【单选题】
It Walking to Exercise the Brain
Do you think sitting and studying all the time will improve students’ grades? Think again. Getting some exercise may help, too.
New research with older people suggests that taking regular walks helps them pay attention 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 flow to the brain than those who don't. Their brain cells also make more connections.
Neuroscientists (神经科学家) 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, participants looked at arrows 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 accurate as their less-fit peers, the researchers found. The fitter participants also had more blood flow to a part of their brain responsible for paying attention and making decisions.
In a second study, 15 elderly people who completed a 6-month aerobic-training（有氧运动）course were faster at attention tasks compared with 14 seniors who just did stretching and toning（韵律操）exercises for the same amount of time.
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 the elderly.
The effects of exercising on the brains of younger people haven’t been studied yet. Still, it can’t hurt to take occasional breaks and go for a walk or run around with friends. Whatever you do, though, don’t try to read and walk at the same time. You could end up hurting yourself!
31.Walking regularly helps elderly people
A. lose weight.
B. become happier.
C. concentrate better.
D. look younger.
32.After taking exercise for a few weeks, the mice were found to have
A. higher blood pressure.
B. faster heartbeat.
C. more blood flow to the brain.
D. better appearance.
33.The first study on 41 elderly people found
A. the less-fit participants did arrow tasks faster.
B. the fitter participants did arrow tasks faster.
C. the less-fit participants gave more accurate answers.
D. the fitter participants gave more accurate answers.
34.It can be good for health when one takes a walk every 2 or 3 days for at least
A. 3 minutes.
B. 45 minutes.
C. 30 minutes.
D. 10 minutes.
35.It is suggested in the last paragraph that people should
A. run around once a week.
B. not read and walk at the same time.
C. go for a walk every day.
D. not hurt their friends while exercising.
网考网参考答案：C、C、B、D、B
网考网解析：
它散步锻炼大脑 你觉得坐着学习所有的时间会提高学生的成绩？再想想，去锻炼可以帮助，同样， 新的研究与老年人表明，服用常规散步有助于他们注重比，如果他们没有运用好， 以前的研究表明，小鼠学习，记忆，和几个星期的工作了一个跑轮后要注意好，锻炼小鼠有更大的血液流向大脑比那些谁不这样做，他们的脑细胞也使更多的连接， 伊利诺伊大学厄巴纳 - 香槟分校的神经学家（神经科学家）想看看同样的事情是真实的人，首先，他们测量了41名成人的体质，年龄58至77，之后每个人都走了1英里然后，参与者看着电脑屏幕上的箭头，不得不使用电脑按键，显示哪条路一个特定的箭头指着， 成年人谁是身体健康是更快的箭头任务，他们的回答都是一样精确，它们不太适合同龄人，研究人员发现，钳工参与者也有更多的血液流向大脑，负责关注，使一部分决策， 在第二项研究中，15的老人谁完成了6个月的有氧训练（有氧运动），当然是更快的注意力任务与14年长谁只是没拉伸和色调（韵律操）练习的时间相同的量相比， 所以，即使是出去散步，每2〜3天仅10至45分钟可以提供帮助，这应该是个好消息，老人， 行使对年轻人的大脑的影响还没有被研究的是，尽管如此，它不能伤害采取偶尔休息去散步或与朋友跑来跑去，不管你做什么，不过，不要试图阅读和散步的同时，你可能最终伤害自己！ 31，经常散步可以帮助老人 A，减肥， B，更快乐， C，更好地集中精力， D，看起来更年轻， 32，服用后锻炼了几个星期，小鼠中发现有 A，血压升高， B，心跳快， C，更多的血液流向脑部， D，更好的外观， 33，41的老人在第一项研究发现， A，在不太合适的参与者确实箭头任务的速度更快， B，钳工参与者没有箭头的任务更快， C，欠合适的参与者提供了更多准确的答案， D，钳工参与者提供了更多准确的答案， 34，它可以当一个人散步，每2〜3天，至少是对健康有好处 A，3分钟， B，45分钟， C，30分钟后， D，10分钟， 35，有人建议在最后一段，人们应该 A，奔波一个星期一次， B，不能读取和行走的同时， C，每天都去散步， D，不伤害自己的朋友，而锻炼 查看试题解析出处>>
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