单选题Learning Disorder—Dyslexia As many as 20% of all children in the United States suffer from some form of the learning disorder called dyslexia. Experts on dyslexia say that the problem is not a disease. They say that persons with dyslexia use information in a different way. One of the world"s great thinkers and scientists Albert Einstein was dyslexic. Einstein said that he never thought in words the way that most people do. He said that he thought in pictures instead. The American inventor Thomas Edison was also dyslexic. Dyslexia first was recognized in Europe and the United States more than 80 years ago. Many years passed before doctors discovered that persons with the disorder were not mentally slow or disabled. The doctors found that the brains of persons with dyslexia are different. In most people, the left side of the brain—the part that controls language—is larger than the right side. In persons with dyslexia, the right side of the brain is bigger. Doctors are not sure what causes this difference. However, research has shown that dyslexia is more common in males than in females, and it is found more often in persons who are left-handed. No one knows the cause of dyslexia, but some scientists believe that it may result from chemical changes in a baby"s body long before it is born. They are trying to find ways to teach persons with dyslexia Dyslexic persons think differently and need special kinds of teaching help. After they have solved their problems with language, they often show themselves to be especially intelligent or creative.

单选题The once barren hillsides are now good farmland.

单选题Could you Ucondense/U all the worthwhile information in this book into a few pages?

单选题Man cannot {{U}}exit{{/U}} without water. A. expand B. rise C. live D. quit

单选题The most important result of the Lewis and Clark expedition was that it enabled the United States to claim the Oregon region. A. regret B. problem C. outcome D. controversy

单选题{{B}}第三篇{{/B}} {{B}} London's First Light Rail System{{/B}} The Docklands Light Railway (DLR) took just three years to build at a cost of ￡77 million. It is London's first Light Rail System, but its route follows that of a number of older lines, which carried the nineteenth century railways through the crowded districts of the East End. The section of the line from the Tower Gateway Station to Poplar follows the line of one of London's earliest railways, the London on board each vehicle, Train Captains, who are also fully qualified drivers, are equipped with two-way radios to maintain contact with central control. There are passenger lifts, and self-service ticket machines, at every station.

单选题The children trembled with fear when they saw the policeman.

单选题Please Fasten Your Seatbelts Severe turbulence (湍流) can kill aircraft passengers. Now, in test flights over the Rocky Mountains, NASA (美国航空航天局) engineers have successfully detected clear-air turbulence up to 10 seconds before an aircraft hits it. Clear-air turbulence often catches pilots by surprise. Invisible to radar, it is difficult to forecast and can hurl (用力抛出去) passengers about the cabin. In December 1997, one passenger died and a hundred others were injured when unexpected rough air caused a United Airlines flight over the Pacific to drop 300 meters in a few seconds. However, passengers can avoid serious injury by fastening their seatbelts. "It is the only antidote (对策) for this sort of thing," says Rod Bogue, project manager at NASA"s Dryden Flight Research Center in Edwards, California. The Center"s new turbulence detector is based on lidar, or laser-radar. Laser pulses are sent ahead of the plane and these are then reflected back by particles in the air. The technique depends on the Doppler Effect (多普勒效应). The wavelength of the light shifts according to the speed at which the particles are approaching. In calm air, the speed equals the plane"s airspeed. But as the particles swirl (打漩) in rough air, their speed of approach increases or decreases rapidly. The rate of change in speed corresponds to the severity (激烈程度) of the turbulence. In a series of tests that began last month, a research jet flew repeatedly into disturbed air over the mountain ridges (山脉) near Pueblo, Colorado. The lidar detector spotted turbulence between 3 and 8 kilometers ahead, and its forecasts of strength and duration corresponded closely with the turbulence that the plane encountered. Bogue says that he had "a comfortable amount of time" to fasten his seatbelt. The researchers are planning to improve the lidar"s range with a more powerful beam. The system could be installed on commercial aircraft in the next few years.

单选题As nineteenth-century American cultural aspirations expanded, women stepped into a new role as interpreters of art, both by writing works on art history and by teaching art. A. patronage B. imagination C. ambitions D. opportunities

单选题During the 1840’s, Dorothea Dix was a leader in the movement for the {{U}}reform{{/U}} of prison conditions.

单选题She could fix the machine without referring to the instructions.A. understandingB. observingC. consultingD. obtaining

单选题Thick clouds {{U}}obscured{{/U}} the stars from view. A. darkened B. held C. blackened D. veil

单选题Some industrialized countries are unwilling to spend money in reducing pollution.

单选题Migrant (移民的) Workers In the past twenty years, there has been an increasing tendency for workers to move from one country to another. While some countries have restricted (限制) most (1) to local people, others have attracted and welcomed migrant workers. This is particularly the case in the Middle East, (2) increased oil incomes have enabled many countries to call in outsiders to improve local facilities (设施). Thus the Middle East has attracted oil-workers (3) the U.S. A. and Europe. It has also brought in workers from many other countries, (4) South Korea and Japan. In view of the difficult living and working (5) in the Middle East, it is not surprising that the pay is high to attract suitable workers. Many engineers and technicians can (6) at least twice as much money in the Middle East as they can in their own country, and this is a major (7) . Sometimes a disadvantage has a compensating (补偿的) advantage. For example, the (8) living conditions often lead to increased friendship when workers have to (9) on each other for safety and comfort. In a similar way, many migrant workers can save large sums of money partly because of the (10) of entertainment (娱乐) facilities. The work is often complex and full of problems but this merely presents greater challenge to engineers who prefer to find solutions to problems rather than do (11) work in their home country. One major problem which (12) migrant workers in the Middle East is that their jobs are temporary ones. They are nearly always on (13) , so it is not easy for them to plan ahead with great confidence. This is to be (14) since no country welcomes a large number of foreign workers as permanent residents. In any (15) , migrant workers accept this disadvantage, along with others, because of the considerable financial benefits which they receive.

单选题My friend's parents were very Uupset/U when she didn't phone them from my house.

单选题 下面有3篇短文，每篇短文后有5道题，每道题后面有4个选项。请根据文章的内容，从每题所给的4个选项中选择1个最佳答案。{{B}}第一篇{{/B}} {{B}} Recycling Around the World{{/B}} Recycling is one of the best environmental success stories of the late 20th century. But we could do more. People must not see recycling as fashionable, but essential. The Japanese are very good at recycling because they live in a crowded country. They do not have much space. They do not want to share their limited space with rubbish. But even so, Tokyo area alone is estimated to have three million tons of leftover rubbish at present. In 1996, the United States recycled and composted (制成肥料) 57 million tons of waste (27% of the nation's solid waste). This is 57 million tons of waste which did not go into landfills and incinerators (焚化炉). In doing this, 7,000 rubbish collection programmes and recycling centres helped the authorities. In Rockford, a city in Illinois, US, its officials choose one house each week and check its garbage (废物). If the garbage does not contain any newspapers or aluminium (铝) cans, then the resident of the house gets a prize of at least ＄1,000. In Japan, certain cities give children weekly supplies of tissue paper and toilet paper in exchange for a weekly collection of newspapers. In one year Britain recycles: ·1 out of every 3 newspapers. ·1 out of every 4 glass bottles and jars (罐子). ·1 out of every 4 items of clothing. ·1 out of every 3 aluminium drink cans. In 1999, Hong Kong transported 1.3 million tons of waste to mainland China for recycling. Around 535,000 tons of waste were recycled in Hong Kong itself. Over half the things we throw away could be recycled. That means we could recycle 10 times as much as we do now. However, recycling needs a lot of organisation and special equipment. Also, there is not much use for some recycled material.

单选题下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。 {{B}}第一篇{{/B}} Walking to Exercise the Brain Do you think sitting and studying all the time will improve students'grades? Think again．Getting some exercise may help，too． New research with older people suggests that taking regular walks helps them pay attention better than if they didn't exercise． Previous research had shown that mice learn，remember，and pay attention better after a few weeks of working out on a running wheel．Mice that exercise have greater blood flow to the brain than those who don't．Their brain cells also make more connections． Neuroscientists(神经科学家)from the University of Illinois at Urbana-Champaign wanted to find out if the same thing is true for people．First，they measured the physical fitness of 41 adults，ages 58 to 77，after each person walked 1 mile．Then，participants looked at arrows on a computer screen and had to use computer keys to show which way one particular arrow was pointing． Adults who were physically fit were faster at the arrow task，and their answers were just as accurate as their less-fit peers，the researchers found．The fitter participants also had more blood flow to a part of their brain responsible for paying attention and making decisions． In a second study，15 elderly people who completed a 6-month aerobic-training(有氧运动)course were faster at attention tasks compared with 14 seniors who just did stretching and toning(韵律操)exercises for the same amount of time． So，even going for a walk every 2 or 3 days for just 10 to 45 minutes can help．That should be good news for the elderly． The effects of exercising on the brains of younger people haven't been studied yet．Still，it can't hurt to take occasional breaks and go for a walk or run around with friends．Whatever you do，though，don't try to read and walk at the same time．You could end up hurting yourself!

单选题While serving in the Senate in the early 1970s Barbara Jordan supported legislation to ban discrimination and to deal with environment problems. A. list B. forbid C. handle D. investigate

单选题They postulated a 500-year lifespan for a plastic container.

单选题The economic reform in Japan has been Uaccelerated/U.