题目内容

4.How much physical activity do you get?As a teenager,physical activity is important,not just for your future health but for looking and feeling your best now.How active you are early in life may affect how ableminded you are late in life.That was the finding of a new study of cognitive impairment (认知障碍),or a loss in mental abilities.
The study involved more than nine thousand women in the United States over the age of sixtyfive.They answered questions about their level of physical activity as teenagers and at age thirty,fifty and late in life.
Laura Middleton of the Sunnybrook Health Sciences Center in Canada led the study.Laura Middleton said,"People who were physically active on a regular basis had lower risk of cognitive impairments in late life.And it seemed that teenage physical activity was particularly important in terms of the prevention of cognitive impairments."
Laura Middleton noted two longlasting effects that physical activity can have on teenagers.Exercise could help strengthen the blood vessels(血管) that carry blood and oxygen to the brain.Also,physical activity is known to improve the brain's ability to repair itself.Moreover,she noted that doing exercise is good for psychological development.
The study is in the Journal of the American Geriatrics Society.Women who said they were physically active even once a week showed less cognitive impairment as measured by a test.There was not a strong link between the amount of physical activity and the seriousness of impairment.But the link was strongest among those who were active as teenagers.
Laura Middleton says other studies of exercise and cognitive skills have found a stronger link in women than in men.Still,she says,there is no reason to suggest that the finding about teenage physical activity should not apply to men as well.
21.The passage mainly talks about the fact thatD.
A.women are generally more active than men
B.teenagers today are involved in more physical activity
C.people's level of physical activity varies at different ages
D.physical activity in teens is linked to mental skills in late life
22.What do we know about the study?C
A.People surveyed are all physically active.
B.It was carried out online.
C.Most people surveyed are elderly ladies.
D.It is a worldwide study.
23.We can infer from the last paragraph thatB.
A.men's cognitive skills are not related to the amount of exercise
B.male teenagers should also get involved in physical activity
C.men have greater cognitive skills than women
D.men do more physical exercise than women
24.This passage is most probably taken fromC.
A.a science book 
B.a personal diary
C.a health report
D.a travel magazine.

分析 本文是一篇科教类阅读,属于研究报告.你有多少身体运动?作为一个青少年,身体运动很重要,不仅仅是为了你未来的健康,而是为了寻找和感受你现在最好的一天.本文主要讨论的是早期运动生活可能会影响到你在生活后期的能力.

解答 21.D.细节理解题.根据How active you are early in life may affect how ableminded you are late in life.可知,本文主要讨论的是早期运动生活可能会影响到你在生活后期的能力.故选D.
22.C.细节理解题.根据The study involved more than nine thousand women in the United States over the age of sixtyfive.可知,大多数受访者都是年长的女士们.故选C.
23.B.推理判断题.根据there is no reason to suggest that the finding about teenage physical activity should not apply to men as well.可知,男性青少年也应该参与体育活动.故选B.
24.C.推理判断题.阅读全文,根据文章内容可知,这篇文章主要围绕一项关于早期运动生活可能会影响到你在生活后期的能力的研究,应该源于一份健康报告.故选C.

点评 本文是一篇科教类阅读,题目涉及多道细节理解题,推理判断题.做题时学生应仔细阅读原文,把握文章主要内容,联系文章上下文内容并结合所给选项含义,从中选出正确答案,一定要做到有理有据,切忌胡乱猜测.

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