单选题Malaria is all infectious parasitic disease that can be either acute or chronic and is frequent______. A. repeating B. terminal C. debilitating D. recurrent

单选题Having published more than a dozen papers in some first-rate journals, she is held in high ______ by her colleagues.

单选题Henry went through the documents again carefully for fear of______any important data.(中国矿业大学2008年试题)

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单选题She ought not ______ him about the truth, but she did. A. to tell B. telling C. to have told D. having told

单选题Sign has become a scientific hot button. Only in the past 20 years have specialists in language study realized that signed languages are unique—a speech of the hand. They offer a new way to probe how the brain generates and understands language, and throw new light on an old scientific controversy; whether language, complete with grammar, is something that we are born with, or whether it is a learned behavior. The current interest in sign language has roots in the pioneering work of one rebel teacher at Gallaudet University in Washington, D.C., the world"s only liberal arts university for deaf people. When Bill Stokoe went to Gallaudet to teach English, the school enrolled him in a course in signing. But Stokoe noticed something odd: among themselves, students signed differently from his classroom teacher. Stokoe had been taught a sort of gesture code, each movement of the hands representing a word in English. At the time, American Sign Language (ASL) was thought to be on more than a form of pidgin English (混杂英语). But Stokoe believed the "hand talk" his students used looked richer. He wondered: might deaf people actually have a genuine language? And could that language be unlike any other on Earth? It was 1955, when even deaf people dismissed their signing as "substandard". Stokoe"s idea was academic heresy ( 异端邪说). It is 37 years later. Stokoe—now devoting his time to writing and editing books and journals and to producing video materials on ASL and the deaf culture—is having lunch at a cafe near the Gallaudet campus and explaining how he started a revolution. For decades educators fought his idea that signed languages are natural languages like English, French and Japanese. They assumed language must be based on speech, the modulation (调节) of sound. But sign language is based on the movement of hands, the modulation of space. "What I said," Stokoe explains, "is that language is not mouth stuff—it"s brain stuff."

单选题 Opinion polls are now beginning to show an unwilling general agreement that, whoever is to blame and whatever happens from now on, high unemployment is probably here to stay. This means we shall have to find ways of sharing the available employment widely. But we need to go further. We must ask some fundamental questions about the future work. Should we continue to treat employment as the norm? Should we not rather encourage many other ways for self respecting? Should we not create conditions in which many of us can work for ourselves, rather than for an employer? Should we not aim to revive the household and the neighborhood, as well as the factory and the office as centers of production and work? The industrial age has been the only period of human history in which most people's work has taken the form of jobs. The industrial age may now be coming to an end, and some of the changes in work patterns which it brought may have to be reversed. This seems a discouraging thought. But, in fact, it could offer the prospect of a better future for work. Universal employment, as its history shows has not meant economic freedom. Employment became widespread when the 17th and 18th centuries made many people dependent on paid work by depriving them of the use of the land, and thus of the means to provide a living for themselves. Then the factory system destroyed the cottage industries and removed work from people's homes. Later, as transport improved, first by rail and then by road, people traveled longer distances to their places of employment until, eventually, many people's work lost all connection with their home lives and the places in which they lived. Meanwhile, employment put women at disadvantage. It became customary for the husband to go out to paid employment, leaving the unpaid work of the home and family to his wife. All this may now have to change. The time has certainly come to switch some effort and resources away from the impractical goal of creating jobs for all, to the urgent practical task of helping many people to manage without full-time jobs.

单选题Which of the following most accurately describes the pattern of the passage?

单选题This brings a feeling of emptiness that can never be filled and leaves us with a ______ for more. A. scarcity B. command C. hunger D. request

单选题2 As one works with color in a practical or experimental way, one is impressed by two apparently unrelated facts. Color as seen is a mobile changeable thing depending to a large extent on the relationship of the color to other colors seen simultaneously. It is not fixed in its relation to the direct stimulus which creates it. On the other hand, the properties of surfaces that give rise to color do not seem to change greatly under a wide variety of illumi nation colors, usually (but not always) looking much the same in artificial light as in day light. Both of these effects seem to be due in iarge part to the mechanism of color adapta tion mentioned earlier. When the eye is fixed on a colored area, there is an immediate readjustment of the sensitivity of the eye to color in and around the area viewed. This readjustment does not im mediately affect the color seen but usually does affect the next area to which the gaze is shifted. The longer the time of viewing, the higher the intensity, and the larger the area, the greater the effect will be in terms of its persistence in the succeeding viewing situa tion. As indicated by the work of Wright and Shouted, it appears that, at least for a first approximation, full adaptation takes place over a very brief time if the adapting source is moderately bright and the eye has been in relative darkness just previously. As the stimulus is allowed to act, however, the effect becomes more persistent in the sense that it takes the eye longer to regain its sensitivity to lower intensities. The net result is that, if the eye is so exposed and then the gaze is transferred to an area of lower intensity, the loss of sen sitivity produced by the first area will still be present and appear as an "afterimage" super imposed on the second. The effect not only is present over the actual area causing the "lo cal adaptation" but also spreads with decreasing strength to adjoining areas of the eye to produce "lateral adaptation. " Also, because of the persistence of the effect if the eye is shifted around from one object to another, all of which are at similar brightness or have similar colors, the adaptation will tend to become uniform over the whole eye.

单选题On April 20, 2000, in Accra, Ghana, the leaders of six West African countries declared their intention to proceed to monetary union among the non-CFA franc countries of the region by January 2003, as a first step toward a wider monetary union including all the ECOWAS countries in 2004. The six countries (71) themselves to reducing central bank financing of budget deficits (72) 10 percent of the previous year's government (73) ; reducing budget deficits to 4 percent of the second phase by 2003; creating a Convergence Council to help (74) macroeconomic policies; and (75) up a common central bank. Their declaration (76) that, "Member States (77) the need (78) strong political commitment and (79) to (80) all such national policies (81) would facilitate the regional monetary integration process. The goal of a monetary union in ECOWAS has long been an objective of the organization, going back to its formation in 1975, and is intended to (82) a broader integration process that would include enhanced regional trade and (83) institutions. In the colonial period, currency boards linked sets of countries in the region. (84) independence, (85) , these currency boards were (86) , with the (87) of the CFA franc zone, which included the francophone countries of the region. Although there have been attempts to advance file agenda of ECOWAS monetary cooperation, political problems and other economic priorities in several of the region's countries have to (88) inhibited progress. Although some problems remain, the recent initiative has been bolstered by the election in 1999 of a democratic government and a leader who is committed to regional (89) in Nigeria, the largest economy of the region, raising hopes that the long-delayed project can be (91) .

单选题Most people who travel long distances complain of jetlag (飞行时差反应). Jetlag makes business travelers less productive and more prone 1 making mistakes. It is actually caused by 2 of your "body clock"—a small cluster of brain cells that controls the timing of biological 3 . The body clock is designed for a 4 rhythm of daylight and darkness, so that it is thrown out of balance when it 5 daylight and darkness at the wrong times in a new time zone. The 6 of jetlag often persist for days 7 the internal body clock slowly adjusts to the new time zone. Now a new anti-jetlag system is 8 that is based on proven 9 pioneering scientific research. Dr. Martin Moore-Ede has 10 a practical strategy to adjust the body clock much sooner to the new time zone 11 controlled exposure to bright light. The time zone shift is easy to accomplish and eliminates 12 of the discomfort of jetlag. A successful time zone shift depends on knowing the exact time to either 13 or avoid bright light. Exposure to light at the wrong time can actually make jetlag worse. The proper schedule 14 light exposure depends a great deal on 15 travel plans. Data on a specific flight itinerary (旅行路线) and the individual"s sleep 16 are used to produce a Trip Guide with 17 on exactly when to be exposed to bright light. When the Trip Guide calls 18 bright light, you should spend time outdoors if possible. If it is dark outside, or the weather is bad, 19 you are on an aeroplane, you can use a special light device to provide the necessary light 20 for a range of activities such as reading, watching TV or working.

单选题The foreign minister would reveal nothing about his recent tour of the Middle East beyond what had already been announced at the press conference.

单选题The appearance of this used cat is quite______, and it is much newer than it really is.

单选题The 1982 oil and Gas Act gives power to permit the disposal of assets held by the Corporation, and ______ the Corporation's statutory monopoly in the supply of gas for fuel purposes so as to permit private companies to compete in this supply. A. defers B. curtails C. triggers D. sparks

单选题The statement Sperm bank catalogues can give the impression that babies are as guaranteed as dishwashers implies that _____________.

单选题You may have wondered why the supermarkets are all the same. It is not because the companies that operate them lack imagination. It is because they all aim at persuading people to buy things. In the supermarket, it takes a while for the mind to get into a shopping mode. This is why the area immediately inside the entrance is known as the "decompression zone". People need to slow down and look around, even if they are regulars. In sales terms this area is bit of a loss, so it tends to be used more for promotion. Immediately inside the first thing shoppers may come to is the fresh fruit and vegetables section. For shoppers, this makes no sense. Fruit and vegetables can be easily damaged, so they should be bought at the end, not the beginning, of a shopping trip. But what is at work here? It turns out that selecting good fresh food is a way to start shopping, and it makes people feel less guilty about reaching for the unhealthy stuff later on. Shoppers already know that everyday items, like milk, are invariably placed towards the back of a store to provide more opportunities to tempt customers. But supermarkets know shoppers know this, so they use other tricks, like placing popular items halfway along a section so that people have to walk all along the aisle looking for them. The idea is to boost "dwell time" : the length of time people spend in a store. Traditionally retailers measure "football" , as the number of people entering a store is known, but those numbers say nothing about where people go and how long they spend there. But nowadays, a piece of technology can fill the gap: the mobile phone. Path Intelligence, a British company tracked people's phones at Gunwharf Quays, a large retailer centre in Portsmouth — not by monitoring calls, but by plotting the positions of handsets as they transmit automatically to cellular networks. It found that when dwell time rose 1% sales rose 1. 3%. Such techniques are increasingly popular because of a deepening understanding about how shoppers make choices. People tell market researchers that they make rational decisions about what to buy, considering tilings like price, selection or convenience. But subconscious forces, involving emotion and memories, are clearly also at work.

单选题He is______to all requests tor help.

单选题The two witnesses who saw the shootings were able to ______ who hard fired first.

单选题I have a vegetable garden and every summer I enjoy eating my own vegetables. One day last summer I picked a dozen carrots. Usually, as soon as I have picked the carrots, I clean the dirt off them by washing them in a bucket of water. But this day, as I was getting up from the ground with my twelve carrots, I tripped(绊)and fell over the bucket. The water spilled out of the bucket, so I decided to wash the carrots quickly in the kitchen sink. I put the carrots in the sink, washed them with water, and watched all the dirt washed away down the drain. The next day, when I was washing dishes, I noticed that the water drained out of the sink much more slowly than usual. It drained so slowly that I called a plumber(水管工)to come and fix my drain. The plumber tried a lot of different cleaners and equipment, but nothing worked. He had to cut a hole in the floor where the drain pipe was in order to try to find the problem. While he was cutting the small hole, he accidentally cut the hot-water pipe. Hot water sprayed over the plumber, onto the floor, under the refrigerator; water went everywhere. My refrigerator stopped working because the water had affected the electrical wires. I called an electrician to come and fix the refrigerator. The electrician had to move the refrigerator to work on the wires. As she was balancing it, she tripped over the plumber's tools. She fell down and the refrigerator tipped over. It crashed into the wall, resulting in a huge hole in the wall. I called a carpenter to come and fix the wall. In order to repair the hole in the wall, the carpenter had to tear down half of the entire wall. Meanwhile, the plumber was still looking for the source of the drain problem. Since the kitchen was in a terrible mess anyway, the plumber decided to remove part of the floor to look at the pipe there. In the middle of the floor, he found the problem: the dirt from the carrots was stuck in the pipe and nothing could go through. Now I had a sink that did not drain, a refrigerator that did not work, a wall that was half gone, and part of a floor that was missing. I looked at this disaster and decided that what I really needed was a new kitchen. Finally, I called a house builder to come and fix my kitchen. Three weeks later I had a new sink, a new refrigerator, new cupboards on a new wall, new tiles on a new floor, and $ 10, 000 less in my bank.