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题型:阅读选择 题类:常考题 难易度:普通

江苏省姜堰市2017-2018学年八年级下学期英语期末考试试题(含小段音频)

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    When we exercise hard, we burn fat. But have you ever wondered where exactly the fat goes?

    Some doctors think that fat is changed into heat and given off in the air. Others think the body burns it. Some even joke that someone comes and takes it. That's why you always weigh less in the morning.

    Now a new study from Australia solves the mystery(迷). “The correct answer is that most of the fat is breathed (呼吸)out as CO2. It goes into the air.” says the study.

    Scientists followed the atoms (原子) in 10 kilograms of fat as they are lost. They found that 8.4 of those kilograms are breathed out as CO2 through the lungs (肺). The other weight, 1.6 kilograms,becomes water and leaves the body.

    “None of this is easy to understand because we can't see the CO2 we breathe out.” said the study's lead expert.

    Does that mean you can lose more weight by breathing more? It is not as easy as you think.

    Breathing more than the body's metabolic rate (新陈代谢速度) can make you uncomfortable. You may feel dizzy(眩晕的) and become unable to see, move or feel, according to the study.

    So how can people lose weight healthily? The key is to eat less and move more. You may have heard this many times. During a day, a 70kg person breathes out about 200g of CO2. So if the same person wants to lose weight, he or she can do some light exercise, for example, walking fast.This can help lose 240g of CO2.

(1)、Where is the new study from?
A、Japan. B、Australia. C、Canada. D、America.
(2)、According to the new study, where does our fat go when we exercise a lot?
A、The body burns it. B、Someone comes and takes it. C、It is changed into heat and given off in the air. D、Most of it is breathed out as CO2.
(3)、What will happen to people if they breathe more than the body's metabolic rate?
A、They will lose weight healthily. B、They will feel comfortable. C、They may become unable to move. D、They may become healthier.
(4)、Which of the following is the best way to lose weight?
A、Sitting still and breathing more. B、Sleeping a lot and breathing more. C、Eating less and exercising more. D、Eating more and doing some light exercise.
(5)、The passage mainly tells us ______.
A、where fat goes when we exercise B、why we can lose weight healthily C、how we should do some exercise D、what we should do to become fat
举一反三
回答下面5个问题,每题答案不超过5个词。

It is easy for many people to catch a cold in the springtime or fall. It makes us wonder if scientists can send a man to the moon, why can't they find a cure for the common cold? The answer is easy. There are actually different cold viruses out there. You never know which one you will get, so there isn't a cure for each one.

When a virus attacks your body, your body works hard to get rid of it Blood rushes to your nose and causes a block in it. You feel terrible because you can't breathe well, but your body is actually eating the virus. Your temperature goes up and you get a fever, but the heat of your body is killing the virus. You also have a runny nose to stop the virus from getting into your cells. You may feel very uncomfortable, but actually your wonderful body is doing everything it can to kill the cold.

Different people do different things to deal with colds. In the United States and some other countries, for example, people might have chicken soup to help them get over the cold. Some people take hot baths. Other people take medicine to stop different symptoms(症状)of colds.

There is one interesting thing to note一some scientists say taking medicine when you have a cold is actually bad for you. The virus stays in you longer because your body doesn't have a way to fight it and kill it Bodies can do an amazing job on their own. There is a joke, however, on taking medicine when you have a cold. It goes like this:

It takes about one week to get over a cold if you don't take medicine, but it takes only seven days to get over a cold if you take medicine.

下面文章中有五处需要添加小标题。请从以下选项(A、B、C、D、E 和F)中选出能填入空白处的最佳选项,其中一项是多余选项。

What would you do if you see someone hurt badly? The following will help you to learn some important skills to give casualty (伤员) first aid.

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The first and most important thing you must do is to make sure the place is not dangerous. Can you see anything that might not be helpful to you? Can you hear anything that could be dangerous?

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When you see someone has been hurt, you may feel scared. If you feel yourself starting to be nervous, try to calm yourself down. For example, talk to people you trust about what happened, and you'll be relaxed.

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When someone needs first aid, talking to him will help him to stay calm and feel safe. Even if he does not answer you, you should still tell him what you are doing. It will let him know that you are helping him.

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Sometimes, the casualty will need more help than you are able to give. The best thing you can do is to phone some people for help. They can give you some useful advice or offer you some help.

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There are also many other things to do. Try your best to help the casualty. Asking people around you for help is really better than waiting for doctors. Besides, you can also try to keep in touch with his families and friends.

A. Calling for Help.

B. Being Calm.

C. Shouting for Help.

D. Keeping Talking.

E. Staying Safe.

F. Doing Your Best.

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