Question

【题目】Are you preparing for a big test? If so, you may want to go to play some basketball in between hitting the books. Doctors are starting to find more and more information that suggests a connection between exercise and brain development. Judy Cameron, a scientist at Oregon Health and Science University, studies brain development. According to her research, it seems that exercise can make blood vessels, including those in the brain, stronger and more fully developed. Dr. Cameron is sure that this allows people who exercise to think better. As she says, “While we already know that exercise is good for the heart, exercise can actually cause physical changes in the brain.”

The effects of exercise on brain development can even be seen in babies. Babies who do activities that require a lot of movement show greater brain development than babies who are less physically active. Even a little movement can show big results. Margaret Barnes, a scientist, also believes in the importance of exercise. She thinks that many learning disabilities that children have in primary school or high school can result from a lack of movement as babies. Babies need movement that encourages and excites their five senses. They need to set up a connection between motion and memory. In this way, as they get older, children will begin to connect physical activity with higher learning,” says Margaret.

Older people can develop their brains as well. Cornell University studied a group of seniors who have a short-term memory increase of up to 40 percent after exercising just three hours a week. The exercise does not have to be very difficult, but it does have to increase the heart rate. Also, just like the motion for babies, exercise for older people should not be too simple. Learning some new skills or actions, such as with yoga or tai-chi helps to open up memory paths in the brain that may not have been used for a long time. For most people, any type of physical activity that increases the heart rate is helpful. The main aim is to increase the brain’s flow of blood. And your brain can benefit from as little as two to three hours of exercise a week.

【1】What is the main idea of this passage?

A. Exercise makes people strong.

B. How one can get good scores in a test.

C. Exercise can help the brain develop.

D. Brain can change one’s memory.

【2】Why is yoga suggested for the old?

A. Because it does good to the joints of old people.

B. Because it does not increase the heart rate.

C. Because it can help learn new actions.

D. Because it can be done in groups.

【3】For most people, the smallest amount of exercise required to gain any benefit is _____.

A. two hours per week B. 40 hours per week

C. three hours per day D. 40 hours per month

Answer 1

【答案】two to three hours of exercise a week A选项two hours per week

根据事实细节，推断合理信息。推理题要求在理解原文表面文字信息的基础上，作出一定判断和推论，从而得到文章的隐含意义和深层意义。推理题所涉及的内容可能是文中某一句话，也可是某几句话，但做题的指导思想都是以文字信息为依据，既不能做出在原文中找不到文字根据的推理，也不能根据表面文字信息做多步推理。也就是说，要做到判断有据, 推论有理, 忠实原文。切忌用自己的观点代替作者的本意，切忌片面思考，得出片面结论。

【解析】 考查健康类文章。本文叙述了运动有助于大脑的生长。

【1】C

主旨大意题。根据第一段As she says, “While we already know that exercise is good for the heart, exercise can actually cause physical changes in the brain.”第二段第一句“.The effects of exercise on brain development can even be seen in babies”和第三段的第一句“Older people can develop their brains as well.”可知，本文从各方面阐述了运动有助于大脑生长，故选C项。

【2】C

推理判断题。第三段中Learning some new skills or actions, such as with yoga or tai-chi helps to open up memory paths in the brain that may not have been used for a long time.．学习一些新的技能或动作，比如瑜伽或太极，有助于打开大脑中可能很长时间没有使用的记忆路径。分析句意可知对于老年人来说瑜伽有助于帮助记忆新的东西。分析选项可知，C为正确答案

【3】A

【解题剖析】此题属于推理判断题中的（4）根据事实细节，推断合理信息。答案需要从文章的For most people, any type of physical activity that increases the heart rate is helpful….And your brain can benefit from as little as two to three hours of exercise a week 进行推断。

【答案定位】根据本文最后一段最后一句“For most people, any type of physical activity that increases the heart rate is helpful….And your brain can benefit from as little as two to three hours of exercise a week”可知，对于大多数来说，大脑可以从每周两到三小时的运动中获益。

【推理关系】题干For most people, the smallest amount of exercise required to gain any benefit is _____..文章内容And your brain can benefit from as little as two to three hours of exercise a week