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题型:阅读理解-单选 难度:0.4 引用次数:170 题号:11765373

Human bodies are a miracle(奇迹). Let's look at one example first.

How can you tell whether something is hot or cold? You touch it. There are things in your fingers that help you to know whether something is hot or cold. They're called nerves(神经). You have them all over your body. Nerves react(反应) to things we touch and send messages(消息)through our bodies to our brain, telling us how something feels.


If you touched the edge of a knife, how would that feel? It would hurt. If you didn't have nerves, you would still bleed, but it wouldn't hurt. You wouldn't be able to feel it. So, why are nerves a good thing? We would hurt ourselves a lot more without them.


Imagine that you're making a snack in the kitchen. You put your hand down on the stove. After a minute or two, you see some smoke rising in the air. It's your hand! It's burning! If you had no nerves, you wouldn't be able to feel the heat from the stove. Then you would have to go to the hospital.

We had no nerves, the weather wouldn't affect(影响)us, or would it? If it were below 0℃, you wouldn't feel how cold it was. But if you went outside without protecting(保护)your body from the cold, you could get very sick or die. Nerves help us stay safe and healthy.

There are many other parts in our body that make us a miracle…

1. Nerves work by ________________.
A.touching somethingB.showing brains what to do
C.telling the hot from the coldD.sending messages to the brain
2. With the help of nerves, we _______________.
A.get hurt lesson oftenB.don’t feel a lot of pain
C.don't bleed that muchD.stay away from hospitals
3. The writer uses the examples of the knife and the stove to show ___________.
A.why nerves keep us from heatB.how our fingers react to smoke
C.when people shouldn't use knivesD.what it is like if we have no nerves
4. What might the writer write about next?
A.Ways to protect ourselves.B.Different nerves in our body.
C.Other great parts in our body.D.Miracles made by our nerves.

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阅读理解-单选(约440词) | 较难 (0.4)
【推荐1】
In summer everybody needs to be careful with the sun. Do you know how to spend time in the sun without burning or damaging your skin? Read the ten rules below. Some of them are RIGHT and the others are WRONG.
• Always wear a baseball cap. It protects you from the sun and looks cool, too.
WRONG You need to wear a hat, but choose your hat carefully. Baseball caps protect your eyes, but they don't protect your ears or your neck. Use a proper sun hat.
• Use sun cream. You need to put it on at least twenty minutes before you go out.
RIGHT Sun cream starts to work twenty minutes after you put it on.
• Put sun cream around your eyes and on your eyelids(眼睑;眼皮) to protect them from the sun.
WRONG Sun cream hurts the eyes. Wear sunglasses instead.
• You only need a little sun cream. Too much sun cream is bad for your skin.
WRONG You need to use a lot of sun cream. The sun makes your skin dry. Sun cream moisturizes(滋润) and protects it.
• Put more sun cream on every two hours.
RIGHT You need to put sun cream on often, especially when you're swimming.[来源:Zxxk.Com]
• You need to use sun cream even on a cloudy day in summer.
RIGHT The sun can damage your skin even on a cloudy day.
• On a hot sunny day, wear light-coloured clothes — white or yellow are best.
WRONG Light-colored clothes don't protect you from the sun. The best solution is to wear dark-coloured clothes.
• You need to spend time in the sun for healthy skin.
RIGHT You need to spend time in the sun to get enough vitamin D for healthy skin and bones(骨头), but don't forget to use sun cream. Without sun cream, you have a bigger risk(danger) of skin cancer(癌症).
• You need to spend a lot of money to get a good sun cream.
WRONG There are many different kinds of sun cream. Find the one that is best for you. Expensive ones are not always better than cheap ones. Use a sun cream labeled(标明) SPF30+ and it should give you the same protection as one that is more expensive.
• In summer, people with dark skin can also get burnt.
RIGHT People with fair skin and blonde or red hair need to be extra careful and use a high factor sun cream(高效护肤霜). People with fair skin(白皙皮肤) do need to protect their skin from the sun, too.
1. What is the best to wear to protect your skin from the sun?
A.A baseball hat and light-coloured clothes.
B.A sun hat and light-coloured clothes.
C.A baseball hat and dark-coloured clothes.
D.A sun hat and dark-coloured clothes.
2. What is the right way to use sun cream?
A.Use a little and often.
B.Use a lot every two hours.
C.Use a lot twice a day.
D.Use a little every two hours.
3. Why is it important to spend time in the sun?
A.You can drink more water.
B.It's a chance to wear cool sunglasses.
C.It improves dark dry skin.
D.It helps keep your skin and bones healthy.
4. What is the purpose of the above passage?
A.To make people buy sun cream.
B.To tell the importance of healthy skin.
C.To give people advice on summer skin care.
D.To show people how to dress properly in summer.
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阅读理解-单选(约230词) | 较难 (0.4)

【推荐2】

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Good health needs good sleep. Going to bed before you’re tired. Don’t eat or read in bed. Go to bed at the same time every day before midnight,and get up early in the morning at the same time. Your body likes routine (常规) for a good night’s sleep.

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Studies show that a cold or the flu virus (病毒) can live on our hands for a long time. So wash all parts of your hands often with soap and water. For more ways to prevent (阻止) the spread (传播) of the flu, please call Health Line at 1800-848-1313.

Oral Health

Brush your teeth twice a day and visit the dentist at least once a year. The mouth is a mirror of disease. The oral examination is not only for the health of teeth, but the whole body. For more of it, please visit www. mydr. com. cn.

Fit for Life

Studies show that many diseases have something to do with (与……有关) fewer or no physical (身体的) activity. Try to do exercise for 30 minutes a day, 5 days or more a week. For more information, please call Health Line at 1800-438-2000.


根据材料内容,选择正确答案
1. If you want to get a good sleep, you’d better ________.
A.go to bed after you’re tiredB.go to sleep at midnight
C.follow the bedtime routineD.eat something or read in bed
2. To prevent a cold or flu, it’s good for you ________.
A.to clean your fingers oftenB.to brush your teeth twice a day
C.to get up early every morningD.to wash all parts of your hands
3. You should visit the dentist at least once a year, because ________.
A.the oral examination is necessaryB.you don’t often brush your teeth
C.some diseases may be in the mirrorD.you don’t have a good night’s sleep
4. Studies show that many diseases have something to do with ________.
A.having no oral examinationB.wash hands with cold water
C.sleeping too late sometimesD.doing few physical activities
5. The meaning of the underlined (下划线的) word “oral” is ________.
A.口服的B.口腔的C.牙齿的D.平常的
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阅读理解-单选(约390词) | 较难 (0.4)
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【推荐3】There are always lots of strange stories about protecting your eyes. For example, you might have been told that you’d go blind from reading in the dark, but you could make up for it by eating carrots.

This is just one of the wrong ideas you may have heard of. Below teens has picked out scientific explanations for three mistakes the people often make about eyes. Let’s take a look.

Can eating carrots improve your eyesight?   

Carrots are rich in Vitamin A, which is important and necessary for your eyes’ general health. Vitamin A helps eyes to make light into signals, allowing people to see in low light conditions. However, eating more carrots doesn’t help you see better. Some carrots will help, but a large number of carrots will not give you superhuman vision or allow you to get rid of your glasses.

If your parents have bad eyesight, will you have bad eyesight, too?   

Myopia (近视)can be passed from parents to children. A study by the Americans Optometric Association found that if both parents are myopia, there is a 33 to 60 percent chance that the child is. For children who have one parent with myopia, the chance is 23 to 40 percent, and it’s down to 6 to 15 percent for kids with non-myopia parents. So no matter how bad your parents’ eyesight is ________

Is it true that people who are color blind can’t see colors?   

Color blindness doesn’t mean that someone can’t see colors at all, like a black and white movie. It means that someone has difficulty telling some colors apart, usually green and red or blue and yellow. Color blindness is usually a condition caused by not having color cells(细胞). If the cells don’t respond(反应)in the right way to differences in wavelengths of fight, color blindness happens. There are different levels of color blindness. Some people cannot tell the difference between colors in dim(昏暗的)light, while others have difficulty in any light. In the most serious form of color blindness, everything is seen in shades of grey.

1. Which is the RIGHT idea about eating carrots according to the passage?
A.Eating carrots doesn’t help people see better at all.
B.People need to eat as many carrots as possible.
C.Eating carrots is good for eyes, but people don’t need to eat a lot of them.
D.Eating a lot carrots is only good for those who work in low light condition.
2. Which of the following can be put in the ________?
A.you must be myopia.
B.you still have a chance having good eyesight.
C.you must have a good eyesight.
D.you should protect your eyes.
3. According to the passage, how does the writer describe color blindness?
A.Most people who are color blind can only see grey.
B.Not having color cells can cause color blindness.
C.Those who can’t tell green from red are not really color blindness.
D.Most people who are color blind can only see black and white.
4. What’s the best title of this passage?
A.Misunderstanding about EyesB.Advice on Protecting Your Eyes
C.Ways to Improve Your VisionD.Reasons for Color Blindness
2022-11-09更新 | 88次组卷
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