单选题That guy is really Uwitty/U.

单选题______ I admit that the problems are difficult. I don' t agree that they cannot be solved.A. WhenB. WhereC. WhileD. Why

单选题When I was about six years old, my mother came home one clay and found that I had collected half a dozen babies of the neighborhood-all of them too young to walk-and had them sitting before me on the floor while I was teaching them to wave their arms. When she asked the explanation of this, I informed her that it was my school of dance. She was amused, and placing herself at the piano, she began to play for me. This school continued and became very popular. Later on, little girls of the neighborhood came and their parents paid me a small sum to teach them. This was the beginning of what afterwards proved a very lucrative occupation. My mother took me to a very famous ballet teacher, but his lessons did not please me. When the teacher told me to stand on my toes I asked him why, and when he replied "because it is beautiful," I said that it was ugly and against nature and after the third lesson I left his class, never to return. This stiff and commonplace gymnastics which he called dancing only disturbed my dream. I dreamed of a different dance. I did not know just what it would be, but I was feeling out towards an invisible world into which I guessed I might enter if I found the key. My art was already in me when I was a little girl, and it was owing to the heroic and adventurous spirit of my mother that it was not stifled. I believe that whatever the child is going to do in life should begin when it is very young. I wonder how many parents realize that by the so-called education they are giving their children, they are only driving them into the commonplace, and depriving them of any chance of doing anything beautiful or original.

单选题In Britain and many other countries appraisal is now a tool of management.

单选题The old car jolted along the country road at a snail's pace.A. rodeB. dawdledC. honkedD. bounced

单选题Which is NOT true of sparklers?

单选题 Cancer develops over a long time, which means that you have years——typically decades——in which to hinder or promote it. Researchers are finding that what you eat may interfere with cancer growth at various stages. For example, certain foods can block the chemicals that initate cancer. Antioxidants(抗氧化剂), found in some vitamins and minerals, can snuff out oxygen free radicls (氧自由基), substances that are thought to make cells more susceptible to cancer, and they can even repair some of the cellular damage that has been done. And some food—wheat bran(麦,糠) in particular—has been shown to shrink precancerous(癌症前期的) cells. A recent review of 17 studies from 17 nations reveals that people who eat the most fruits and vegetables have about half the cancer raters of those who eat the least. In fact, some research suggests that frequent consumption of fruits and vegetables can cut the risk of lung cancer even in smokers. One of the most studied antioxidants in vegetables and fruits thought to protect against cancer is beta-carotene(β胡萝卜素), concentrated in deep green, yellow and orange vegetables such as carrots, sweet potatoes and spinach. Research also shows that beta-carotene can change in the body to retinoic acid (维生素A酸), a substance used in clinical trials to treat certain cancers. Here are some of the foods that contain cancer-fighting chemicals. Tomatoes. One of the compounds in tomatoes that is thought to reduce the risk of cancer is lycopene(蕃茄素), the pigment (色素) that makes tomatoes red. Lycopene, an antioxidant that is also found in watermelons and apricots, quenches certain cancer-triggering oxygen free fadicals. Healthy people with the most blood lycopene. Green Vegetables. A recent Italian study showed that dark-green leafy vegetables lower the risk of many cancer. Spinach, broccoli, kale and dark-green lettuces are chock-full of antioxidants, including beta-carotene, folate(叶酸) and lutein(叶黄素).A good rule of thumb(单凭经验的做法) : the darker the vegetable, the more antioxidants within. Pungent preventives(刺激性的预防物). A whole host of chemicals thought to have cancer-inhibiting properties have been identified in allium vegetables, which include garlic, onions and scallions(大葱). Animal studies show that many of these chemicals block carcinogens that have been linked to colon, stomach, lung and liver cancer. A study at Pennsylvania State University found that feeding rats various garlic extracts and preparations(配制好的食物) reduced mammary tumors by as much as 71 percent. In humans, studies suggest that those who eat more onions and garlic are less prone to gastrointestinal cancer. Research suggests that garlic compounds may even interfere with cancer progression. A recent German study found that ajoene, a garlic compound, is toxic to malignant cells. Garlic may also antagonize existing cancer by boosting(促进) immune functions, according to researchers at Loma Linda University School of Medicine. Their study, done on mice, found that garlic's sulfur compounds increased the activity of macrophages and T-lymphocytes(淋巴细胞), two of the components of the immune system that destroy tumor ceils.

单选题We must make up an excuse for being late.

单选题The scientists began to accumulate dat

单选题In judging our work you should take into consideration the fact that we have been very busy recently.

单选题Dial direct when you can, and to be sure you call when Americans are in their offices, use the {{U}}schedule{{/U}} at the left.

单选题It is completely out of our expectation that he came to such a party.A. simplyB. almostC. totallyD. finally

单选题 阅读下面这篇短文，短文后列出了7个句子，请根据短文的内容对每个句子做出判断。 {{B}}Stem Cell Therapy May Help Repair the Heart{{/B}} According to scientists in the USA, stem cell therapy may one day be able to repair the hearts of people with heart failure. Researchers at Pittsburgh University School of Medicine examined 20 patients who had severe heart failure and were going to have surgery. They injected stem cells into the parts of their hearts that were damaged. They then compared their hearts with those of people who had undergone surgery without having the stem cells injected into them (they had also suffered from severe heart failure). The patients who had had the stem cells injected had hearts that were able to pump (用泵抽运) more blood than the others. According to Professor Robert Kormos, one of the researchers, these results could revolutionize heart treatment. Although previous studies had indicated that there might be a benefit, this is the first study that has actually proved that stem cell therapy can help the failing heart work better. All the patients in this study had hearts that could not pump blood properly. The scientists measured their ejection fraction (射血分数). This is a measure of heart performance; you measure how much blood is being pumped out by the left ventricle (心室). Healthy people's ejection fraction is about 55%. These patients had ejection fraction of under 35%. They all had by-pass surgery (搭桥手术) performed on them. Some of the patients had stem cells taken from their hip bones and injected into 25-30 sites in the damaged heart muscle. Six months later their ejection fraction rate was 46.1% while those who just had surgery but no stem cell injections averaged 37.2%. No side effects were reported. Heart failure is a common problem all over the world. In the UK alone about 650,000 people suffer from heart failure every year. As the number of people suffering from heart failure increases in the world in general these findings are particularly significant. Current treatments relieve the symptoms. This new stem cell therapy actually repairs the damaged muscle in the heart and has the potential of curing the disease.

单选题The union representative put across her argument very effectively.

单选题We have to Uput up with/U her behavior.

单选题 U. S. States Do Poorly in Women's Health Not a single U. S. state meets basic federal goals for women's health, and the nation as a whole fails except in two areas—mammograms and dental check-ups—researchers said on Thursday. Millions of women lack health insurance, and states make it difficult to enroll in Medicaid, the state-federal health insurance plan for the poor, according to the report. And few states are doing anywhere near enough to help women quit smoking—the leading cause of death in the United States. "The nation as a whole and the individual states fall short of meeting national goals," reads the report. Put together by the National Women's Law Center and the Oregon Health Science University, "These health goals provide a road map for assessing the status of women's health." Of 27 measures examined by the group, from screening for diseases to actually treating them, the nation passes on only two, the researchers said. "The nation is so far from the healthy people goals that it receives an overall grade of 'unsatisfactory'," they wrote. The problem seems to be a lack among states of an overall plan for health in general, the NWLC said. "State policy makers' piecemeal approach to our health care crisis has resulted in a complex and ineffective system that fails to meet the health care needs of women," Judy Waxman, NWLC Vice President for Health, said in a statement. "Lawmakers need to take a comprehensive, long-term approach to meeting women's health needs and tackle this serious problem that plagues so many families."

单选题Deaf and Hearing Loss People who begin to go deaf in adult life have different problems from those who are horn deaf. They have to learn different ways of behaving and different ways of communication—perhaps at a time when learning is not all that easy. A hearing aid is not a complete solution to the problem. The sound perceived by the deaf person through a hearing aid is distorted and appears to have more background noise than is heard by someone with normal hearing. Deafened people have to lipread as well. Lipreading is difficult, demands intense concentration, and an uninterrupted direct view of the speaker's face. No other activities can take place at the same time: the lipreader has to stop eating, stop everything in order to concentrate on hearing. It is not a question of stupidity or bad temper—as it sometimes appears to be—but a question of being very easy to misunderstand when the sound is distorted. Remember what it's like trying to communicate on a very bad telephone line. Frustrating, isn't it? The deaf have to face all the time. A useful way of looking at the problem is to see the deaf person as a foreigner—to treat them as of you were in a foreign country. You would speak more clearly, slowly and raise your voice slightly. And you'd use gestures to make your meaning clear, as well as have no hesitation in using pencil and paper to be absolutely certain. You can do all those things with the deaf—as well as making sure you don't obscure your mouth with your hand, a pipe or a cigarette. Another point quite often overlooked is that a hearing aid may be quite efficient and useful in a quite carpeted room—but try it in the high street in the rush hour, in a noisy car, in a railway station ticket office, a cinema or a concert hail and you've got a really difficult problem to distinguish speech. So don't suggest to or encourage deaf people to go to functions which are going to make their disability appear worse—and increase their sense of failure. On the other hand careful selection of cinemas with good sound systems is important and you should experiment to find out where the best seats are for hearing, fitting adaptors for radio and television, observing which friends are easier to understand, and making sure that people talking are well-lit and all useful and positive activities.

单选题I had some difficulty in carrying out the plan.

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。如果该句提供的是正确信息，请选择A；如果该句提供的是错误信息，请选择B；如果该句的信息文章中没有提及，请选择C。 Because headaches are a part of almost all of our lives, people with chronic headaches sometimes don't realize that they may need to see a doctor. They tend to believe, incorrectly, that their headaches are like everyone else's and they will only be "bothering(打扰，麻烦)" the doctor. "When should somebody seek medical help for headaches? neurologist Seymour Diamond asks rhetorically (提出问题进行探讨). Generally, whenever headaches are associated with neurological signs, such as dizziness(头昏，头晕), weakness in a limb or limbs, vision impairment of any sort—including seeing flashing lights—they warrant(应受) immediate attention. Additionally, Diamond says that you should seek medical attention: If you suffer from almost daily headaches; If the headache is a type you've never had before, or there has been a change in the character(特征) of the headache; If you're losing time from work or activities, or otherwise being prevented from functioning. Even if your headaches are less dramatic than those described here, if they are a re- al problem to you, you should seek help. It may be that your doctor will be unable to find a physical cause for your discomfort, but that may point you in other directions to find relief. Some headaches, particularly those caused by tension, have a major psycho- logical component that might be relieved through counseling (走向，指导).

单选题The house is filled with crevices due to the attacking of the earthquake to the city last night.