next month.
Yin Shifei, secretary general, said the competition not only enables students to improve their programming, decision-making and problem-solving skills, but also encourages them to cooperate and share with other people
According to Yin, a Shenzhen team invited over 40 left-behind children to the city to watch the FRC game because they wanted to make education more equitable. And the left-behind children can get fair education. These children's parents are migrant workers in Shenzhen, but they are left behind in their hometowns.
Shenzhen became the first city to host an FRC region in Asia last year, and another regional contest will be held in Shanghai this year.
1. From the passage, we can know _______.| A．primary-school student from China joined the competition |
| B．the competition this time lasts for two days |
| C．the FRC was first launched in Poland in 1989 |
| D．the FRC is a nation-class robotics competition |
| A．educating | B．teamwork | C．creative | D．programming |
| A．they wanted to have more audience |
| B．they hoped that more people would cheer for them |
| C．the left-behind children's parents missed them |
| D．they wanted the children to receive fair education |
| A．FRC is a good way to improve students' abilities |
| B．the rules of FRC are very strict but helpful |
| C．more Chinese cities will hold FRC regional in Asia |
| D．Shanghai became the third city to host an FRC in Asia |
| Museum | Place | Introduction |
| The Louvre | Paris,France（法国） | The art museum was opened in 1793 in the Louvre Palace.Its famous show,of course,is Leonardro da venci’s painting of the Mona Lisa. |
| British Museum | London,Britain(英国） | It is one of the world’s greatest museums of human history and culture. It was opened on Jan 15, 1753. And now it has about 7 million things,This makes the British Museum one of the biggest museums in the world. |
| Egyptian Museum | Cairo,Egypt（埃及） | The Egyptian Museum has at least 120000 shows.There are two main floors in the museum:the first floor and the second floor,On the 1stfloor,there is a collection Egyptian ,On the second floor,there are antifacts of ancient Egypt(古埃及). |
| Hermitage Museum | Saint Peters-burg, Russia | The museum opened in 1794.It is a museum of art and culture,with a collection of over 3 million shows from all over the world. |
At last ,On National Day , he went to the oldest museum. Please guess which museum he went to.
1. The British Museum is a museum of __________.
| A．history and culture |
| B．natural history |
| C．science |
| A．Hermitage Museum |
| B．Louvre |
| C．British Museum |
| A．4 | B．3 | C．7 |
| A．Asia | B．Africa | C．Europe |
| A．The Louvre |
| B．British Museum |
| C．Hermitage Museum |
【推荐3】In 1845, a deadly disease struck Ireland, killing all the Lumper potato plants. In another place or time, the death of single crop species (物种) might not have been so important. But in Ireland, in 1845, people depended almost solely on the potato for food. The death of one species caused a terrible famine (饥荒). Now, some scientists are worried that such a famine could happen again, but on a much wider area.
Over the centuries, farmers have discovered thousands of different species of food crops. However, you won't find many of these species in your local supermarket. To feed the seven billion people on Earth, most farmers today are growing only species of plants and farming only species of animals that are easy to produce in large numbers.
In the Philippines, there were once thousands of varieties of rice: now fewer than 100 are grown there. In China, 90% of the wheat varieties grown just a century ago have disappeared. Scientists believe that over the past century, more than half of the world's food varieties disappeared.
One solution to this problem is to collect and store the seeds as many different plant varieties as we can before they disappear. The idea was first suggested by Russian scientist Nikolay Vavilov. In the 1920s and 1930s, he collected around 400,000 seeds from five continents. More recently, others are continuing the work he began.
In the US state of Iowa, Diane Ott Whealy wanted to protect historic plant varieties, like the seeds her great –grandfather brought to the US from Germany more than a hundred years ago. She and her husband started a place called Heritage Farm, where people can store and trade seeds.
More importantly, the people at Heritage Farm don't just store the seeds, they plant them. By doing this, they are reintroducing foods into the marketplace that haven't been grown for years. These food species are not just special in terms of appearance or taste. They also offer farmers food solutions for the future, from the past.
1. What is this passage mainly about?| A．The fact that many food species are dying out. |
| B．The need to protect potatoes from disappearing. |
| C．The ways to increase the number of food species. |
| D．The ways to prevent food species from disappearing. |
| A．usually | B．only | C．rarely | D．occasionally |
| A．Because people depend on certain species of food crops. |
| B．Because the same deadly disease may attack crops again. |
| C．Because the world's population is larger than that in 1845. |
| D．Because farmers grow the same potatoes as those in the past. |
| A．stored and planted seeds | B．realized the serious problem |
| C．suggested collecting plant seeds | D．worried a famine could happen again |
| A．The disease spread very quickly and killed thousands of people in Ireland. |
| B．Around 80 percent of the rice varieties in the Philippines have disappeared. |
| C．Heritage Farm is the first place in the US for people to store and trade seeds. |
| D．People have been storing seeds to save plant varieties for more than 150 years. |
【推荐1】Your Internet experience is ruined when the net speed is too slow — it takes so long to open a web page and the reality shows you’re watching stops every few minutes. That can be very annoying.
But it could be a thing of the past. On June 3, the Ministry of Industry and Information Technology announced that China’s major telecom carriers(电信公司) would start to provide 5G services.
1 What is 5G?
The “G” in “5G” refers to the generation of mobile network technologies. 1G let us talk to each other, 2G let us send messages, 3G gave us mobile data and the Internet, and 4G made all of these things faster.
Now 5G promises much faster data download and upload speeds, and more stable connections. This means that you will be able to download an entire HD movie in seconds and only experience a short delay(延迟) between sending and receiving data.
2 What changes will 5G bring us?
With a 5G network, the short delay in information exchange will allow driverless cars to run more safely. Meanwhile, 5G-enabled wearable devices(设备) will be of great use in hospitals. Besides, VR games will become more popular with 5G. The short delay of 5G will make the games feel even more real.
3What are the disadvantages of 5G?
According to the BBC, __________, it will not be perfect.
For one thing, 5G will not“travel” far. On 4G networks, you can be 10 kilometers away from the nearest transmission base and hardly lose signal(信号). But 5G will only cover about 300 meters. And in order to use 5G, we will have to buy new products especially designed for 5G that are expensive at present. All in all, there is still much to be done before 5G’s popularization.
1. “G” in “5G” refers to ___________.| A．the speed of the Internet | B．the generation of the technology |
| C．the delay in information exchange | D．the game on the smart phone |
| A．because it is quite expensive to get 5G products |
| B．5G has its own advantages and disadvantages |
| C．until hundreds of millions of Internet users use 5G |
| D．though 5G will make our lives more convenient |
| A．2G let users send messages through phones. | B．3G gave us mobile data and the Internet. |
| C．4G will make VR games more real and popular. | D．5G will be used in the medical field. |
| A．An introduction of 5G. | B．Changes 5G brings us. |
| C．The progress of technology. | D．Disadvantages of 5G. |
When people talk to friends online, they may use emojis(表情符号) or memes(表情包) more often than words to show their feelings. Memes are more complex(复杂的) than emojis. They have words on images(图像).
Why do people like using them so much? I think there are a few reasons. With emojis and memes, we are able to show our feelings without typing(打字). It makes us chat more easily. If I want to say “I love you”, I can just send someone a “heart” emoji. Or I can send an “angry face” emoji to say “I'm very upset right now!”
Sometimes it is difficult to show feelings with words, so we can use emojis and memes to help us. For example, when you want to celebrate a victory(胜利), you can use the Success Kid meme. It's a picture of a boy with a clenched fist(紧握的拳头) and a determined(坚定的) face. It's easy to use a picture to show a thought or feeling that everyone knows.
People use these things for different reasons.
Emojis and memes are quick and easy, and almost every phone or messaging app has them.
1. Memes have according to the passage.| A．words and images | B．words | C．images | D．sounds |
| A．some emojis and memes |
| B．memes are more complex than emojis |
| C．how people use emojis and memes |
| D．why people like using emojis and memes |
means “ ”.| A．angry | B．sad | C．love | D．happy |
| A．They are quick and easy. |
| B．They can make people understand each other more easily. |
| C．People don't need to type. |
| D．They are changing every year. |
| A．Different reasons. | B．Emojis and memes. |
| C．The Success Kid meme. | D．Phones or messaging apps. |
【推荐3】What is a museum? A museum is a good place to keep old and beautiful things. A museum may be a place to learn about science and a place to find out about art or people or animals.
What is inside a museum? Some museums have old cars and airplanes. Many museums have pictures and statues （雕塑）. Others have rocks and old bones. One museum even has a real old street inside. It has shops and people's statues of doing business. It looks so real that one might feel that he was back to the old time.
Many cities have museums. Some very small towns have museums, too. Indianapolis （印第安纳波利斯） has a children's museum. Children do not have to pay to get in. Children often go to the museum. They like to look at the dinosaur （恐龙） bones. They see a ten-foot-tall white bear.
On Saturdays, Indianapolis children can hear talks about animals and trees. They see movies. They take hikes. They even learn to make things there.
1. What is NOT true about a museum?______| A．It's a good place to do some shopping. | B．People can learn about the history of a place there. |
| C．People can learn about science there. | D．It's a good place to learn about art. |
| A．see movies | B．listen to talks | C．make things | D．play with bears |
| A．there is only one museum for children | B．it's free for children to visit the children's museum |
| C．people do not have to pay to visit the children's museum | D．museums are all the same |
| A．the dinosaur bones | B．all old bones |
| C．old streets | D．airplanes |
| A．old cars and airplanes are kept in museums | B．animals and trees are found in museums |
| C．there are all kind of museums | D．children like museums |
