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单选题
According to Dr. Small, _____.
A
left-handers may start brain aging later than right-handers do
B
learning a foreign language does not help to keep our brain from getting old
C
doing crossword puzzles is a good way to keep us from memory loss
D
mental exercises plus healthy diet alone cannot keep us from brain aging
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参考解析
解析：
在最后一段Small博士还建议要多进行体育锻炼，多吃些低脂肪但富含omega-3脂肪酸的食品，比如鱼类、核桃、巴西坚果以及含抗氧化剂较高的蔬菜和水果如蓝莓和洋葱等，此外还要减少压力。
在最后一段Small博士还建议要多进行体育锻炼，多吃些低脂肪但富含omega-3脂肪酸的食品，比如鱼类、核桃、巴西坚果以及含抗氧化剂较高的蔬菜和水果如蓝莓和洋葱等，此外还要减少压力。
更多 “单选题According to Dr. Small, _____.A left-handers may start brain aging later than right-handers doB learning a foreign language does not help to keep our brain from getting oldC doing crossword puzzles is a good way to keep us from memory lossD mental exercises plus healthy diet alone cannot keep us from brain aging” 相关考题
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根据下面资料，回答
"Hi there. How′ s it going?"
"Oh, fine. Fine. How about this weather, huh?"
"Well, I guess we can always use the rain."
What is that? This story? Oh, just a little look at small talk. You know, those seemingly meaningless conversations you have dozens of times a day. Maybe you′re waiting for the elevator, or in a line at the bank. It all seems pretty trivial. Idle chatter about traffic doesn′t do much more than fill the air with empty words that are quickly forgotten. But you should know that small talk actually has a big place in our lives.
Pat Oliver, assistant professor on arts, says that, "Left unchecked, small talk can be an invasion. It′ s so powerful. It does something to you." "Every morning after spending an hour and a half on the freeway I start the day with small talk with my secretary," Oliver says, "If I don′t make small connection with another person, I can′ t work."
What causes it? As a rule, you′re either trying to force something into your life, or you′re using conversation as an invisible force field to keep them out. You can be wanting to connect with another person, and small talk is your introduction to more meaning conversation. The way people use small talk is usually determined by where they happen to beat the time.
Take the elevator, for instance. Now there′ s prime territory. Nobody knows anyone and there′ s no reason to start a conversation, but invariably, someone does. "Making conversation in such peaceful social settings," according to Oliver, "can confirm your territory. It′s a way of feeling liked and accepted."
The topics of small talk don′t matter. In fact, you don′t want anything more taxing than the weather or the traffic. It′ s non-threatening talk in a threatening situation. However, the rules change quickly when you′re with lots of people doing lots of talking.
Let′ s say you′ re at a party. Now it′ s time to use small talk as a way of making others feel more comfortable around you, so don′ t look silly standing by the food table alone all night.
According to the author, small talk is often used _____________.A.to invade other' s private affairs
B.to share a secret between intimate friends
C.to open and maintain channels of communication
D.to protect one' s own privacy
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B.iPad mini
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单选题Passage1Lonely people, it seems, are at greater risk than the gregarious of developing illnesses associated with chronic inflammation, such as heart disease and certain cancers.A paper published last year in the Public Library of Science, Medicine, shows the effect on mortality of loneliness is comparable with that of smoking and drinking after examining the results of 148 previous studies and controlled for factors such as age and pre-existing illness.Steven Cole of the University of Califormia, Los Angeles, thinks he may know why this is so.He told the American Association for the Advancement of Science meeting in Washington,D.C., about his work studying the expression of genes in lonely people. Dr. Cole harvested samples of white blood cells from both lonely and gregarious people. He then analysed the activity of their genes, as measured by the production of a substance called messenger RNA. This molecule carries instructions from the genes telling a cell which proteins to make. The level of messenger RNA from most genes was the same in both types of people. There were several dozen genes, however, that were less active in the lonely, and several dozen others that were more active. Moreover, both the less active and the more active gene types came from a small number of functional groups.Broadly speaking, the genes less active in the lonely were those involved in staving off viral infections. Those that were more active were involved in protecting against bacteria. Dr. Cole suspects this could help explain not only why the lonely are iller, but how, in evolutionary terms, this odd state of affairs has come about.The crucial bit of the puzzle is that viruses have to be caught from another infected individual and they are usually species-specific. Bacteria, in contrast, often just lurk in the environment, and may thrive on many hosts. The gregarious are therefore at greater risk than the lonely of catching viruses, and Dr. Cole thus suggests that past evolution has created a mechanism which causes white cells to respond appropriately. Conversely, the lonely are better off ramping up their protection against bacterial infection, which is a bigger relative risk to them.What Dr. Cole seems to have revealed, then, is a mechanism by which social environment reaches inside a person's body and tweaks its genome so that it responds appropriately. It is not that the lonely and the gregarious are genetically different from each other. Rather, their genes are regulated differently, according to how sociable an individual is. Dr. Cole thinks this regulation is part of a wider mechanism that tunes individuals to the circumstances they find themselves in.Broadly speaking, the genes more active in the lonely______.A
helped to avoid infections resulting from virusesB
participated in guarding against bacteriaC
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existed only as a small group
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McDonald’s was founded in 1948.B
McDonald’s has opened its restaurants in every city of the world.C
McDonald’s has over 30,000 locations in the world now.D
McDonald’s was very small in scale in the beginning.
考题
单选题Passage1Lonely people, it seems, are at greater risk than the gregarious of developing illnesses associated with chronic inflammation, such as heart disease and certain cancers.A paper published last year in the Public Library of Science, Medicine, shows the effect on mortality of loneliness is comparable with that of smoking and drinking after examining the results of 148 previous studies and controlled for factors such as age and pre-existing illness.Steven Cole of the University of Califormia, Los Angeles, thinks he may know why this is so.He told the American Association for the Advancement of Science meeting in Washington,D.C., about his work studying the expression of genes in lonely people. Dr. Cole harvested samples of white blood cells from both lonely and gregarious people. He then analysed the activity of their genes, as measured by the production of a substance called messenger RNA. This molecule carries instructions from the genes telling a cell which proteins to make. The level of messenger RNA from most genes was the same in both types of people. There were several dozen genes, however, that were less active in the lonely, and several dozen others that were more active. Moreover, both the less active and the more active gene types came from a small number of functional groups.Broadly speaking, the genes less active in the lonely were those involved in staving off viral infections. Those that were more active were involved in protecting against bacteria. Dr. Cole suspects this could help explain not only why the lonely are iller, but how, in evolutionary terms, this odd state of affairs has come about.The crucial bit of the puzzle is that viruses have to be caught from another infected individual and they are usually species-specific. Bacteria, in contrast, often just lurk in the environment, and may thrive on many hosts. The gregarious are therefore at greater risk than the lonely of catching viruses, and Dr. Cole thus suggests that past evolution has created a mechanism which causes white cells to respond appropriately. Conversely, the lonely are better off ramping up their protection against bacterial infection, which is a bigger relative risk to them.What Dr. Cole seems to have revealed, then, is a mechanism by which social environment reaches inside a person's body and tweaks its genome so that it responds appropriately. It is not that the lonely and the gregarious are genetically different from each other. Rather, their genes are regulated differently, according to how sociable an individual is. Dr. Cole thinks this regulation is part of a wider mechanism that tunes individuals to the circumstances they find themselves in.What risk may lonely people run according to the first paragraph?A
They can have the same risk as the gregarious.B
They may have symbols of early aging.C
They may fall victim to chronic illnesses.D
They may undergo more severe illnesses.
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