Next year, I will be in senior high school. I can’t believe________!

A.time went by how fast B.how fast time went by

C.what time went by D.what fast time went by

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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.

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A)根據(jù)短文內(nèi)容填表格，一空一詞

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(箭頭) on the computer screen and had to use the computer and arrows to show which direction was special.

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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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