单选题Animals seem to have the sense to eat when they are hungry and they do not eat more than their bodies need. It has been demonstrated that rats will, when given a choice over a period of time, prefer water with vitamins to water without vitamins even though there is no difference in taste or smell between the two water bottles. When a fragrant flavor was added to the vitamin-enriched fluid, the rats did seem to develop a taste for it and kept drinking it, even after the vitamins were switched to the clear water. In time, however, they broke the habit and went back to where the necessary vitamins were. In a classic experiment, babies of 6 to 12 months old were placed in a cafeteria feeding arrangement, with a wide selection of baby food before them. They were given whatever food they pointed to or appeared interested in. We are told that at first they showed some unusual eating patterns, but that over a period of time they managed to select well-balanced diet. So, in selecting food, rats and babies do seem to know and act on what's best for them. Apparently, there is a kind of "body wisdom", which humans soon lose. Most of us do not eat as wisely as we could. Many of our food preferences are culturally determined and influenced by long-established habits. Some people eat fox, dog and blackbirds, while we eat cows and pigs. So what people eat and how much they eat seems to be greatly influenced by what is going on around them.

单选题Costs of doing so come cheap when measured against an overall advertising ______. A. bail B. brokerage C. budget D. bill

单选题She refused to tell us the ______ of the news although we insisted that she should.

单选题He was urgent in his demands.

单选题Who ______ has read Tolstoy's great novels can forget their fascination? A. who B. which C. that D. ever

单选题That sentence was hard to understand, so I had to have my teacher ______ it for me. A. to explain B. explain C. explaining D. to be explaining

单选题 In the same way that a child must be able to move his arms and legs before he can learn to walk, the child must physiologically be capable of producing and experiencing particular emotions before these emotions can be modified through learning. Psychologists have found that there are two basic processes by which learning takes place. One kind of learning is called "classical conditioning." This occurs when one event or stimulus is continuously followed by a reward or punishment. It is through classical conditioning that a child learns to associate his mother's face and voice with happiness and love, for he learns that this person provides food and comfort. Negative emotions are learned in a similar fashion. The second kind of learning is called "operant (动作的) conditioning." This occurs when an individual learns to do things that produce rewards in his environment and learns not to do things that produce punishments. For example, if a mother always attends to her baby when he cries and cuddles him until he is quiet, she may teach him that if he cries he will get attention from mother. Thus, the baby will learn to increase his crying in order to have his mother more.

单选题We'll all take a vacation in the mountains as soon as I finish working ______ my project. A. on B. with C. in D. about

单选题______ the train accident was a miracle. A. The child would survive B. Why the child survived C. That the child survived D. When the child survived

单选题 THE SOCIETY FOR BIOMATERIALS Takes Pleasure in Announcing its STUDENT AWARD FOR OUTSTANDING RESEARCH Which will be awarded to student researchers Who have shown outstanding achievement in biomaterial research Applications may be made in one of the following categories: 1. Hospital intern (实习医生), resident or clinical fellow 2. Undergraduate, Master or Health Science degree candidate 3. Ph. D. degree candidate or equivalent Recipient will present their paper at the Society for Biomaterials meeting in Clemson, South Carolina, and be the guest of the Society during its meeting, April 28 to May 1,2007. Each recipient will receive: 1. Travel and living expenses up to $300 2. Certificate of Award 3. Registration for the Scientific Session 4. Tickets to all official functions 5. Publication of abstract in the Transactions of the Society for Biomaterials 6. Publication of paper in Journal of Biomedical Materials Research Recipient will he selected on the basis of submitted papers which must be received along with completed application forms no later than November 30,2006. For application, write to Student Awards Society for Biomaterials c/o Robert A. James, Doctor of Dental Science Loma Linda University SD Loma Linda, California 92354

单选题To ______ the world peace has been one of the most crucial functions of the United Nations since it was founded in 1945. A. sustain B. maintain C. contain D. retain

单选题Even a child would not be ______ by such an obvious lie.

单选题A series of lectures on radio engineering ______ scheduled. A. have been B. has been C. are D. had been

单选题Jack: I'd like a haircut, please. Barber: Would you care for a shave and a shampoo as well7 Jack: ______. A haircut will be just fine.

单选题He as well as I ______ you on that point.

单选题{{B}}Passage Two{{/B}} At some time in your life you may have a strong desire to do something strange or terrible. However, chances are that you don't act on your impulse, but let it pass instead. You know that to commit the action is wrong in some way and that other people will not accept your behavior. Perhaps the most interesting thing about the phenomenon of the behavior is how it can change over the years within the same society, how certain behavior and attitudes once considered taboo can become perfectly acceptable and natural at another point in time. Topics such as death, for example, were once considered so upsetting and unpleasant that it was a taboo to even talk about them. Now with the publication of important books such as On Death and Dying and Learning to Say Goodbye, people have become more aware of the importance of expressing feelings about death and, as a result, are more willing to talk about this taboo subject. One of the newest taboos in American society is the topic of fat. Unlike many other taboos, fat is a topic that Americans talk about constantly. It's not taboo to talk about fat; it's taboo to be fat. The "in" look is thin, not fat. In the work world, most companies prefer youthful-looking, trim executives to sell their image as well as their products to the public. The thin look is associated with youth, vigor and success. The fat person, on the other hand, is thought of as lazy and lacking in energy, self-respect. After all, people think, how can people who care about themselves, and therefore the way they look, permit themselves to become fat? In an image-conscious society like the U.S., thin is "in", fat is "out".

单选题A: I'm looking for a white long-sleeved shin, size 38. B. ______ A. How about this one? B. What about this one? C. What did you say? D. Would you like this one?

单选题 If those "mad moments"—when you can't remember what your friend has told you or where you left your keys—are becoming more frequent, mental exercises and a healthy brain diet may help. Just as bodies require more maintenance with the passing years，so do brains，which scientists now know show signs of aging as early as the 20s and 30s．"Brain aging starts at a very young age, younger than any of us had imagined and these processes continue gradually over the years," said Dr．Gary Small, the director of the Center on Aging at the University of California, Los Angeles. "I'm convinced that it is never too early to get started on a mental or brain-fitness program," he added. In his book, The Memory Bible, the 51-year-old neuroscientist(神经学家)lists what he refers to as the 10 suggestions for keeping the brain young. They include training memory, building skills, reducing stress, mental exercises, brain food and a healthy lifestyle. It's a game plan for keeping brain cells sparking and neural networks in perfect shape. "Misplacing your keys a couple of times don't mean you should start labeling your cabinets. Memory loss is not an inevitable consequence of aging. Our brains can fight back," he said. Small provides the weapons for a full-scale attack. Simple memory tests give an indication of what you are up against and tools such as "look" and "connect" are designed to make sure that important things such as names and dates are never forgotten. "So if you wanted to learn names and faces, for example, you meet Mrs．Beatty and you notice a distinguishing facial feature, maybe a high eyebrow," said Small. "You associate the first thing that comes to mind. I think of the actor Warren Beatty so I create a mental picture of Warren Beatty kissing her brow." Small admits it may sound a bit strange but he says it works. "Mental exercises could be anything from doing crossword puzzles and writing with your left hand if you are right handed or learning a language. It could be anything that is fun that people enjoy doing," he added. He also recommends physical exercise, a low-fat diet and eating foods rich in fatty acids, such as fish, nuts, and fruits and vegetables high in antioxidants(抗氧化剂)including blueberries and onions in addition to reducing stress.

单选题{{B}}Text 2{{/B}} Tens of thousands of 18-year-olds will graduate this year and be handed meaningless diplomas. These diplomas won't look any different from those awarded their luckier classmates. Their validity will be questioned only when their employers discover that these graduates are semiliterate (半文盲). Eventually a fortunate few will find their way into educational-repair shops-adult-literacy programs, such as the one where I teach basic grammar and writing. There, high-school graduates and high-school dropouts pursuing graduate-equivalency certificates will learn the skills they should have learned in school. They will also discover they have been cheated by our educational system. I will never forget a teacher who got the attention of one of my children by revealing the trump card of failure. Our youngest, a world-class charmer, did little to develop his intellectual talents but always got by. Until Mrs. Stifter. Our son was a high-school senior when he had her for English. "He sits in the back of the room talking to his friends," she told me. "Why don't you move him to the front row?" I urged, believing the embarrassment would get him to settle down. Mrs. Stifter said, "I don't move seniors. I flunk(使……不及格) them. " Our son's academic life flashed before my eyes. No teacher had ever threatened him. By the time I got home I was feeling pretty good about this. It was a radical approach for these times, but, well, why not? "She's going to flunk you," I told my son. I did not discuss it any further. Suddenly English became a priority(头等要事) in his life. He finished out the semester with an A. I know one example doesn't make a case, but at night I see a parade of students who are angry for having been passed along until they could no longer even pretend to keep up. Of average intelligence or better, they eventually quit school, concluding they were too dumb to finish. "I should have been held back," is a comment I hear frequently: Even sadder are those students who are high-school graduates who say to me after a few weeks of class, "I don't know how I ever got a high-school diploma. " Passing students who have not mastered the work cheats them and the employers who expect graduates to have basic skills. We excuse this dishonest behavior by saying kids can't learn if they come from terrible environments. No one seems to stop to think that most kids don't put school first on their list unless they perceive something is at risk. They'd rather be sailing. Many students I see at night have decided to make education a priority. They are motivated by the desire for a better job or the need to hang on to the one they've got. They have a healthy fear of failure. People of all ages can rise above their problems, but they need to have a reason to do so. Young people generally don't have the maturity to value education in the same way my adult students value it. But fear of failure can motivate both.

单选题Directions: For each blank in the following passage, choose the best answer from the choices given below. Mark your answer on the ANSWER SHEET by drawing with a pencil a short bar across the corresponding letter in the brackets. Quite a few years ago when the summers seemed longer and life was not that complicated, we had rented a cottage by a fiver in the heart of the country {{U}} {{U}} 1 {{/U}} {{/U}}the whole family was going to {{U}} {{U}} 2 {{/U}} {{/U}}a three-week holiday. There were four of us: Mum and Dad, Mum's sister -- Aunt Jane and I. And I mustn't forget to {{U}} {{U}} 3 {{/U}} {{/U}}Spot, our little dog. I was allowed to go off by myself all day, {{U}} {{U}} 4 {{/U}} {{/U}}I promised to be careful and took Spot with me for protection. One nice day I went out fishing with Spot when we heard a lot of shouting in the {{U}} {{U}} 5 {{/U}} {{/U}}followed by a scream and splash. I was a bit {{U}} {{U}} 6 {{/U}} {{/U}}so I called Spot and we both hid behind a bush. After a few moments, a straw hat came drifting down the river, followed by an oar, a picnic basket and {{U}} {{U}} 7 {{/U}} {{/U}}oar. Then came the rowing boat itself, but it was {{U}} {{U}} 8 {{/U}} {{/U}}upside down! A few seconds later my Dad and Aunt Jane came running down the river bank, both wet {{U}} {{U}} 9 {{/U}} {{/U}}. Spot started barking so I came out of hiding and said hello. My Dad got really angry at me for not trying to catch the boat as it went past. Luckily, {{U}} {{U}} 10 {{/U}} {{/U}}, the boat and both the oars had been caught by an overhanging tree a little further downstream, but not the hat or picnic basket. So I had to let them share my sandwiches.