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The popular notion that older people need less sleep than younger adults is a myth, scientists said yesterday.While elderly people (1) to sleep for fewer hours than they did when they were younger, this has a(n) (2) effect on their brain’s performance and they would benefit from getting more, according to research.Sean Drummond, a psychiatrist (心理医生) at the University of California, San Diego, said that older people are more likely to suffer from broken sleep, while younger people are better at sleeping (3) straight through the night.More sleep in old age, however, is (4) with better health, and most older people would feel better and more (5) if they slept for longer periods, he said."The ability to sleep in one chunk (整块时间) overnight goes down as we age but the amount of sleep we need to (6) well does not change," Dr Drummond told the American Association for the Advancement of Science conference in San Diego."It’s (7) a myth that older people need less sleep. The more healthy an older adult is, the more they sleep like they did when they were (8) . Our data suggests that older adults would benefit from (9) to get as much sleep as they did in their 30s. That’s (10) from person to person, but the amount of sleep we had at 35 is probably the same amount as we need at 75."A．alertB．associateC．attractingD．clingE．continuingF．definitelyG．differentH．efficientlyI．formallyJ．functionK．mixedL．negativeM．sufficientN．tendO．younger （10）处应填（）
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What determines the kind of person you are What factors make you more or less bold, intelligent, or able to read a map All of these are influenced by the interaction of your genes and the environment in which you were (1) . The study of how genes and environment interact to influence (2) activity is known as behavioral genetics. Behavioral genetics has made important (3) to the biological revolution, providing information about the extent to which biology influences mind, brain and behavior.Any research that suggests that (4) to perform certain behaviors are based in biology is controversial. Who wants to be told that there are limitations to what you can (5) based on something that is beyond your control, such as your genes It is easy to accept that genes control physical characteristics such as sex, race and eye color. But can genes also determine whether people will get divorced, how (6) they are, or what career they are likely to choose A concern of psychological scientists is the (7) to which all of these characteristics are influenced by nature and nurture (教育), by genetic makeup and the environment. Increasingly, science (8) that genes lay the groundwork for many human traits. From this perspective, people are born (9) like undeveloped photographs: The image is already captured, but the way it (10) appears can vary based on the development process. However, the basic picture is there from the beginning.A．abilitiesB．achieveC．appealD．complaintsE．contributionsF．displayedG．essentiallyH．eventuallyI．extentJ．indicatesK．proceedsL．psychologicalM．raisedN．smartO．standard （8）处应填（）
Walking, if you do it vigorously enough, is the overall best exercise for regular physical activity. It requires no equipment, everyone knows how to do it and it carries the (1) risk of injury. The human body is designed to walk. You can walk in parks or along a river or in your neighborhood. To get (2) benefit from walking, aim for 45 minutes a day, an average of five days a week.Strength training is another important (3) of physical activity. Its purpose is to build and (4) bone and muscle mass, both of which shrink with age. In general, you will want to do strength training two or three days a week, (5) recovery days between sessions.Finally, flexibility and balance training are (6) important as the body ages. Aches and pains are high on the list of complaints in old age. The result of constant muscle tension and stiffness of joints, many of them are (7) , and simple flexibility training can (8) these by making muscles stronger and keeping joints lubricated (润滑). Some of this you do whenever you stretch. If you watch dogs and cats, you’ll get an idea of how natural it is. The general (9) is simple: whenever the body has been in one position for a while, it is good to (10) stretch it in an opposite position.A．allowingB．avoidableC．brieflyD．componentE．determinedF．helpingG．increasinglyH．lowestI．maintainJ．maximumK．preventL．principleM．provokeN．seriouslyO．topic （10）处应填（）
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