单选题We all think that Mary's husband is a very boring person, A. shy B. stupid C. dull D. selfish

单选题The Cherokee Nation Long before the white man came to America, the land belonged to the American Indian nations. The nation of the Cherokees lived in what is now the southeastern part of the United States. After the white man came, the Cherokees copied many of their ways. One Cherokee named Sequoyah saw how important reading and writing were to the white man. He decided to invent a way to write down the spoken Cherokee language. He began by making word pictures. For each word he drew a picture. But that proved impossible-there were just too many words. Then he took the 85 sounds that made up the language. Using his own imagination and an English spelling book, Sequoyah invented a sign for each sound. His alphabet proved amazingly easy to learn. Before long, many Cherokees knew how to read and write in their own language. By 1828, they were even printing their own newspaper. In 1830, the U.S. Congress passed a law. It allowed the government to remove Indians from their lands. The Cherokees refused to go. They had lived on their lands for centuries. It belonged to them. Why should they go to a strange land far beyond the Mississippi River? The army was sent to drive the Cherokees out. Soldiers surrounded their villages and marched them at gunpoint (在枪口的威胁下) into the western territory. The sick, the old and the small children went in carts, along with their belongings. The rest of the people marched on foot or rode on horseback. It was November, yet many of them still wore their summer clothes. Cold and hungry, the Cherokees were quickly exhausted by the hardships of the journey. Many dropped dead and were buried by the roadside. When the last group arrived in their new home in March 1839, more than 4, 000 had died. It was indeed a march of death.

单选题We"ve seen a marked shift in our approach to the social issues.

单选题The turkey is a most popular food on Thanksgiving Day.

单选题If we had discussed it with the manager, he would have surely agree with it.A. unnecessarilyB. simplyC. certainlyD. possibly

单选题In the process，the light energy converts to heat energy． A．reduces B．changes C．1eaves D．drops

单选题In order to improve our standard of living, we have to accelerate production.

单选题 Why Is the Native Language Learnt So Well How does it happen that children learn their mother tongue so well? When we compare them with adults learning a foreign language, we often find this interesting fact. A little child without knowledge or experience often succeeds in a complete mastery of the language. A grown-up person with fully developed mental powers, in most case, may end up with a faulty and inexact command. What accounts for this difference? Despite other explanations, the real answer in my opinion lies partly in the child himself, partly in the behavior of the people around him. In the first place, the time of learning the mother tongue is the most favorable of all, namely, the first years of life. A child hears it spoken from morning till night and, what is more important, always in its genuine form, with the right pronunciation, right intonation, right use of words and right structure. He drinks in all the words and expressions, which come to him in a flash, ever-bubbling spring. There is no resistance:there is perfect assimilation. Then the child has, as it were, private lessons all the year round, while an adult language-student has each week a limited number of hours, which he generally shares with others. The child has another advantage. he hears the language in all possible situations, always accompanied by the right kind of gestures and facial expressions. Here there is nothing unnatural, such as is often found in language lessons in schools, when one talks about ice and snow in June or scorching heat in January. And what a child hears is generally what immediately interests him. Again and again, when his attempts at speech are successful, his desires are understood and fulfilled. Finally, though a child's "teachers" may not have been trained in language teaching, their relations with him are always close and personal. They take great pains to make their lessons easy.

单选题When We Are Asleep Everyone dreams, but some people never recall their dreams, or do so very rarely. Other people always wake up with vivid recollections (记忆) of their dreams, though they forget them very quickly. In an average night of eight hours" sleep, an average adult will dream for around one hundred minutes, probably having three to five dreams, each lasting from ten to thirty minutes. Scientists can detect when someone is having a dream by using an instrument which measures the electrical waves in the brain. During dreaming, these waves move more quickly. Breathing and pulse rate also increase, and there are rapid eye movements under the lids, just as though the dreamer were really looking at moving objects. These signs of dreaming have been detected in all mammals (哺乳动物) studied, including dogs, monkeys, cats, and elephants, and also some birds and reptiles (爬行动物). This period of sleep is called the "D" state for around 50% of their sleep; the period reduces to around 25% by the age of 10. Dreams take the form of stories, but they may be strange and with incidents not connected, which make little sense. Dreams are seldom without people in them and they are usually about people we know. One estimate says that two-thirds of the "cast" of our dream dramas are friends and relations. Vision seems an essential part of dreams, except for people blind from birth. Sound and touch are senses also often aroused, but smell and taste are not frequently involved. In "normal" dreams, the dreamer may be taking part, or be only an observer. But he or she cannot control what happens in the dream. However, the dreamer does have control over one type of dream. This type of dream is called a "lucid" (清醒的) dream. Not everyone is a lucid dreamer. Some people are occasional lucid dreamers. Others can dream lucidly more or less all the time. In a lucid dream, the dreamer knows that he is dreaming.

单选题You must shine your shoes.

单选题The last few weeks have been enjoyable.

单选题Working Mothers Carefully conducted researches that have followed the children of working mothers have not been able to show any long-term problems, compared with children whose mothers stayed at home. My personal 1 is that mother should be allowed to work if they wish. Whether we like it or not, there are a 2 of mothers who just have to work. There are those who have invested such a big part of their lives in establishing a career that they cannot 3 to see it lost. Then there are many who must work out of pure economic 4 . Many mothers are not 5 out to be full-time parents. After a few months at home with a much loved infant, they feel trapped and isolated. There are a number of options when it 6 to choosing childcare. These range from child minders and nannies through to Granny or the kind lady 7 the street. 8 , however, many parents don"t have any choice. They have to accept anything they can get. Be prepared! No 9 how good the childcare may be, some children are going to protest wildly if they are left. This is a 10 normal stage of child development. Babies separate well in the first six months, but soon after that they start to get a crush on Mum and close family 11 . Make sure that in the first week you allow 12 time to help your child settle in. All children are different. Some are independent, while others are more 13 to their mothers. Remember that if you want to 14 the best for your children, it"s not the quantity of time you spend with them, it"s the 15 that matters.

单选题The doctors did not reveal the truth to him.

单选题Taxi Riding In a moment of personal crisis, how much help can you expect from a New York taxi driver? I began studying this question after watching the "Taxicab Confessions", a series of documentaries in which hidden cameras record the secrets of unsuspecting taxi riders. I found the results varied. One morning I got into three different taxis and announced: "Well, it"s my first day back in New York in seven years. I"ve been in prison." Not a single driver replied, so I tried again. "Yeah, I shot a man in Reno," I explained, hoping the driver would ask me why, so I could say casually, "Just to watch him die." But nobody asked. The only response came from a Ghanaian driver: "Reno? That is in Nevada?" Taxi drivers were uniformly sympathetic when I said I"d just been fired. "This is America," a Haitian driver said. "One door is closed. Another is open." He argued against my plan to burn down my boss"s house: "If you do something silly and they put you away, you cannot look for another job." A Pakistani driver even turned down a chance to profit from my loss of hope: he refused to take me to the middle of the George Washington Bridge, a $20 trip. "Why do you want to go there? Go home and relax. Don"t worry. Take a new job." One very hot weekday in July, while wearing a red ski mask and holding a stuffed pillowcase with the word "BANK" on it, I tried hailing a taxi five times outside different banks. The driver picked me up every time. My ride with Guy-Caaude Thevenain, a Haitian driver, was typical of the superb assistance I received. "Is anyone following us?" "No," said the driver, looking in his rearview mirror at traffic and me. "Let"s go across the park," I said, "I just robbed the bank there. I got $25,000." "$25,000?" he asked. "Yeah, you think it was wrong to take it?" "No, man, I work 8 hours and I don"t make almost $70. If I can do that, I do it too." As we approached 86th and Lexington, I pointed to the Chemical Bank. "Hey, there"s another bank," I said, "could you wait here a minute while I go inside?" "No, I can"t wait. Pay me now." His reluctance may have had something to do with money—taxi drivers think the rate for waiting time is too low—but I think he wanted me to learn that even a bank robber can"t expect unconditional support.

单选题The Only Way Is Up Think of a modem city and the first image that come to mind is the skyline. It is full of great buildings, pointing like fingers to heaven. It is true that some cities don't permit buildings to go above a certain height. But these are cities concerned with the past. The first thing any city does when it wants to tell the world that it has arrived is to build skyscrapers. When people gather together in cities, they create a demand for land. Since cities are places where money is made, that demand can be met. And the best way to make money out of city land is to put as many people as possible in a space that covers the smallest amount of ground. That means building upwards. The technology existed to do this as early as the 19th century. But the height of buildings was limited by one important factor. They had to be small enough for people on the top floors to climb stairs. People could not be expected to climb a mountain at the end of their journey to work, or home. Elisha Otis, a US inventor, was the man who brought us the lift - or elevator, as he preferred to call it. However, most of the technology is very old. Lifts work using the same pulley system the Egyptians used to create the Pyramids. What Otis did was attach the system to a steam engine and develop the elevator brake, which stops the lift falling if the cords that hold it up are broken. It was this that did the most to gain public confidence in the new invention, In fact, he spent a number of years exhibiting lifts at fairgrounds, giving people the chance to try them out before selling the idea to architects and builders. A lift would not be a very good theme park attraction now. Going in a lift is such an everyday thing that it would just be boring. Yet psychologists and others who study human behavior fund lifts fascinating. The reason is simple. Scientists have always studied animals in zoos. The nearest they can get to that with humans is in observing them in lifts. "It breaks all the usual conventions about the bubble of personal space we carry around with us — and you just can't choose to move away," says workplace psychologist, Gary Fitzgibbon. Being trapped in this setting can create different types of tensions, he says. Some people are scared of them. Others use them as an opportunity to get close to the boss. Some stand close to the door. Others hide in the corners. Most people try and shrink into the background. But some behave in a way that makes others notice them. There are a few people who just stand in a corner taking notes, Don't worry about them. They are probably from a university.

单选题Why does the author think that the grads are given an extra chance in starting a career?

单选题It took US along time to {{U}}mend {{/U}}the house

单选题When four banks failed in one day, there was a(n) {{U}}panic{{/U}} among businessmen.

单选题Although South Carolina's mineral resources are abundant, not all of them can be mined lucratively. A．molten B．plentiful C．diverse D．precious

单选题 Sleep Necessary for Memories Burning the midnight oil before an exam or interview does harm to the performance according to a recent research which found that sleep is necessary for memories to he taken back into the brain. A good night's sleep within 30 hours of trying to remember a new task is a required condition of having good recall in the weeks ahead, scientists have found. The research, published in the December issue of Nature Neuroscience, showed that it was the act of sleep, rather than the simple passage of time, that was critical for long-term memory formation. "We think that getting that first night's sleep starts the process of memory consolidation (巩固)," said Robert Stickgold, a sleep researcher at Harvard Medical School who conducted the latest study. "It seems that memories normally wash out of the brain unless some process nails them down. My suspicion is that sleep is one of those things that does the nailing down," Professor Stickgold said. With about one in five people claiming that they are so chronically short of sleep that it affects their daily activities, the latest work emphasizes the less well-understood side effect—serious memory impairment (损害). Volunteers in an experiment found it easier to remember a memory task if they were allowed to sleep that night. But for those kept awake, no amount of subsequent sleep made up for the initial loss. Professor Stickgold's team trained 24 people to identify the direction of three diagonal (斜线形的) bars flashed for a sixtieth of a second on a computer screen full of horizontal (水平的) stripes. Half of the subjects were kept awake that night, while the others slept. Both groups were allowed to sleep for the second and third nights to make up for any differences in tiredness between the volunteers. Those who slept the first night were significantly and consistently better at remembering the task while the second group showed no improvement despite enjoying two nights of catch-up sleep.