With China’s large population and increasing urban(城市的)space, the cost of electricity is rising in cities. So the Chinese government is preparing to send the world’s first artificial(人造的)moon to space.

The man-made moon is, in fact, a satellite. It carries a huge space mirror so that it can throw back sunlight to the Earth. The moon will fly about 500 kilometres above Chengdu, a south-western city of China, and work like the Moon at night. Since it runs much closer to the Earth than the Moon, it’s much brighter and there will be no need to use street lights in the city. According to scientists, Chengdu can save around 174 million dollars in electricity if the man-made moon brightens 50 square kilometres of the city.

For now, the artificial moon is still going through testing. Although it has many advantages, quite a lot of people think that creating more artificial light is harmful to the environment, as light pollution is a growing problem in our modern world. Actually, there is no need to worry. Chinese scientists say the mirror on the moon can be controlled, so they can decide its direction, brightness and so on. They can even turn it off when needed. Moreover, when the man-made moon works, people will see only a bright star above. It won’t be a giant moon as imagined.

Several countries, including China, are all looking to use energy from space, and artificial moons have been under discussion for some time. In 1999, Russia tried sending a space mirror into space, but it failed. And later the project was cancelled, according to the New York Times. And now, it seems that space light has come closer.

1.China will send the man-made moon to space to __________.

A.study the Moon B.explore space C.save energy D.protect the Earth

2.What is the second paragraph mainly talking about?

A.How the man-made moon works. B.How the man-made moon was created.

C.How scientists control the man-made moon. D.How the man-made moon throws back sunlight.

3.What can we learn about the man-made moon from the passage?

A.It looks huge from the Earth. B.Three will be sent to space in 2020.

C.It is designed to work at night only. D.China is the first country to send it to space.

4.In which column(专栏)of a newspaper can we probably find the passage?

A.NATURE. B.ENVIRONMENT. C.SOCIETY. D.SCIENCE.

Everyone gets a headache sometimes. But how much do you know about __________? What may cause them? And what should we__________if we have a headache? When should we go to see a__________? Let’s talk something _________ them.

The headache is not a disease(疾病), but it may show that something in our body is wrong. We may have ___________ than one headache each month.

Usually a __________ or some other illnesses may cause headaches. As we all know, when we have a cold, we often have a __________and a sore __________ at first. When you feel worse and __________ your temperature, you probably find you have a fever,__________then the headache comes. Besides, we may get a headache when we work too hard. We may get a headache when we exercise on an empty (空的)__________ . We may get a headache when we don’t get enough __________. When we have a headache, we should __________ and rest. We should have a good sleep. We shouldn’t take __________ exercise if we are tired. If we__________ have headaches, we need to see a doctor.

1.A.toothaches B.stomachaches C.headaches D.backaches

2.A.did B.to do C.doing D.do

3.A.doctor B.teacher C.worker D.hospital

4.A.about B.with C.at D.in

5.A.less B.little C.more D.most

6.A.blood B.fever C.break D.death

7.A.headache B.toothache C.medicine D.cough

8.A.head B.throat C.neck D.foot

9.A.make B.shake C.show D.take

10.A.or B.but C.and D.now

11.A.stomach B.tooth C.neck D.head

12.A.sleep B.food C.exercise D.medicine

13.A.take a break B.see a dentist C.lie down D.take exercise

14.A.too much B.much too C.too many D.many too

15.A.never B.often C.seldom D.sometimes

A)根据短文内容填表格,一空一词

Taking more walks

Sitting and studying all the time will raise your grades. Getting some exercise may help, too. New scientists say that taking walks makes kids pay attention better.

Earlier research report had shown that mice learn, remember, and pay attention better after they exercise on a running wheel for several weeks. Mice which exercise have more blood run to the head than those who don’t. And they can think faster.

Scientists from University of Illinois at Urbana-Champaign wanted to find out if the same thing is true for humans. First, they examined the health of 41 adults, aged 58 to 77, after each person walked 1 mile. Then, they input their information onto the computer and worked out the results. They looked at arrows(箭头) on the computer screen and had to use the computer and arrows to show which direction was special.

Adults who were healthy were faster at the arrow task, and their answers were just as right as those who were less healthy, the scientists found. The healthy persons also had more blood run to a part of their head responsible for paying attention and making decisions.

In a second study, 15 old people who finished a 6-month training class were faster at attention tasks compared with 14 students who did few simple exercises for the same amount of time.

So, even going for a walk every 3 days for just 10 minutes can help. That may be good news for your grandparents as well. The results of exercising on the brains of younger people haven’t been studied yet. Still, it’s useful to take unusual study breaks, go for a walk or run with your friends. You might even do better in school after that.

Taking more walks

How to raise your grades

Sitting and studying for a long time will raise your grades. Getting some exercise is also 1.. For example, walking 2. kids’ attention.

Why walks

help

Earlier research report had shown that mice learn, remember, and pay attention better after several weeks of 3.. More blood can make them think faster.

The special

research on humans

①Scientists wanted to find out 4. the same thing is true for humans or not. First, they examined the health of 41 adults, after they walked 1 mile. Then, they looked at 5. on a computer and study which direction was special.

②The scientists found that 6. adults were faster at the arrow task. More blood runs to a part of the persons’ head responsible for 7. attention and making decisions.

③In another study, 15 old people who finished a period of training class can think faster than the students who did few 8. exercises for the same time.

Conclusion

Even going for a walk twice a week for just ten minutes can help. 9. that’s good news for your grandparents as well. The results of exercising on the brains of the young haven’t been studied yet. But taking unusual study breaks, 10. or running with your friends may also help you raise your grades in school.

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