7. have black eyes and black hair.
A. Both of we B. We both
C. Both us D. We are both
培优口算题卡系列答案科目：初中英语 来源： 题型：
假如你和家人上周末去了北京胡同，请你根据下面的提示写一篇短文，描述一下你们 在那里所做的事情、感受以及天气状况等。可适当发挥。词数50左右。 参考词汇：
sunny and warm, a Beijing Hutong, friendly, take photos，go shopping, Beijing Duck, delicious, tired, happy
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科目：初中英语 来源： 题型：
Ninety percent_students use the Internet_ least three times
a week.
A. for； at B. of； for C. on； at D. of； at
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科目：初中英语 来源： 题型：
—How often do you drink milk?
—_. I don’t like it.
A. Often B. Always C. Hardly ever D. Sometimes
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Do you think sitting and studying all the time will improve your grades? Think again. Getting some exercise may help，too.
New research with older people suggests that taking regular (规律的）walks helps them pay attention(注意）better than if they didn’t exercise.
Previous research had shown that mice learn, remember, and pay attention better after a few weeks of working out on a running wheel. Mice that exercise have greater blood(血）flow to the brain than those who don’t. Their brain cells also make more connections(联系）•
Neuroscientists (神经系统科学家)from the University of Illinois at Urbana-Champaign wanted to find out if the same thing is true for people. First, they measured the physical fitness of 41 adults, ages 58 to 77，after each person walked 1 mile. Then， those people looked at arrows(箭）on a computer screen and had to use computer keys to show which way one particular arrow was pointing.
Adults who were physically fit were faster at the arrow task, and their answers
were just as right as the less-fit persons, the researchers found. The fitter persons also had more blood flow to a part of their brain. So, even going for a walk every 2 or 3 days for just 10 to 45 minutes can help. That should be good news for your grandparents. The effects of exercising on the brains of younger people haven’t been studied yet. Still, it can’t hurt to take some breaks and go for a walk or run around with your friends. You might even do better in school.
根据短文内容，回答下列问题。
36. What can taking regular walks help older people to do?
37. What animal is tested in previous research?
38. How many people were tested by neuroscientists from the University of Illinois?
39. What can be good news for grandparents?
40. Can exercise help you study according to the passage?
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8. Taking buses in Beijing is_than taking a taxi.
A. more cheap B. much cheaper
C. a little cheap D. less cheaper
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9. Finally, we decided_look for a place for lunch.
A. on B. to C. at D. with
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