What reason do Americans give for the reduction in traffic accidents?
A．Their imposition of speed limit.
B．Their introduction of driving tests.
C．Their guide to inexperienced drivers.
D．The rise in their traffic density.

未分类题【C9】A．anotherB．otherC．the otherD．one

未分类题The phrase 'capitalize on' (Line 3, Para. 5) most probably means______.A．supply funds toB．give birth toC．take advantage ofD．put up with

未分类题It may be necessary, in order that future【C1】______can enjoy clean air, that more of the【C2】______is borne by long-term central government fund As air pollution varies enormously from place to place and can, indeed, be very local, it may also be necessary for the central government to【C3】______money so that local authorities can【C4】______special local problems. That these can be significant was shown by the report made in 1970【C5】______behalf of the London Boroughs Association. This【C6】______that in central London since 1958 smoke concentrations have decreased by 80 percent, whereas sunshine has increased by 70 percent and winter visibility has【C7】______threefold. There have been【C8】______in mortality and hospital admissions【C9】______with air pollution and in the response to it of bronchitis, as well as clear if less documented increases in plant types and bird【C10】______in the cities.【C1】A．habitatsB．inhabitantsC．inhabitantD．inhabit

未分类题【C7】A．makingB．madeC．to makeD．make

未分类题【C2】 if

未分类题'Culture shock' occurs as a result of total immersion in new culture. It【C1】______to 'people who have been suddenly transplanted abroad. ' Newcomers may be anxious【C2】______they do not speak the language, know the【C3】______, or understand peoples behavior. in daily life. The visitor finds that 'yes' may not always mean 'yes', that friendliness does not【C4】______mean friendship or that statements that appear to be serious are really intended【C5】______jokes. The foreigner may be unsure as to when to shake hands or embrace, when to【C6】______conversations, or how to approach a stranger. The【C7】______of 'culture shock' helps explain feelings of bewilderment and disorientation. Language problems do not account for all the frustrations that people feel. When one is【C8】______of everything that was once familiar, such as understanding a transportation system, knowing how to register for university classes, 【C9】______knowing how to make friends, difficulties in coping with the new society may【C10】______.【C1】A．occursB．appearsC．happensD．exists

未分类题【C2】A．so thatB．becauseC．unlessD．though

未分类题American consumers like convenience very much. During the last 50 years, there has been a dramatic increase in such labor-saving devices as automatic washing machines, clothes dryers, dishwashers, food processors, microwave ovens, garbage disposals and power lawn mowers. Today, all of these and many more, are found in a typical suburban home. These labor-saving devices are designed to reduce the time spent on housework. However, the time that Americans save is quickly spent on other activities. The American desire for convenience also created the concept of fast-food restaurants, found in every city and almost every small town in the United States, and now exported all over the world. These fast-food restaurants, such as McDonalds and KFC, serve sandwiches, salads, fried chicken, seafood, and other food to hurried customers in five minutes or less, often at a drive-up window. There are also a wide variety of restaurants that will deliver Chinese food, pizza, and other dishes to peoples homes in about a half-hour. In many areas there are 'take-out taxis' that will deliver food from the menus of 20 or 30 different restaurants for a small charge. For those who prefer to prepare their food at home, American grocery stores are full of convenience foods that are packaged and ready to cook or even precooked. Like microwave ovens and dishwashers, fast-food and take-out restaurants are convenient because they save the American consumer time that would otherwise be spent fixing meals or cleaning up. More than half of all the women in the United States are currently employed. This includes mothers with children under the age of 18. More than half the women with little children under the age of six hold jobs. Sixty-eight percent of the women who have school-age children are employed. Families with working mothers need all the time-savers they can get. Thus, the conveniences that Americans desire reflect not so much a leisurely lifestyle. as a busy lifestyle. in which even minutes of time are too valuable to be wasted. Alexis de Tocqueville was one of the first to see in this a curious paradox (自相矛盾) in the American character. He observed that Americans were so busy working to acquire comforts and conveniences that they were unable to relax and to enjoy leisure time when they had it. Today, many Americans have what one medical doctor has called 'the hurry sickness'.The increase in labor-saving devices in the last 50 years reflected______.A．a shortage of labor force in AmericaB．people's need to reduce the time spent on houseworkC．Americans' interest in doing houseworkD．the quick change of American family life

单项选择题Until last spring, Nia Parker and the other kids in her neighborhood commuted to school on Bus 59. But as fuel prices rose, the school district needed to find a way to cut its transportation costs. So the schools busing company redrew its route map, eliminating Nias bus altogether. Now Nia and her neighbors travel the half mile to school via a 'walking school bus' —a group of kids, supervised by an adult or two, who make the walk together. Like the rest of us, school districts are feeling pinched by rising fuel costs—and finding new way to adapt. The price of diesel fuel has gone up 34 percent in the past two years. For the typical American school district, bus bills total 5 percent of the budget. As administrators look to trim, busing is an inviting target, since it doesnt affect classroom instruction (or test scores). More than one third of American school administrators have eliminated bus stops or routes in order to stay within budget. Many parents are delighted to see their kids walking to school, partly because many did so themselves: according to a 1969 survey, nearly half of school kids walked or biked to school, compared with only 16 percent in 2001. Modern parents have been unwilling to let kids walk to school for fear of traffic, crime or simple bullying, but with organized adult supervision, those concerns have diminished. Schools and busing companies are finding other ways to save. In rural areas where busing is a must, some schools have even chosen four-day school weeks. Busing companies instruct drivers to eliminate extra stops from routes and to turn off the engine while idling. They are also using computer software to determine the most fuel-efficient routes, which arent always the shortest ones. There could be downsides, however, to the busing cutbacks. If every formerly bused student begins walking to school, its an environmental win—but if too many of their parents decide to drive them instead, the overall carbon footprint can grow. Replacing buses with many more parent-driven cars can also increase safety risks. A 2002 report concluded students are 13 times safer on a school bus than in a passenger car, since buses have fewer accidents and withstand them better due to their size. And some students complain about the long morning hikes, particularly when the route contains a really big hill.The 'walking school bus' ______.A．does not consume fuelB．aims to keep children fitC．seldom causes traffic jamsD．is popular with school kids

未分类题The amount of sleep a human being needs depends on【C1】______ , the individual and possibly race. For example, doctors think that pre-school children need between 10 and 12 hours a night; school children between 9 and 11 hours; and adults between 7 and 9 hours. There are exceptional【C2】______ of old people who only sleep between 2 and 3 hours a day and continue to be active and healthy. The sleep requirements of different【C3】______ also appear to be different. Japanese people, for example, sleep fewer hours than Europeans. It is not known for【C4】______ if mental activity(apart from dreaming)occurs when a person is asleep.【C5】______ , it is certainly true that some people can wake up at a specific, predetermined time. There are also【C6】______ about mathematicians who solve difficult problems during sleep, because their【C7】______ minds continue working on the problem. Some types of unpleasant dreams(or 'nightmares')are quite【C8】______ ; the dreamer is taking a test, but is not properly prepared; he is falling from a tree;【C9】______ an animal or thing is chasing him. Some people say these last two occur【C10】______ mans ancestors lived in trees and were in constant danger from wild animals.【C1】A．genderB．occupationC．ageD．personality

未分类题【C7】 on

未分类题Our whole physical universe, when______to the simplest terms, is made up of two things, energy and matter.A．being reducedB．reducingC．reducedD．to be reduced

未分类题Water expands ______ freezing, as can be deduced from occasional breaks in water pipes in severe winters.A．onB．duringC．withD．against

未分类题A unique laboratory at the University of Chicago is busy only at night. It is a dream【C1】______where researchers are at work studying dreamers. Their findings have revealed that everyone dreams from three to seven times a night,【C2】______ in ordinary life a person may remember none or only one of his dreams. While the【C3】______ sleep, special machines record their brain waves and eye movements as well as the body movements that【C4】______ the end of a dream. Surprisingly, all subjects【C5】______ soundly. Observers report that a person usually fidgets before a dream. Once the dream has started, his body relaxed and his eyes【C6】______ more active, as if the curtain had gone on a show. As soon as the machine【C7】______ that the dream is over, a buzzer wakens the sleeper. He sits up, records his dream, and goes back to sleep—perhaps to【C8】______ some more. Researchers have found that if the dreamer is【C9】______ immediately after his dream, he can usually recall the entire dream. If he is allowed to sleep even five more minutes his【C10】______ of the dream will have faded.【C1】A．millB．laboratoryC．hospitalD．classroom

未分类题Not everyone has this two-legged instrument, but everyone, with a little attention, may observe signs of that kind of fault-finding disposition and make the same resolution to avoid those______.A．infected with itB．infecting with itC．infected with themD．infecting with them