单选题Poverty exists because our society is an unequal one ,and there are extremely strong and powerful political pressures to keep it that way. Any attempt to redistribute wealth and income in the United States will inevitably be opposed by powerful middle and upper class interests. People can be relatively rich only if others are relatively poor, and since power is concentrated in the hands of the rich, public policies will continue to reflect their interests rather than those of the poor. As Herbert Gans (1973) has pointed out, poverty is actually functional from the point of view of the non-poor. Poverty ensures that" dirty" work gets done. If there were, no poor people to scrub floors and empty waste, these jobs would have to be rewarded with high incomes before anyone would touch them. Poverty creates jobs for many of the non-poor, such as police officers, welfare workers, pawnbrokers, and government bureaucrats. Poverty makes life easier for the rich by providing them with cooks, gardeners, and other workers to perform basic chores while their employers enjoy more, pleasurable activities. Poverty provides a market for inferior goods and services, such as day-old bread, run-down automobiles, or the advice of incompetent physicians and lawyers. Poverty makes middle-class values seem acceptable. To the middle class, the fate of the poor — who are supposed to lack the virtues of thrift, honesty, and a taste for hard work — only confirms the desirability of qualities the poor are thought to lack. Poverty also provides a group that can be made to absorb the costs of change. For example, the poor suffer the main part or force of unemployment caused by automaton, and it is their homes, not those of the wealthy, that are demolished when a route has to be found for a new highway. There is no intentional, conscious "secret plan" of the wealthy to keep the poor in poverty. It is just that poverty is an inevitable outcome of the American economic system; which the poor are politically powerless to influence change.

单选题______ entering the house, he immediately found something strange. [A] At [B] In [C] On [D] For

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单选题By the time you retire, there"s no doubt about it, your brain isn"t what it used to be. By 65, most people will start to notice the signs: you forget people"s names and the teapot occasionally turns up in the fridge. There is a good reason why our memories start to let us down. At this stage of life, we are steadily losing brain cells in critical areas. This is not too much of a problem at first; even in old age, the brain is flexible enough to compensate. At some point, though, the losses start to make themselves felt. Clearly, not everyone ages in the same way, so what"s the difference between a happy, intelligent old person and a forgetful, bad-tempered granny? And can we improve our chances of becoming the former? Exercise can certainly help. Numerous studies have shown that gentle exercise three times a week can improve concentration and abstract reasoning in older people, perhaps by encouraging the growth of new brain cells. Exercise also helps steady our blood sugar. As we age, our blood sugar control worsens, which causes a large increase in blood sugar levels. This can affect an area that helps form memories. Since physical activity helps control blood sugar, getting out and about could reduce these peaks and, potentially, improve your memory. Coordination training could also help. Studies have shown that specifically targeting motor control and balance improves learning function in 60 to 80-year-olds. "Brain training" was once considered strange, but a study concludes that computerised brain exercises can improve memory and attention in the over 65s. Importantly, these changes were large enough that participants reported significant improvements in everyday activities, such as remembering names or following conversations in noisy restaurants. Avoiding the complaints is even easier. In fact, your brain is doing all it can to ensure a contented retirement. By 65, we are much better at increasing the experience of positive emotion, says Florin Dolcos, a neurobiologist at the University of Alberta in Canada. In experiments, he found that people over the age of 60 tended to remember fewer emotionally negative photographs compared with positive ones than younger people.

单选题Whydoesthewomanneedtosolvetheproblem?

单选题WhatisSallydoingnow?A.TypinglettersforMr.Black.B.TypingareportforMrs.Farnsworth.C.TypingareportforMr.Black.D.TypinglettersforMrs.Farnsworth.

单选题What' s the author' s impression of Alaska?

单选题It is not an easy job to carry out a general plan for birth control throughout the world because ______.

单选题Today's policeman in large cities throughout the world (26) on modem inventions to help them in their work. In most places motor scooters and police patrol cars have (27) away with the need to patrol a beat on foot or on horseback. Policemen use telephones, (28) located throughout their districts, to make immediate (29) with headquarters. Radio, television, and computers (30) to speed the work of the modem force. Even boats and helicopters are part of the equipment of metropolitan police departments. New technical inventions are widely used to (31) crime and speed the (32) of criminal cases. Electronic computers reduce from hours to minutes the time spent in (33) for fingerprints. Witnesses' (34) of a criminal are coded and fed (35) a computer. The machine then sorts through the picture file of known criminals and selects the name and photograph of the most (36) suspect. Lie detectors, (37) such evidence is acceptable, are used to (38) the truth. A criminal identification tool in (39) in some places is the image reflector, or "imagemaker". This machine (40) a picture of a face (41) a screen. A detective manipulates the machine to (42) the parts of the face to match those of the suspect (43) described by the witnesses. The final picture is then photographed and sent to police in other areas. Sometimes skilled sketch artists employed by police departments (44) oral descriptions into (45) of a suspect.

单选题A pop singer must work hard when he has become famous to ______.

单选题What will happen if you use language in an improper way?

单选题How many different kinds of emotions do you feel? You may be (26) to find that it is very hard to state all of them in detail. Not only are emotional feelings hard to (27) in words, they are difficult to (28) . As a result, two people (29) agree on all of them. However, there are a number of (30) emotions that most people experience. When we receive something that we want, or something happens (31) we like, we usually feel joy or happiness. Joy is a (32) and powerful emotion which we all try to get. It is natural that all of us search (33) happiness. As a (34) , joy occurs when we reach a (35) goal or obtain a desired object. (36) people often desire different goals and object, it is (37) that one person may find joy in repairing an automobile, (38) another may find joy in solving a math problem. Of course, we often share (39) goals or interests, and therefore we can experience joy together. When we have difficulty (40) desired objects or reaching desired goals we experience (41) emotions such as anger and grief. When little things get in our way, we experience (42) frustrations or tensions. For example, if you are dressing to go out (43) a date, you may feel (44) when a zipper breaks or a button falls off. If you really want something to happen, and you feel it should happen, but someone or something (45) it, you may become quite angry.

单选题Whydoesn'tPeterdriveacartowork?

单选题What can we learn from the conversation?

单选题 {{I}}Questions 23 to 25 are based on the passage you have just heard.{{/I}}