单选题I catch a cold now and then .

单选题{{B}}第三篇{{/B}} {{B}}Male and Female Pilots Cause Accidents Differently{{/B}} Male pilots flying general aviation (private) aircraft in the United States are more likely to crash due to inattention or flawed decision-making. While female pilots are more likely to crash from mishandling the aircraft. These are the results of a study by researchers at the Johns Hopkins University Bloomberg School of Public Health. The study identifies the differences between male and female pilots in terms of circumstances of the crash and the type of pilots error involved. "Crashes of general aviation aircraft account for 85 percent of all aviation deaths in the United States. The crash rate for male pilots, as for motor vehicle drivers, exceeds that of crashes of female pilots," explains Susan P. Baker, MPH, professor of health policy and management at the Bloomberg School of Public Health. "Because pilot youth and inexperience are established contributors to aviation crashes, we focused on only mature pilots, to determine the gender differences in the reasons for the crash." The researchers extracted data for this study from a large research project on pilot aging and flight safety. The data were gathered from general aviation crashes of airplanes and heIicopters between 1983 and 1997, involving 144 female pilots and 267 male pilots aged 40-63. Female pilots were matched with male pilots in a 1:2 ratio, by age, classes of medical and pilot certificates, state or area of crash, and year of crash. Then the circumstances of the crashes and the pilot error involved were categorized and coded without knowledge of pilot gender. The researchers found that loss of control on landing or takeoff was the most common circumstance for both sexes, leading to 59 percent of female pi.lots' crashes and 36 percent of males'. Experiencing mechanical failure, running out of fuel, and land!ng the plane with the landing gear up were among the factors more likely with males, while stalling was more likely with females. The majority of the crashes — 95 percent for females and 88 percent for males — involved at least one type of pilot error. Mishandling aircraft kinetics was the most common error for both sexes, but was more common among females (accounting for 81 percent of the crashes) than males (accounting for 48 percent). Males, however, appeared more likely to be guilty of poor decision-making, risk-taking, and inattentiveness, examples of which include misjudging weather and visibility or flying an aircraft with a known defect. Females, though more likely to mishandle or lose control of the aircraft, were generally more careful than their male counterparts. inattention n. 疏忽 aviation n. 航空 flawed adj. 有缺陷的 mishandle v. 瞎弄，乱处理 MPH (Master of Public Health) 公共卫生硕士 mnout v.耗尽，用完 stalll v. (飞机)失速, (发动机)熄火 kinetics n.动力学

单选题They {{U}}strolled{{/U}} around the lake for an hour or so.

单选题The policeman wrote down all the particulars of the accident.

单选题The news will horrify everyone.

单选题The train came to {{U}}an abrupt{{/U}} stop, making us wonder where we were. A. an uncertain B. a slow C. an unexpected D. a smooth

单选题The voluntary decision to label seems to have been Urewarded/U.

单选题Professor Taylor's talk has indicated that science has a very strong influence on the everyday life of non-scientists as well as scientists. A. motivation B. perspective C. impression D. impact

单选题They bought the land in order to build a new office block. A. with a purpose to B. with a view to C. with a goal to D. with a reason to

单选题We can only depend on ourselves instead of others.A. stemB. relyC. developD. deprive

单选题Most chemical reactions of an organic compound involve only a few of its numerous atoms; the remainder stay unchanged.A. majorityB. distributionC. restD. stability

单选题The Television Camera The television camera is rather like the human eye. Both the eye and the camera have a lens, and both produce a picture on a screen. In each case the picture is made up of millions of spots of light. Let us see how the eye works. When we look at an object-a person, a house, or whatever it may be, we do not see all the details of the object in one piece. We imagine that we do, but this is not the case. In fact, the eye builds up the picture for us in our brain, which controls our sight, in millions of separate parts, and although we do not realize it, all these details are seen separately. This is what happens when we look at something. Beams of light of different degrees of intensity, re-fleeted from all parts of the object, strike the lens of the eye. The lens then gathers together the spots of light from these beams and focuses them on to a light-sensitive plate-the retina-at the back of the eyeball. In this way, an image of the object is produced on the retina in the form of a pattern of lights. The retina contains millions of minute light-sensitive elements, each of which is separately connected to the brain by a tiny fiber in the optic nerve. These nerve fibers, working independently, pick out minute details from the image on the retina and torn the small spots of light into nerve impulses of different strengths. They then transmit these impulses to the brain. They do this all at the same time. All the details of the image are fed to the brain, and as we have taught our brain to add them together correctly, we see a clear picture of the object as a whole. Television, which means vision at a distance, operates on a similar principle. A television picture is built up in thousands of separate parts. Beams of light reflect from the subject being televised strike the lens of the television camera, which corresponds to the lens of the eye. The camera lens gathers together the spots of light from these beams and focuses an image of the subject on to a plate, the surface of which is coated with millions of photo-electric elements sensitive to light. The spots of light forming the image on the plate cannot be transmitted as light. So they are temporarily converted by an electronic device into millions of electrical impulses ; that is, into charges of electricity. These electrical impulses are then sent through space on a wireless wave to the homes of the viewers. They are picked up by the aerials and conveyed to the receivers to the television set. There, they are finally converted back into the spots of light that make up the picture on the television screen.

单选题I can"t put up with my neighbor"s noise any longer, it"s driving me mad.

单选题Many teachers don't like to use Uup-to-date/U textbooks in their classes.

单选题Where Did All the Ships Go? The Bermuda Triangle is one 1 the greatest mysteries of the sea. In this triangular area between Florida, Puerto Rico and Bermuda in Atlantic, ships and airplanes 2 to disappear more often than in 3 parts of the ocean. And they do so 4 leaving any sign of all accidents or any dead bodies. It is 5 that Christopher Columbus was the first person to record strange happenings in the area. His compass stopped working, a flame came down from the sky, and a wave 100 to 200 feet high carried his ship about a mile away. The most famous disappearance in the Bermuda Triangle was the US Naval Air Flight 19. 6 December 5, 1945, five bomber planes carrying 14 men 7 on a training mission from the Florida coast. Later that day, all communications with Flight 19 were lost. They just disappeared without a trace. The next morning, 242 planes and 19 ships took part in the largest air-sea search in history. But they found nothing. Some people blame the disappearances 8 supernatural forces. It is suggested that the 9 ships and planes were either transported to other times and places, kidnapped by aliens 10 attacked by sea creatures. There are 11 natural explanations, though. The US Navy says that the Bermuda Triangle is one of two places on earth 12 a magnetic compass points towards true north 13 magnetic north. 14 , planes and ships can lose their way if they don"t make adjustments. The area also has changing weather and is known 15 its high waves. Storms can turn up suddenly and destroy a plane or ship. Fast currents could then sweep away any trace of an accident.

单选题{{B}}第二篇{{/B}} {{B}}Will Quality Eat up the US Lead in Software?{{/B}} If US software companies don't pay more attention to quality, they could kiss their business good-bye. Both India and Brazil are developing a world-class software industry. Their weapon is quality and one of their jobs is to attract the top US quality specialists whose voices are not listened to in their country. AIready, of the world's 12 software houses that have earned the highest rating in the world, seven are in India. That's largely because they have used new methodologies rejected by American software specialists. For example, for decades, quality specialists, W. Edwards Deming and J. M.Juran had urged US software companies to change their attitudes to quality. But their quality call mainly fell on deaf ears in the US — but not in Japan. By the 1970s and 1980s, Japan was grabbing market share with better, cheaper products. They used Deming's and Juran's ideas to bring down the cost of good quality to as little as 5% of total production costs. In US factories, the cost of quality then was 10 times as high: 50%. In software, it still is. Watts S. Humphrey spent 27 years at IBM heading up software production and then quality assurance. But his advice was seldom paid attention to. He retired from IBM in 1986. In 1987, he worked out a system for assessing and improving software quality. It has proved its value time and again. For example, in 1990 the cost of quality at Raytheon Electronics Systems was almost 60% of total software production costs. It tell to 15% in 1996 and has since further dropped to below 10%. Like Deming and Juran, Humphrey seems to be winning more praises overseas than at home. The Indian government and several companies have just founded the Watts Humphrey Software Quality Institute at the Software Technology Park in Chennai, India. Let's hope that US lead in software will not be eaten up by its quality problems.

单选题 Microelectronics Revolution The 1980s are likely to be considered as a more than somewhat interesting decade for the United Kingdom and indeed for other industrialized countries. The political, social and economic autonomic reflexes in operation for the greater part of this century will have to give way to the new as conditions change. Paramount amongst these changes is the advent of microelectronics with their ability to increase productivity and the end of cheap, easily manipulated sources of energy. Together these will undoubtedly change the pattern of industrialization and industrialized life in a radical manner not seen in the UK since the early 19th century. Most technological changes are somewhat less than fundamental. Many act on an individual process of industry and so their effects on the general economy can be boxed off. Others act on the demand side with new products, often for new markets. Microelectronics, though, are different. It is difficult to think of parts of the economy on which they will not have an impact; it is especially very difficult to think of the many new consumer products that will evolve. It is already being used, in productive processes through robotics, in production planning through cheap computers, as cheap and easy to maintain components, and through telecommunications, teletext systems and word processing to provide, transmit and store information. The resulting large increases in productivity will mean that increased levels of output will be produced using fewer resources of manpower, raw materials and energy. On the face of it this has to be a good thing, it opens vistas that were previously closed. The cost, however, is measured in terms of the resulting job losses, job changes and lack of new jobs. If we sit back and allow the market to work allocating wealth and jobs, in other words continue as we are at present, either the technologies will not be introduced at all or there will be social confrontation on a massive scale. This new technology improves productivity at precisely the time world trade growth is declining, and this is likely to diminish even further given the responses to the shortage of energy sources. This will almost certainly mean that our ability to supply will outstrip (超过) our ability to demand, giving a classic high unemployment.

单选题The {{U}}huge{{/U}} Olympic Park will be built outside the city.

单选题I don't quite {{U}}follow{{/U}} what she is saying. A. believe B. understand C. explain D. accept

单选题阅读下面这篇短文，短文后列出7个句子，请根据短文的内容对每个句子做出判断。 {{B}}Television Is Doing Irrearable Harm{{/B}} “Yes, but what did we use to do before there was television?” How often we hear statements like this! Television hasn’t been with us all that long, but we are already beginning to forget what the world was like without it, Before we admitted the one-eyed monster into our homes we never found it difficult to occupy our spare time. We used to enjoy civilized pleasures. For instance, we used to have hobbies, we used to entertain our friends and be entertained by them, we used to go outside for our amusements to theatres, cinemas, restaurants and sporting events, We even used to read books and listen to music and broadcast talks occasionally. All that belongs to the past. Now all our free time is regulated by the “goggle box”. We rush home or gulp down our meals to be in time for this or that programme. We have even given up sitting at table and having a leisurely evening meal, exchanging the news of the day. A sandwich and a glass of beer will do anything, providing it doesn’t interfere with the programme. The monster demands absolute silence and attention. If any member of the family dares to open his mouth during a programme, he is quickly silenced. Whole generation are growing up addicted to the telly. Food is left uneaten, homework undone and sleep is lost, The telly is a universal pacifier. It is now standard practice for mother to keep the children quiet by putting them in the living room and turning on the set. It doesn’t mater that the children will watch rubbishy commercials or spectacles of sadism(性虐狂)and violence—so long as they are quiet. There is a limit to the amount of creative talent available in the world, Every day, television consumes vast quantities of creative work, That is why most of the programmes are so bad : it is impossible to keep pace with the demand maintain high standards as well. When millions watch the same programme, the whole world becomes a village, and society is reduced to the conditions which obtain in pre-literate communities (有文字之前的时期). We become utterly dependent on the two most primitive media of communication: pictures and the spoken work. Television encourages passive enjoyment. We become content with second-hand experiences. It is so easy to sit in our armchair watching others working. Little by little “television” cuts us off from the real world. We get so lazy, we choose to spend a fine day in semi-darkness, glued to our sets, rather than go out into the world itself, Television may be a splendid medium of communication, but it prevents us from communicating with each other. We only become aware how totally irrelevant television is to real living when we spend a holiday by the sea or in the mountains, far away from civilization, In quiet natural surroundings we quickly discover how little we miss the hypnotic (催眠)tyranny of King Telly.