单选题The new secretary has written a remarkably concise report only in a few pages but with all the details.

单选题The organization was {{U}}bold{{/U}} enough to face the press. A. pleased B. brave C. powerful D. sensible

单选题We had to abandon the ear and walk the rest of the way.A. give inB. give awayC. give backD. give up

单选题The {{U}}steadily{{/U}} rising cost of labor has greatly increased the cost of shipping cargo by water. A. suddenly B. gradually C. excessively D. exceptionally

单选题He had finished ______ the book and returned it.A. readB. to readC. readingD. reads

单选题She seemed to have detected some anger in his voice.

单选题 Escaping from the Earth The Earth has a force that pulls things toward itself. We call this force gravity(地心引力). This is something we live with all the time, and we take it for granted and hardly ever think about it. But it is a most important factor in rocket operation and must be overcome if we are to get anywhere in space, or off the ground at all. Take the throwing of a ball as an example. The harder the ball is thrown, the faster and higher it will go. What is the secret? Its speed. If we could throw the ball hard enough it would go up and up forever and never come down. The speed at which it would have to be thrown to do this is known as escape speed. Of course, we cannot throw a ball hard enough because the speed required to escape completely from the Earth's gravity is seven miles per second, or over twenty-five thousand miles per hour. Once escape speed has been reached by a spacecraft(宇宙飞船), no further power is needed. A rocket aimed at the Moon, for instance, will "coast"(滑行) the rest of the way because the Earth's gravity cannot then pull it back, and there is no air resistance(阻力) in space to slow it down. This "coasting" is known as "free fall". That does not mean the rocket is falling down towards the Earth but that it is traveling freely in space without the aid of power, like a bicycle coasting downhill. Free fall is an important feature of space travel: it would be impossible to carry enough fuel to provide powered flight all the time.

单选题 Diabetes (糖尿病) and Eye Damage Over 2 million Canadians have diabetes. It is the leading cause of blindness in North Americans under 65 years of age. Diabetes is a condition where the body either cannot produce enough insulin (胰岛素) or cannot respond properly to insulin. Insulin is important because it moves glucose (葡萄糖), a simple sugar, into the body's cells from the blood. The food people eat provides the body with glucose, which is used by the cells as a source of energy. If insulin isn't available or doesn't work correctly to move glucose from the blood into the cells, glucose will stay in the blood, leading to high blood sugar levels. High blood sugar levels damage the blood vessels, including the tiny blood vessels in the eye. This leads to an eye disease known as diabetic retinopathy (糖尿病型视网膜病). The retina (视网膜) is an area at the back of the eye that changes light into nerve signals. With diabetic retinopathy, some blood vessels in the retina are lost, and some of the other blood vessels begin to "leak" blood. This causes the retina to swell, and gradually cuts off its supply of oxygen and nutrients (滋养物). Eventually, the retina starts to grow new blood vessels to replace the damaged ones. Unfortunately, these new vessels are not as strong as the old ones. They are more likely to break, Causing bleeding in the eye. At first, people with diabetic retinopathy will not notice any symptoms. As the disease gets worse, they may notice blurred (模糊的) vision, black spots or flashing lights. As time goes on, it can progress to blindness. Everyone with diabetes is at risk for diabetic retinopathy, and the risk increases the longer you've had diabetes. Fortunately, you can reduce your risk. If you do not have diabetes, but think you may be at risk for this condition, visit your doctor to be screened for diabetes. If you do have diabetes: have frequent eye check-ups. Make sure that you monitor your blood sugar frequently and use your medications as recommended by your doctor. There is evidence to show that keeping your blood sugar under tight control can slow down eye damage. If you have high blood pressure, follow your recommended diet and medications to keep it under control. If you are not sure whether you have high blood pressure, or whether your blood pressure is under control, discuss this with your doctor.

单选题It is difficult to assess the importance of the decision.

单选题The city has decided to do away with all the old buildings in its center.

单选题The news will horrify everyone.

单选题Reading for Pleasure The first thing I want to insist on is that reading should be enjoyable. Of course, there are many books that we all have to read, either to pass examinations or to acquire information, from which it is impossible to extract enjoyment. We are reading them for instruction, and the best we can hope is that our need for it will enable us to get through them without tedium. Such books we read unwillingly rather than willingly. But that is not the sort of reading I have in mind. The books I shall mention in due course will help you neither to get a degree nor to earn your living, they will not teach you to sail a boat or run a stopped motor, but they will help you to live more fully. However, they cannot do unless you enjoy reading them. Every man is his own best critic. Whatever the learned say about a book, however unanimous they are in their praise of it, unless it interests you, it is no business of yours. Don't forget that critics often make mistakes; the history of criticism is full of the serious mistakes some of them have made, and you are the final judge of the value to you of the book you are reading. This, of course, applies to the books I am going to recommend to your attention. We are none of us exactly like everyone else, only rather like, and it would be unreasonable to suppose that the books that have meant a great deal to me should be precisely those that will mean a great deal to you. If any of you who are not interested in the books I introduce to you, just put them down; they will be of no service to you if you do not enjoy them. No one is under an obligation to read poetry, fiction or literature. He must read them for pleasure, and who can claim that what pleases one man must necessarily please another?

单选题Most sound vibrations arrive at the eardrum by way of the auditory canal.

单选题The people who speak Esperanto(世界语) hope that the language someday will become the international language for trade, science, and diplomacy.A. commonB. uniqueC. officialD. well-known

单选题Education of Students with Vision Impairments This is specially designed education for children who are either partially sighted or blind. Vision impairments are diagnosed by medical doctors who examine the physical structures in the eye and evaluate the child's ability to see shapes of different sizes at various distances. In the United States, approximately 12 out of 1,000 children receive some form of special education because of visual impairments. Partially sighted children may use a variety of adaptive aids to see more clearly and to read printed text. These aids include magnifiers, which may be attached to eyeglasses; electronic systems for enlarging print and making it easier to see; and large-print books. Blind children usually are taught to read Braille, a system of raised dots embossed on paper and read by touch. In the past, turning conventional books into pages of Braille was very time-consuming, and the large books required enormous storage areas. However, most Braille texts are now done electronically. Many students read paperless Braille with the aid of machines that mechanically raise the dots in a small panel as the reader progresses through the text. Because Braille cannot be read very rapidly, many blind students prefer to listen to books being read on tapes. Some students also use reading machines equipped with cameras that scan lines of print, which computers then convert to synthesized speech. Many blind and partially sighted children receive orientation and mobility training as a part of their education. Specialists teach them how to travel independently in their schools and communities, often with an aid, such as a cane. Most children with vision impairments are educated in schools within their communities. Vision specialists may provide special materials and equipment, help teachers and classmates understand the children's condition, and possibly provide additional instruction. The specialists may also teach partially sighted children how to use their remaining vision more effectively and instruct them in the use of adaptive aids. Some children with vision impairments attend special schools designed to meet their particular needs. Like boarding schools, these schools often provide residential services as well as educational programs. They also have specially designed facilities, which may not be found in neighborhood schools, for blind children to participate in athletics and other activities. The education of many children with vision impairments is further complicated by their having other disabilities, such as physical disabilities, developmental impairments, or hearing loss.

单选题 Old And Active It is well-known that life expectancy is longer in Japan than in most other countries. A {{U}} {{U}} 1 {{/U}} {{/U}}report also shows that Japan has the longest health expectancy in the world. A healthy long life is the result of the {{U}} {{U}} 2 {{/U}} {{/U}}in social environment. Scientists are trying to work {{U}} {{U}} 3 {{/U}} {{/U}}exactly what keeps elderly Japanese people so healthy, and whether there is a lesson to be {{U}} {{U}} 4 {{/U}} {{/U}}from their lifestyles for the rest of us. Should we {{U}} {{U}} 5 {{/U}} {{/U}}any changes to our eating habits, for instance, or go jogging each day before breakfast? Is there some secret {{U}} {{U}} 6 {{/U}} {{/U}}in the Japanese diet that is particularly {{U}} {{U}} 7 {{/U}} {{/U}}to the human body? Another factor {{U}} {{U}} 8 {{/U}} {{/U}}to the rapid population aging in Japan is a decline in birthrate. Although longer life should be celebrated, it is {{U}} {{U}} 9 {{/U}} {{/U}}considered a social problem. The number of older people had {{U}} {{U}} 10 {{/U}} {{/U}}in the last half century and that has increased pension and medical costs. The country could soon be {{U}} {{U}} 11 {{/U}} {{/U}}an economic problem, if there are so many old people to be looked {{U}} {{U}} 12 {{/U}} {{/U}}, and relatively few younger people working and paying taxes to support them. {{U}} {{U}} 13 {{/U}} {{/U}}the retirement age from 65 to 70 could be one solution to the problem. Work can give the elderly a {{U}} {{U}} 14 {{/U}} {{/U}}of responsibility and mission in life. It's important that the elderly play active {{U}} {{U}} 15 {{/U}} {{/U}}in the society and live in harmony with all generations.

单选题hope you can submit you term papers before the deadline.A. hand inB. hand outC. hand onD. handback

单选题Sleeplessness Insomnia or sleeplessness is a common complaint of women as they enter into menopause. Insomnia means having trouble falling asleep or staying asleep or the feeling that your sleep was not adequate for you. For women who are having night sweats, their sleep is broken by frequent awakening and therefore not refreshing. Generally once the night sweats are controlled a normal sleep pattern returns. If it doesn't it may be, or have become chronic insomnia. How do you know? If you suffer from insomnia every night or most nights for a period of one month then you have chronic insomnia. If you're not having night sweats then it's time to look for other causes of sleeplessness. Depression and anxiety disorders are the most common causes of chronic insomnia. If you feel depressed you need to be checked by a qualified health care provider. Movement disorders such as restless leg syndrome are second on the list of insomnia for them, there are new medicines that may help. Other common causes are shift working, and pain. In up to 30% of people with chronic insomnia no cause can be identified. Medical treatment of these people has generally been with sleeping pills. It is estimated that 25% of the adult population in America took some type of medicines for sleep last year. It is generally agreed that sleeping pills should only be in the lowest dose and for the shortest possible time. Sleep hygiene is directed at changing bad sleep habits. The recommendations are: —Go to bed only when sleepy.—Do not wait up to a specilized time.—Avoid caffeine and alcohol in the evening, etc.

单选题The doctors have abandoned the hope to rescue the old man.

单选题A Desert Between Paul and Clara Paul had long promised to marry Clara. But at thirty?thee he met and married Alice. Clara was driven mad. Paul was taken to court. The judge ordered him to pay Clara$600 because of the broken promise. Paul had to borrow the money from a moneylender. He agreed to pay back$5 a month—for twenty years. His wages at the time were $16 a month. Paul and Alice were poor but not unhappy. They had little enough food, certainly, even before the children began to arrive. Each month Paul paid$5 to the moneylender. He worked hard, never taking a holiday. In time, there were seven mouths to feed. Illness was always with them. It grew serious when the oldest child was eight. The years of hunger weakened the family, because each month Paul paid$5. The details of the sickness were ugly, but the result was this：after twelve years of family life, Paul was alone in the world. He lived alone. except for memories. Work was not now a god for him：it was a pain-killer. Each month he paid, and in time the twenty years ended. From that moment his wages were his own. One day, It was a holiday went to the seaside. He sat down on a seat by the sea. A middle. aged woman came and sat down near him. They recognized each other at once. The woman said. "The$600 has been in the bank since the day it was paid to me. It is now $6, 000, and I have kept it for you. Will you let me share it with you?” "No, ”said Paul, gently. "Each thousand is a lost life in a desert between us. It can never bring any happiness. ”