Water plays an important role in keeping you healthy. This should come as no surprise. Much of your body is made up of water, after all. It keeps your body working properly. But did you know that too much water can poison (使……中毒) you?
Water poisoning happens when people drink too much water. This makes sodium (钠) in their blood too little.
You probably already know that too much sodium can be unhealthy. That’s true, but too little is also harmful. When you have too little sodium in your body, a lot of things will go seriously wrong in your body. Then you will feel really terrible.
Your brain may begin to go wrong. You may get a headache, feel very tired and want to throw up. In these cases, water poisoning can be deadly. You will need to be sent to a hospital right away.
Protecting yourself from water poisoning may seem easy—just don’t drink too much water, right? In some situations, however, this is easier said than done. For example, when you do some heavy exercise, such as running a marathon, you may have to drink a lot of water. It is then important to balance the number of water you drink with the number of water your body is losing. This can help you stay healthy whenever you are exercising.
So, how much water should a person drink each day? For years, we have been told to drink two liters (升) of water a day. But in fact, the actual number needed is different for each person. Today, most doctors are telling people that they should drink water whenever they feel thirsty. We can’t live without water. Neither can we live with too much water in our bodies. Make sure you take the right number of it each day—staying healthy is all about staying balanced!
1. What is much of people’s body made up of according to the passage?| A．Water. | B．Blood. | C．Hair. | D．Brain. |
a. People feel really terrible.
b. People drink too much water.
c. A lot of things go seriously wrong.
d. There is too little sodium in their blood.
| A．c-b-a-d | B．b-c-a-e | C．b-d-c-a | D．b-a-d-c |
| A．Water poisoning won’t make people die. |
| B．Different people need different number of water. |
| C．Too little sodium will not be harmful to people’s health. |
| D．It’s easy for people to protect from water poisoning. |
| A．To tell us stay in good health. |
| B．To tell us stay in a balance of water. |
| C．To tell us drink as less water as possible. |
| D．To tell us drink two liters of water a day. |
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It is very important to keep yourself in good health. When you are sick, you will neither be able to study nor enjoy yourself. One of the factors(因素) leading to good health is to have a balanced diet. Remember, "You are what you eat."
You should eat more fruits and vegetables which contain a lot of fibre(纤维).
Try to eat less fried food and choose foods that are boiled, steamed, baked or stewed. You should also cut down on oily, fatty and sugared foods and eat more food with carbohydrates(碳水化合物) such as rice, bread and cereals for energy, especially if you have a more active lifestyle.
The basic rule to remember is to include something from EVERY food group at each meal using the suggested proportions(比例) in the Pyramid Diet.
1. To stay healthy, one should ________.| A．only eat fruit and vegetables | B．eat delicious food |
| C．keep a balanced diet | D．eat food in any proportion |
| A．fish and chicken | B．meat and vegetables |
| C．butter and bread | D．bread and fruits |
| A．Apples | B．Noodles | C．Carrots | D．Eggs |
| A．Fried | B．Boiled | C．Baked | D．Stewed |
Mornings can be busy.
You need to concentrate on (专注于) the teacher and your schoolwork. If you have trouble concentrating, you will find it harder to learn.
Every day your body needs nutrients (营养). If you do not have breakfast (or any other meal), you might not grow well and stay healthy.
| A．As you can see, there are good reasons to have a healthy breakfast |
| B．You get energy from the food you eat |
| C．There are lots of things to do |
| D．So, having a good breakfast helps you concentrate |
| E．Being hungry can make you feel terrible |
Does having a good breakfast improve school study? More than 1,000 students in the city of Lawrence took part in an experiment one year ago and the answer is YES.
In the experiment, students with breakfast got higher scores in their tests than those without breakfast. Among those who had breakfast, fewer students were late for school, and much fewer missed their school. “By eating breakfast, you feel active in your morning study and you keep good health.” Says Amy, a famous doctor. She did the experiment for one year.
Students without breakfast may be losing nourishment(营养) in eggs, fruit, milk, bread and so on. So try to get your children to have breakfast so that they can feel well, keep strong and do their best in their school work.
1. What does “experiment” mean in this passage?
| A．考试 | B．演讲 | C．实验 |
| A．Over 1,000 students. |
| B．Less than 1,000 students. |
| C．Hundreds of students. |
| A．some eggs and fruit |
| B．some nourishment in fruit |
| C．some eggs, fruit, milk, bread and so on |
| A．to get more scores in their test |
| B．to keep good health and improve their study and behavior (行为) at school |
| C．to get to school earlier |
| A．Breakfast or Not |
| B．What to Have for Breakfast |
| C．Where to Have Breakfast |
【推荐1】Many people know Shanghai’s beautiful night view (景色), especially the colourful lights from the buildings. Light helps us see and makes the environment more beautiful. Too much light becomes a kind of pollution, but many of us ignore this pollution, it causes a lot of problems. In fact, light pollution can be almost as bad as carbon dioxide (二氧化碳) pollution.
Too much light can do harm to our health. First, it can make us feel bad and we can’t sleep well. Second, lights need electricity, and creating electricity will give off greenhouse gases. This affects the air and causes breathing problems. Third, study shows people living under bright light for long can have cancer more easily.
Too much light may even harm wild animals. Thousands of birds die from it each year. Some hit into the light buildings, as they become puzzled (错觉) by the light. Some birds fly over cities for moving to another place, they sometimes lose their ways by the bright light. Sea turtles (海龟) can’t find dark beaches to lay their eggs.
To protect humans and wildlife, we should take measures to reduce the use of lights at night.
1. The underlined word “ignore” mean ________ Chinese.| A．熟悉 | B．忽视 | C．消除 |
| A．air | B．water | C．noise |
| A．it can make us lose hearing |
| B．it can make us produce bad mood |
| C．it can cause breathing problems |
| A．Too much light can do harm to wild animals. |
| B．Too much light can make birds become puzzled. |
| C．Sea turtles can’t find proper beaches to rest because of bright light. |
| A．the measures to reduce the use of lights at night |
| B．the reasons why thousands of birds die each year |
| C．the harm of light pollution |
【推荐2】Facial-recognition（人脸识别）cameras are everywhere—even in your smartphone. Many people use this technology to unlock their phones, open doors, or make quick payments. But during the pandemic（疫情）, there is a problem: everyone wears masks. What a trouble!
Scientists are trying to solve this problem. For example, Engineering & Technology（E&T）magazine reports that Hanwang, a tech company in Beijing, has made a new system（系统）. It can recognize 95 percent of people when they wear masks.
What’s the secret? It’s all about your eyes.
Marios Savvides from Carnegie Melon University, US, studies facial recognition. As we get older, he says, our faces change shape. But the area around our eyes doesn’t. It stays the same—even if we put on weight. As long as there are enough data（数据）from the area of our eyes, the cameras can recognize us. Tech5 is another facial-recognition company. The Swiss company’s product scans（扫描）the shape of your face. It also scans your iris（虹膜）, which is the colored part of your eyes. Tech5 hopes to ignore（忽略）all of the face below the nose.
This kind of software is more important than just unlocking your phone. “It can find out criminals and terrorists[even when they wear masks],” said Huang Lei from Hanwang. Hanwang’s technology is used by Chinese police in places like subway stations and airports. Similar technology is used by the United States Air Force（美国空军）.
Huang pointed out one big weakness: it fails when people wear both a mask and sunglasses. “In this situation, all of the key facial information is lost,” Lei said to E&T.
1. What do many people use the facial-recognition technology to do?①to unlock the phones
②to make money
③to open doors
④to detect crime suspects
⑤to make quick payments
| A．①③⑤ | B．②④⑤ | C．①②⑤ | D．②③④ |
| A．All facial-recognition cameras work well during the pandemic. |
| B．The new system for facial-recognition from Hanwang works better. |
| C．Scientists have solved the problem by changing the information on face. |
| D．Only the technology from United States Air Force can recognize crime suspects. |
| A．Because most of the people wear masks. | B．Because the company works for the air force. |
| C．Because humans faces change due to the age. | D．Because the area around eyes stays the same. |
Bill can see well. But he cannot recognize（认出）the faces he sees—not even his own mother. He tells his experience. “Once, at midday, I met my mother while walking down the street. I did not recognize her. We walked towards each other. We passed within a meter of each other. The sidewalk was not busy. The only way I know this happened is I was told about it that night. She was not happy about this incident. And she has never forgiven（原谅） me for it!”
Bill has face blindness（盲）. For most people, this situation can be hard to understand. But face blindness may be more common than you think.
So, how does a person get face blindness? Well, there are two ways. Some people with face blindness are born with the ability to recognize. But then, their brain hurt badly. Over thirty years ago, Lincoln Holmes was in a car accident. The accident damaged（损害） his brain. He can still do everything just like before-walk, talk, and work. But since the accident, Lincoln can no longer recognize faces. He cannot even recognize people he knew after the accident happened.
In the past, doctors thought that brain damage was the only way to get face blindness. However, scientists now believe that the most common way people get face blindness is from their parents—they inherit it! Recent studies suggest that face blindness stays in families.
But there are not any treatments（治疗）for face blindness at present.
1. How does the writer start the passage?| A．By explaining the meaning. | B．By giving an example. |
| C．By showing a study. | D．By giving advice. |
| A．Bill walked past his mother | B．Bill has face blindness |
| C．Bill didn’t see his mother | D．Bill didn’t recognize his mother |
| A．brain damage | B．a bad illness | C．a sad experience | D．his family’s illness |
| A．模仿 | B．遗传 | C．脱离 | D．恢复 |
| A．How to protect our brain. | B．What to do if we get face blindness. |
| C．Why people get face blindness. | D．How to keep away from face blindness. |
In 2003, we won the battle against(对抗) SARS. At the moment, we are fighting against COVID-19. In fact, there have been many terrible epidemics(流行病) and plagues (瘟疫), which changed the development of human history. Here are three of them.
Plague of Athens(雅典大瘟疫) During the second year of the Peloponnesian War (431 — 404 BC), a great plague hit Athens. The plague killed about 300,000 people. Ancient Greek historian Thucydides suffered from the disease. Luckily, he got well. He said that birds and animals were also affected and that doctors were among the most affected by it. Modern historians think it caused the fall of ancient Greece(古希腊). |
Black Death Black Death came from central Asia first and was carried by fleas(跳孟) living on rats(老鼠). The skin of a person with this disease would turn black in places. It killed about 25,000,000 people in the 14th century. Because of the disease, there were not enough farmers in Europe. |
The Epidemic(流感) of 1918 The epidemic broke out in Spain in May 1918. Within months, it killed more people than any other illness in recorded history. It caused about 50 million deaths worldwide. The flu greatly changed the social situation at that time. |
| A．Three. | B．Four. | C．Five. |
| A．In 431 BC. | B．In 430 BC. | C．In 404 BC. |
| A．Plague of Athens. | B．The Epidemic of 1918. | C．Black Death. |
| A．It was very terrible for birds, animals and humans. |
| B．Nurses were among the most affected by it. |
| C．It caused the fall of ancient Greece. |
| A．Black Death was carried by fleas living on rats. |
| B．The Epidemic of 1918 broke out in central Asia. |
| C．Some epidemics and plagues changed the history of humans. |
It is very important for teenagers to have one good friend or a circle of friends.
Even when they are not with their friends, they usually spend a lot of time talking among themselves on the phone. This communication is very important in children’s growing up, because friends can discuss something difficult to say to their family members.
However, parents often try to choose their children’s friends for them. Some parents may even stop their children from meeting their good friends. The question of “choice” is an interesting one. Have you ever thought of the following questions?
Who chooses your friends?
Do you choose your friends or your friends choose you?
Have you got a good friend your parents don’t like?
Your answers are welcome!
1. Many teenagers think their _____ know them better than their parents do.
| A．friends | B．teachers |
| C．brothers and sisters | D．family members |
| A．to see their friends |
| B．to talk with their parents |
| C．to have a discussion with their family on the phone |
| D．to talk with their friends on the phone |
parents may even stop their children from meeting their good friends.”?
| A．Some parents may even not allow(允许)their children to meet their good friends. |
| B．Some parents may even ask their children to stay away from their good friends. |
| C．Some parents may even not let children meet their good friends. |
| D．Some parents may want their children to stop to meet their good friends. |
| A．Parents should like everything their children enjoy. |
| B．In all families children can choose everything they like. |
| C．Parents should try their best to understand their children better. |
| D．Teenagers can only go to their friends for help. |
| A．You are welcome to have a discussion(讨论)with us |
| B．We’ve got no idea, so your answers are welcome |
| C．Your answers are always correct |
| D．You can give us all the right answers |
【推荐3】For most of us, stress is a fact of life. But there are many useful ways to lower stress. Let’s take a look.
 | Sometimes it can be difficult to say exactly what we’re feeling. When we feel uneasy or disappointed, we can put problems into words. Keeping a diary is a good way to relax. |
 | If we get angry, music has a wonderful influence on our feelings. When we feel sad, it fills our hearts with warmth. |
 | When we get nervous or upset before a test, take a few deep breaths. |
 | Enough sleep helps us keep clear minds. Without plenty of rest, it is hard to pay attention to our study or work. |
 | Actually, the most important way that we can lower stress is to have a healthy lifestyle. Especially exercise is a key part of staying healthy and good for both physical and mental health. |
1. How many ways can we use to lower stress?
| A．4. | B．5. | C．6. | D．7. |
| A．We can go to bed. | B．We can call our friends. |
| C．We can walk on the playground. | D．We can write down our problems. |
| A．To listen to music. | B．To study hard. | C．To keep a diary. | D．To read our favorite books. |
| A．Drawing pictures. | B．Learning to swim. |
| C．Taking deep breaths. | D．Having enough sleep. |
| A．It talks about our stress. | B．It tells us how to exercise. |
| C．It talks about our daily life. | D．It tells us how to lower stress. |
