单选题 1 summary of the physical and chemical 2 of life must begin, not on the Earth, but 3 the Sun; in fact, 4 the Sun"s very center. 5 is here that is to be found the 6 of the energy that the Sun constantly 7 space 8 light and heat. This energy is liberated at the center of the Sun as billions upon billions of nuclei hydrogen atoms 9 each other and 10 to form nuclei of helium, and, 11 doing so, 12 some of the energy that is stored in the nuclei of atoms. The output of light and heat of the Sun 13 that some 600 million tons of hydrogen 14 helium in the Sun every second. This the Sun 15 for several thousands of millions of years.

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单选题3 Kevin Rogers used to be my boss. At that time he was a hard-working, up-and-coming businessman and a real slave-driver, always telling us we had to sell more and more. As soon as I could, I got a job with another company. The last time I saw Rogers was more than ten years ago. At least that's what I thought until last Thursday. But now I'm not so sure. I was on my way back to my office in the center of town. There is a small park nearby which I sometimes walk through after lunch. It is empty, except for an unshaven, shabby looking man on one of the benches. He looked about fifty years old and was wearing an old, gray overcoat. It was a cold, wintry day, and he was shivering. "It's been a long time since I had a meal. Can you help me?" he said. There was some thing about his voice that sounded familiar. I gave him a few coins and he mumbled some thing about being grateful. As he stumbled past me, I looked at his face closely. I won dered where I had seen him before. Then it hit me. Could it possibly be...? No! Impossible, I thought. I watched him walking away. He was the same height as Rogers but looked a lot thinner than I remembered. Then, as he left the park and turned down the street, I caught sight of his face again, this time in profile. The nose was the same as Rogers', too. I al most followed him but something made me stop. I just couldn't be sure. But the resem- blance was very close. Yesterday I ran into someone who had worked for Rogers at the same time I did, and had stayed on longer. I started telling him about the man I had seen in the park. For a mo ment I thought it was our old boss. The voice, the nose, and even the face were just like Rogers, but it couldn't have been. "Rogers must be the director of a big company by now," I said. My ex-colleague shook his head. "I thought you knew. " "Knew? Knew what? What are you talking about?" "Rogers was sent to prison six years ago. He's probably out by now. For all I know he's sleeping on park benches and begging money from passers-by. /

单选题In the second paragraph "straight" means ______.

单选题When you're ready, I'll take you to ______ airport. A. / B. the C. a D. an

单选题We are, therefore, ______ to claim on you to ______ us for the loss of $27500, which we have sustained by the damage to the goods. A．compensate, compelled B．compensated, compelled C．compelled, compensate D．compel, compensate

单选题—Have you visited the Science Museum? —No, but I really wish I ______ . A．will B．have C．did D．had

单选题The market has changed in character because now ______.

单选题 Sometimes we have specific problems with our mother; sometimes, life with her can just be hard work. If there are difficulties in your{{U}} (1) {{/U}}, it's best to deal with them,{{U}} (2) {{/U}}remember that any{{U}} (3) {{/U}}should be done{{U}} (4) {{/U}}person or by letter. The telephone is not a good{{U}} (5) {{/U}}because it is too easy {{U}}(6) {{/U}}either side to{{U}} (7) {{/U}}the conversation. Explain to her{{U}} (8) {{/U}}you find difficult in your relationship and then {{U}}(9) {{/U}}some new arrangements that you think would establish a{{U}} (10) {{/U}}balance between you. Sometimes we hold{{U}} (11) {{/U}}from establishing such boundaries because we are afraid that doing{{U}} (12) {{/U}}implies we are{{U}} (13) {{/U}}her. We need to remember that being{{U}} (14) {{/U}}from our mother does not{{U}} (15) {{/U}}mean that we no longer love her. If the conflict is{{U}} (16) {{/U}}and you cannot find a way to{{U}} (17) {{/U}}it, you might decide to give up your relationship with your mother for a while. Some of my patients had{{U}} (18) {{/U}}"trial separations". The{{U}} (19) {{/U}}allowed things to simmer down, enabling{{U}} (20) {{/U}}.

单选题Nazism and Fascism were ______ to be thrown into the dump of history.

单选题[Focus on the location of the stress] A. include B. convey C. attain D. prosper

单选题He invited all ______ who had ever given him help in the past． A．these B．they C．them D．those

单选题Many a ______ would have a sale without profit rather than to have no sale at all.

单选题Directions: In this part there are four passages, each followed by five questions or unfinished statements. For each of them, there are four suggested answers. Choose the one that you think is the best answer. Mark your ANSWER SHEET by drawing with a pencil a short bar across the corresponding letter in the brackets. We use both words and gestures to express our feelings, but the problem is that these words and gestures can be understood in different ways. It is true that a smile means the same thing in any language. So does laughter or crying. There are also a number of striking similarities in the way different animals show the same feelings. Dogs, tigers and humans, for example, often show their teeth when they are angry. This is probably because they are born with those behavior patterns. Fear is another emotion that is shown in much the same way all over the world. In Chinese and in English literature, a phrase like "he went pale and begin to tremble" suggests that the man is either very afraid or he has just got a very big shock. However, "he opened his eyes wide" is used to suggest anger in Chinese whereas in English it means surprise. In Chinese "surprise" can be described in a phrase like "they stretched out their tongues". Sticking out your tongue in English is an insulting gesture or expresses strong dislike. Even in the same culture, people differ in ability to understand and express feelings. Experiments in America have shown that women are usually better than men at recognizing fear, anger, love and happiness on people's faces. Other studies show that older people usually find it easier to recognize or understand body language than younger people do.

单选题5 Tests conducted at the University of Pennsylvania's Psychological Laboratory showed that anger is one of the most difficult emotions to detect from facial expression. Professor Dallas E. Buzby confronted 716 students with pictures of extremely angry persons and asked them to identify the emotion from facial expression. Only 2 percent made correct judgments. Anger was most frequently judged as "pleased. " And a typical reaction of a student with the picture of a man who was hopping mad was to classify his expression as either "bewildered", "quizzical", or simply "amazed" . Other students showed that it is extremely difficult to tell whether a man is angry or not just by looking at his face. The in vestigators found further that women are better at detecting anger from facial expression than men are. Paradoxically, they found that psychological training does not sharpen one's ability to judge a man's emotions by his expressions but appears actually to hinder it. For in the university tests, the more courses the subjects had taken in psychology, the poorer judgment scores he turned in.

单选题 Crippling health care bills, long emergency-room waits and the inability to find a primary care physician just scratch the surface of the problems that patients face daily. Primary care should be the backbone of any health care system. Countries with appropriate primary care resources score highly when it comes to health outcomes and cost. The US takes the opposite approach by emphasizing the specialist rather than the primary care physician. A recent study analyzed the providers who treat Medicare beneficiaries.The startling finding was that the average Medicare patient saw a total of seven doctors—two primary care physicians and five specialists—in given one year. Contrary to a popular belief, the more physicians taking care of you doesn't guarantee better care. Actually, increasing fragmentation of care results in a corresponding rise in cost and medical errors. How did we let primary care slip so far? The key is how doctors are paid. Most physicians are paid whenever they perform a medical service. The more a physician does, regardless of quality or outcome, the better he's reimbursed. Moreover, the amount a physician receive leans heavily toward medical or surgical procedures. A specialist who performs a procedure in a 30-minute visit can be paid three times more than a primary care physician using that same 30 minutes to discuss a patient's disease.Combine this fact with annual government threats to indiscriminately cut reimbursements, physicians are faced with no choice but to increase quantity to boost income. Primary care physicians who refuse to compromise quality are either driven out of business or to each-only practices, further contributing to the decline of primary care. Medical students aren't blind to this scenario. They see how heavily the reimbursement deck is stacked against primary care. How do we fix this problem? It starts with reforming the physician reimbursement system. Remove the pressure for primary care physicians to squeeze in more patients per hour, and reward them for optimally managing their diseases and practicing evidence based medicine. Make primary care more attractive to medical students by forgiving student loans for those who choose primary care as a career and reconciling the marked difference between specialist and primary care physician salaries.

单选题 Could the bad old days of economic decline be about to return? Since OPEC agreed to supply-cuts in March, the price of crude oil has jumped to almost $26 a barrel, up from less than$10 last December. Tbis near-tripling of oil prices calls up scary memories of the 1973 oil shock, when prices quadrupled, and 1979-1980, when they also almost tripled. Both previous shocks resulted in double-digit inflation and global economic decline. So where are the headlines warning of gloom and doom this time? The oil price was given another push up this week when Iraq suspended oil exports. Strengthening economic growth, at the same time as winter grips the northern hemisphere, could push the price higher still in the short term. Yet there are good reasons to expect the economic consequences now to be less severe than in the 1970s. In most countries the cost of crude oil now accounts for a smaller share of the price of petrol than it did in the 1970s. In Europe, taxes account for up to four-fifths of the retail price, so even quite big changes in the price of crude have a more muted effect on pump prices than in the past. Rich economies are also less dependent on oil than they were, and so less sensitive to swings in the oil price. Energy conservation, a shift to other fuels and a decline in the importance of heavy, energy-intensive industries have reduced oil consumption. Software, consultancy and mobile telephones use far less oil than steel or car production. For each dollar of GDP ( in constant prices) rich economies now use nearly 50% less oil than in 1973. The OECD estimates in its latest Economic Outlook that, if oil prices averaged $22 a barrel for a full year, compared with $13 in 1998, this would increase the oil import bill in rich economies by only 0.25% ~ 0.5% of GDP. That is less than one-quarter of the income loss in 1974 or 1980. On the other hand, oil-importing emerging economies—to which heavy industry has shifted—have become more energy-intensive, and so could be more seriously squeezed. One more reason not to lose sleep over the rise in oil prices is that, unlike the rises in the 1970s, it has not occurred against the background of general commodity-price inflation and global excess demand. A sizable port/on of the world is only just emerging from economic decline. The Economist's commodity price index is broadly unchanging from a year ago. In 1973 commodity prices jumped by 70% , and in 1979 by almost 30%.

单选题When most people think about changing their body shape, they usually focus on just losing weight. Books and magazines about dieting are among the most popular in the world. Dieting is an important part of staying fit and healthy, but losing weight by means of dieting takes time; losing weight too fast can cause great health problems. Dieting means change one's eating habits to a healthier pattern, but many women mistake the concept of dieting and thinking that the less one eats, the better. As a result, they lose health as well as weight. Aerobic exercise is a moderate intensity workout that, over a certain period of time, will provide the body's use of oxygen. Nowadays, aerobic exercise has become a very trendy workout among youths. Not only is performing aerobic exercise interesting, but it is also very beneficial for health. There are different types of aerobics like jogging, swimming, kickboxing, fitness walking, inline skating, bicycling, etc. Aerobics strengthens the heart and lungs. It is also especially popular with women. But neither of these two methods, dieting and aerobics, can help shape the body. To do this, you need to build muscle. So, if a firmer and shapelier body is your goal, 60 percent of your exercise routine should involve strengthening moves, and only 30 percent should be aerobic exercises. For a proper body-shaping routine, you should plan three strength-training sessions a week with weights. Use weights which are as heavy as possible while still allowing you to do 8 to 12 reps of each exercise. Do one to three exercises for each muscle groups — for example, chest and biceps, or back, shoulders and triceps. You should combine this with fast-paced aerobics activities, like swimming, cycling, walking, running, or in-line skating. Plan three to four workouts a week, 15 to 20 minutes each, increasing the pace each week. As you build muscle, you may find that you gain weight in spite of all of your calorie-burning exercise. Don't worry. It's probably muscle, which is denser that fat. And muscle is also a calorie-burning tissue. With more muscle, you can burn more calories, even when you are not exercising. When you are trying to build muscle, you need two to three servings of protein a day, but the main part of your diet should be carbohydrates. And in order to get the energy you need for a high-intensity workout, you should eat something, especially carbohydrates, an hour or so before your workout. While weight training will firm and shape your body, it has other benefits too. It improves bone and muscle strength and burns calories, leading to improved health and a higher quality of life.

单选题Because Jenkins neither __________ nor defends either management or the striking workers, both aides admire his journalistic