题目列表(包括答案和解析)
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The kind of exercise that reduces fat is called aerobic exercise
(增氧健身法). Aerobic exercises have walking, running, swimming, bicycling. During aerobic exercise, the heart beats faster and breathing is heavier. The more oxygen you breathe in combines with fat and slowly bunts the fat away. Aerobic exercise (20 to 30 minutes of exercise three or more times a week) also raises the body’s metabolism(新陈代谢); the body bums more calories(卡)all the time?--even at rest!How Much to Exercise
To improve health and bum fat, people should exercise 20 to 30 minutes three to five times a week. Most children usually have no problem finishing this since their activity levels tend
(趋向)to be higher than adults. But if your children, or perhaps your whole family, are over weight, they may need more exercise. This means aerobic exercise?--faster heart rate, increased breathing, muscles working. Don’t let your children or yourself overdo it. A good rule is the talking / singing rule: if they are breathing too heavily to sing, but can still talk, the intensity(强度)is just about right.根据短文内容判断正(
T)误(F)(1) If you do aerobic exercise, you can lose weight.
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(2) According to the passage, eating is also an aerobic exercise.
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(3) Your heart beats slower and breathing is heavier when you ride a bike.
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(4) Most children should finish 20 to 30 minutes of aerobic exercise three or more times a day.
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(5) Don’t let your children or yourself overdo it.
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根据短文内容,判断下列句子的正误,正确的用“T”,错误的用“F”。(每小题1分,共5分)
Today more and more people are using refrigerators. Some are big, others are small. Big ones have two or three doors. Such refrigerators can not only keep the food cold and fresh, but also make ice and freeze the food. However, small ones usually have one door and can only keep things cold and fresh.
There are also refrigerators that are friendly to the environment. In the 1970s, the world was in energy crisis(危机). Refrigerators use too much energy. So people began to think of ways to improve it . At last a kind of new refrigerator was made. They use very little energy, but they’re too expensive. They cost twice or three times more than the ones that we use at home. However, people believe they will be cheaper and cheaper. As a result, they will be more and more popular.
In the future, there will be refrigerators that can do more than we can imagine. They are called smart refrigerators(智能冰箱) . They have tiny computers inside, with their screens on the door. They can show us what food is inside. They can also tell us what food to buy.They can even let us know what food to eat when we input the necessary health information. The more surprising thing is that they can do shopping for us when they are connected(连接) to the supermarket.
【小题1】Small refrigerators can not only keep the food cold but also freeze the food.
【小题2】Refrigerators that use very little energy are more expensive.
【小题3】Friendly refrigerators will be popular some day.
【小题4】Refrigerators that keep the food fresh are smart refrigerators.
【小题5】We can have a “talk ” with smart refrigerators.
补全短文。(共10小题;每小题1分,计10分)
用方框内所给单词的适当形式填空,使短文完整、通顺。
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thousand, many, change, help, make, in, close, they, also, little |
Saving electricity and water is important in our life. There are 1. little things for us to do at home to help save the Earth. They’re small, but 2. of people do the same thing and 3. a great difference. By making some small 4. to the way you do things at home, you are helping our planet day by day.
You can spend 5. and improve your health better at the same time, so
6. to save the environment is a good exercise!
You can use windows to make the house good to live in. You can keep windows and doors 7. to keep the house warm in winter and open in summer. The wind will often keep you as cool as 8. the open air.
And you must do something to save water. The water that you use in the kitchen can
9. be used to wash the rice or water the flowers, and it’s very good for 10. . Please always remember to turn off the lights when you leave.
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