There is an interesting part of your body. It is always dying, and it is replaced(更新) every 28 days. Everywhere you go, you leave very small pieces of it. It is the largest part of your body. It is your skin(皮肤)
When we think of parts of the human body, we usually think of the heart or the brain. But the skin is also a part of your body. In fact, it makes up about 15% of your body weight and covers an area of about two square meters.
The skin is always replacing itself. Dead skin cells (细胞) are always falling off your body. In fact, scientists say that half of the dirt in your house is made up of dead skin.
The skin protects your body. Your skin is a covering for the inside parts. It also works hard to keep your body warm or cool. Very small holes in the skin can open or close to help control body heat.
Your skin is also a “feeler” for your body. It feels touch or pain. Parts of cells that feel touch are connected to the brain. When you touch something, your brain decides what to do and then tells your muscles(肌肉). But the parts that feel pain are connected straight to muscles. The muscles don’t need the brain to tell them to jump. Because of all the things the skin does, it truly is an amazing part of your body.
1. The largest part of the human body is _________.| A．the head | B．the skin | C．the brain | D．the leg |
| A．How thick it is | B．How dark it is |
| C．How big it covers | D．How much it weighs |
| A．with its sensors | B．with its muscles | C．through its hair | D．through its holes |
| A．the protection of the skin | B．the study of the skin |
| C．another name of the skin | D．another use of the skin |
| A．The beautiful skin | B．Strange human body. |
| C．An amazing part of the body | D．An interesting discovery |
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【推荐1】We human are only born with one set of eyes, so it’s our job to take care of them for our whole lives. The good news is that if we do a few simple things every day, we can keep our eyesight and reduce the risk of hurting our eyes.
Almost all doctors agree that we can improve and keep good eyesight by eating lots of fresh fruit and vegetables. Besides, we need to protect our eyes when we spend a lot of time in bright sunlight. The best way to do this is by wearing sunglasses that have 100% UV(紫外线) protection. What’s more, it is necessary to protect our eyes when we work with dangerous chemicals(化学品). For this reason we should always wear goggles(护目镜) in chemistry labs at work or at school. Finally, we should not spend too much time in front of the computer or television screen. That is why doctors advise if we have to use a computer for a long time, we should take a short break every fifteen or thirty minutes.
Keeping good eyesight is important. If we do these simple things, we can protect our eyes and reduce the chances of losing our eyes. As the popular English expression goes,“It's all fun and game, until someone loses an eye.” When people say this, they mean that losing an eye is a very terrible thing.
根据短文内容，选择最佳选项，并在答题卡上将选定答案的字母标号涂黑。
1. According to the passage, it’s ___________ to keep our eyesight.
| A．easy | B．useless | C．hard | D．hopeless |
| A．While watching TV. | B．While using a computer. |
| C．While staying in the sun. | D．While working in a chemistry labs. |
| A．We should eat lots of fresh fruit and vegetables. |
| B．We should take a short break every fifteen or thirty minutes. |
| C．We should not spend much time in front of the computer or TV. |
| D．We should do a few simple things every day to keep our eyesight. |
| A．Two. | B．Three. | C．Four. | D．Five. |
| A．Fun and Games with Our Eyes. | B．Caring for Our Eyes. |
| C．The Risk of Hurting Our Eyes. | D．Born with One Set of Eyes. |
【推荐2】
Finally, you finish all your schoolwork and sit back in your chair. Suddenly you feel a headache and realize your eyes are painful. What’s going on? Doctors say that many students are spending too much time in front of screens, especially during online classes. The following suggestions might help to protect your eyes. | |
THE 20-20-20 RULE This gives your eyes a break from long screen time. It suggests looking at something at least 20 feet away for 20 seconds after 20 minutes of work on the screen. You can then continue working without feeling pain. | ●Studies show that people blink (眨眼睛) less often when looking at a screen. Keep your eyes wet by blinking often or using eye drops. |
| ●Sit up straight about an arm’s length (长度) away from the screen. Make sure you’re looking down at your screen. Stand up and exercise often to avoid neck and shoulder pain. | |
| ●What about blue light blocking glasses (防蓝光眼镜)? They may look cool, but research shows that blue light isn’t the biggest cause of eye tiredness. So ask doctors before putting them on. | |
1. Who is the text written for?
| A．Parents. | B．Students. | C．Doctors. | D．Patients. |
| A．20 minutes, 20 feet, 20 times. | B．20 seconds, 20 times, 20 feet. |
| C．20 feet, 20 seconds, 20 minutes. | D．20 times, 20 minutes, 20 seconds. |
A． | B． | C． | D． |
| A．The reasons for eye tiredness. | B．The influence of online classes. |
| C．The importance of computer glasses. | D．The suggestions about eye protection. |
| A．Health. | B．Sports. | C．Culture. | D．Travel. |
【推荐3】
Eye Health Care Healthy habits mean healthy eyes. Here are some tips for better eye health.●Avoid looking directly at the sun. The sunlight is really bad for our eyes. ●Clean your eyes with clean cold water often. This is one of the best ways to keep eyes healthy. ●Relax eyes by keeping eye movements. Roll your eyes up and down, then side to side. Exercise 5 to 10 times a day. ●Keep a good distance (距离) from the computer screen—sit about 22—28 inches (英寸) away from it. ●Visit your eye doctor in a certain time. Doctors have some best tips to help stop much eye disease. |
1. How many tips does the passage have for protecting eyes?
| A．Four. | B．Five. | C．Six. | D．Seven. |
| A．direct sunlight | B．clean cold water | C．eye movements | D．long distance |
| A．5 inches | B．10 inches | C．27 inches | D．29 inches |
| A．Only cold water can keep your eyes healthy. |
| B．You should do eye movements as often as possible. |
| C．There will be no eye disease at all if you visit doctors. |
| D．To have healthy eyes you must have healthy habits first. |
| A．In a medical magazine. | B．In a notice. | C．In a cartoon book. | D．In a dictionary. |
When you cut yourself, you bleed. If a person loses a lot of blood, he will become ill and may die. Blood is very important.
When doctors understand how blood goes around inside the body, they try ways of giving blood to people who need it. They take blood from the healthy people and give it to people who need it.
But there are two problems. First, it does not always work.
There is another problem. To give blood of the right kind, doctors have to find a person of the right blood group.
We call a place to keep money a “bank”. We call a place to keep blood a “blood bank”. One day when you grow up, you may decide to give blood to a “blood bank”.
| A．People have always known that. |
| B．Often they can not find a person in time. |
| C．You can get money easily from the bank. |
| D．In this way, you may stop someone from dying. |
| E．Sometimes people die when they have blood transfusion. |
| F．The blood goes from the arm of the healthy person into the arm of the sick person. |
Do sugary drinks cause overweight？While we know that sugary drinks have calories（卡路里）, which are believed to cause overweight, many questions remain. For example, better？Do you need a sports drink after going to the gym？Here are the facts to some common misunderstandings.
Misunderstanding 1:Clear soda（无色汽水） is healthier than dark soda.
The truth: The dark color of teeth has something to do with the coloring （着色剂） in soda. Lisa R. Young, a professor of Nutrition at New York University said. But the big difference dark sodas is the caffeine content（咖啡因含量）. Since a bottle of soda, such as Coca—Cola and Sprite（雪碧）, has less caffeine than that in a cup of coffee, most soda drinkers probably don’t need to worry about what to choose.
Misunderstanding 2: If you need caffeine to cheer you up, you should choose an energy drink rather than coffee.
The truth: There are more sugar than caffeine in energy drinks such as Red Bull（红牛）. Energy drinks may be easier to drink. But a cup of coffee has between 95 and 200 milligrams （毫克）of caffeine while Red Bull has about 80 mg per the same amount, according to US medical research group Mayo Clinic.
Misunderstanding 3:If you go to the gym, you need a sports drink.
The truth: It would be easy to think that you need a sports drink any time you sweat（出汗）. But the truth is that the energy in your body won’t be used up until you’ve done more than an hour of training. So you only need to drink some water after a 45—minute exercise on the running machine.
1. There are ________ misunderstandings discussed in the passage.| A．one | B．two |
| C．three | D．four |
| A．Coca—Cola | B．Sprite |
| C．coloring | D．caffeine |
| A．The coloring in soda has something to do with the dark colors of people's teeth. |
| B．Soda drinkers don't need to make a hard decision according to the caffeine content. |
| C．Compared with coffee, Red bull is a better choice if people need a lot of energy. |
| D．With the energy in the body, people can do at least 60—mintue training . |
| A．technology | B．sports | C．health | D．advertisement |
【推荐3】“What’s the name of the man living next door? I can’t remember it right now.” Have you ever heard your grandparents ask questions like this? Usually, we think old people’s memories (记忆力) become bad because their brains (大脑) can’t work quickly. But a team of German scientists has a different idea.
“The human brain works slower in old age,” said scientist Michael Ramscar, “but only because they have kept much more information over time.”
The findings are a result of many computer simulations (模拟) of learning and memory. Scientists let the computers read words and learn new things each day. When the computer “reads” only so much, its result in memory tests is the same as that of a young man. But if the computer learns much more than that, its result is the same as that of an older man. It is slower because more information makes the computer’s database (数据库) grow and the computer has more data to work with—it takes time. This is the same as old people.
Think about this. A man knows two persons’ birthdays. Another man knows the birthdays of 2,000 people, but can only match the right man to the right birthday nine times out of ten. Can you say that the first man has a better memory than the second one? The fact is that “The larger the library you have in your head, the longer it usually takes to find a word,” Benedict Carey, a science reporter for the New York Times, wrote in a report about the study.
1. The writer uses the question at the beginning to ________.| A．make readers think of their friends |
| B．say that many people have bad memories |
| C．make readers interested in the passage |
| D．show why older people like asking questions |
| A．asking old people questions |
| B．reading books and some useful reports |
| C．following the lives of a group of old people |
| D．using computers to simulate man’s learning and memory |
| A．Because they have a very poor memory. |
| B．Because they are too old to remember things. |
| C．Because there is something wrong with their brains. |
| D．Because there is too much information in their brains. |
| A．Is It Better to Be Old or Young? | B．How Can Man Use Their Brains? |
| C．Do Old People Have Poor Memories? | D．What Are Scientists’ New Findings? |
There may be something in your food that you can't see and smell. But it could be killing you. It's called trans fat(反式脂肪).
Trans fat is usually taken from the hydrogenated( 氢化) vegetable oil. Food makers use this low-priced oil to make food stay fresh longer. It can be found in food such as cakes, fried food and so on. Studies have found that trans fat increases the risk of heart disease.
“Some countries have been stopping trans fat from being used, such as Denmark and a few states in the US. And it's really important that governments around the world change trans fat for healthier oils,” said Frieden, the head of the public health organization.
The WHO calls on governments to take some steps. These include changing trans fat for healthier oils, letting the public realize trans fat can have bad influence on people's health, and carrying out anti-tans fat laws.
If people stop eating foods made with trans fat, more than 17 million lives could be saved over the next 25 years.
1. Trans fat can be seen in our food according to the passage.2. Trans fat is added to food because it can stop food from going bad.
3. Trans fat can't be used in Denmark and some states in the US.
4. The WHO asked governments to let the public know less about trans fat.
5. This article mainly tells us to stay away from trans fat.
【推荐2】Discussion: As a junior high school student, do you need your parents or teachers to be your life mentor (导师)?
Student A: As teenagers, we always have trouble in our lives.
Our parents and teachers wish us to solve (解决) problems by ourselves. But for many reasons (原因), we can’t easily solve them. So it becomes necessary (必需的) for us to have a mentor when we need help.
Student B: I once had a good mentor, so I agree with this idea.
Mentors are not like teachers. They can give students very useful advice and help. Because they have lots of experience.
What’s more, students won’t feel too nervous because they can talk with their mentors freely.
Student Student C: It’s embarrassing for students to talk about their own problems. In fact, not everyone can do this. There might also be a generation gap (代沟) between students and their mentors.
Student D:
Maybe students can get useful advice from experienced mentors. But I think, the more experience you get from others, the less you will learn on your own. We should learn from our own experience. I like to have a life journey of my own with my own stories better.
1. For student A, having a life mentor is ________.| A．necessary | B．useless | C．nervous | D．exciting |
| A．Students A&B | B．Students B&C | C．Students C&D | D．Students A& D |
| A．wouldn’t truly understand him | B．might make him learn less on his own |
| C．would be very helpful to him | D．might be embarrassed to listen to him |
【推荐3】If you go into the forest with friends, stay with them. If you don’t, you may get lost. If you get lost, this is what you should do. Sit down and stay where you are. Don’t try to find your friends, let them find you. You can help them find you by staying in one place. There is another way to help your friends or other people to find you. You can shout or whistle (吹口哨) three times. Stop. Then shout or whistle three times again. Any signal (信号) given three times is a call for help.
Keep up shouting or whistling. Always three times together. When people hear you, they will know that you are not just making a noise for fun. They will let you know that they have heard your signal. They will give you two shouts or two whistles. When a signal is given twice, it is an answer to a call for help.
If you don’t think that you will get help before night comes, try to make a little house with branches (树枝). Make yourself a bed with leaves and grass.
When you need some water, you have to leave your little branch house to look for it. Don’t just walk away. Pick off small branches and drop them as you walk in order to go back again easily. When you are lost, the most important thing to do is to stay in one place.
1. If you get lost in the forest, you should ________.| A．try to find your friends | B．stay in one place and give signals |
| C．walk around the forest | D．shout as loudly as possible |
| A．Shouting here and there. | B．Crying twice. |
| C．Shouting or whistling three times together. | D．Whistling everywhere in the forest. |
| A．someone is afraid of an animal | B．people will come to help you |
| C．someone needs help | D．something terrible will happen |
| A．If you are lost in the forest, try to find you friends right away. |
| B．You can shout or whistle twice to call for help. |
| C．The most important thing to do is to stay in one place when you are lost. |
| D．We don’t need to do anything before night comes. |
| A．how to travel in the forest |
| B．how to spend the night in the forest |
| C．what you should do if you want to get some water |
| D．what you should do if you are lost in the forest |
