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听力原文：F: Our work on these microchips has achieved a very significant improvement in performance quality. The sheer quality of the picture which will be produced as well as superb sound coming out of our revolutionary speakers should make the new product unbeatable.
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- A.
(17)
【参考答案】
C,C
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未知题型
Questions 28-30Complete the summary on auditory learners using NO MORE THAN THREE WORDS for each gap.-- Students listen to a 【28】 ______ and draw what they hear or the teacher could describe a picture and the teacher and students can see whose picture was closest to the original.-- Each student gets a flash card and holds up their card when the 【29】 ______ is used in a song, poem or story. Students add a sentence to a story, including the word on their flash card.-- The teacher gives the students lyrics with some words replaced by 【30】 ______ words. Students listen to the song and make corrections.【28】
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未知题型
Old age in the United States presents manyproblems and opportunities. With the result of 【S1】______improved medical services, people live longer than theyused to. This increase in longevity creates a wide rangeof social needs that didn't exist when the average lifeexpectancy was higher. The medical specialty of 【S2】______gerontology (老年医学) has opened research areas andcareers related to the elderly.Because of changes in the family structure fromextended to nuclear, the elderly has to create existences 【S3】______
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未知题型
Cancer is a disease in which cells multiply without control, destroy healthy tissue, and endanger life. About 100 kinds of cancer attack human beings. The disease is a leading cause of death in many countries. In the United States and Canada, only diseases of the heart and blood vessels kill more people. Cancer occurs in most species of animals and in many kinds of plants, as well as in human beings.2. Cancer strikes people of all ages but especially middle-aged persons and the elderly. It occurs about equally among people of both sexes. The disease can attack any part of the body and may spread to other parts. However, the parts most often affected are the skin, the digestive organs, the lungs, the male prostate, and the female breasts.3. Scientists do not know exactly why cancer develops. Most experts agree that people develop cancer mainly through repeated or prolonged contact with one or more cancer-causing agents, called carcinogens. These agents include the tars in tobacco smoke, a variety of other chemicals, and certain kinds of radiation. In many cases, cancer can be prevented if a known agent is avoided or eliminated. The elimination of cigarette smoking, for example, would prevent most cases of lung cancer and about a third of all cases of cancer. Scientists also believe that some people may inherit a tendency to develop cancer.4. Without proper treatment, most kinds of cancer are fatal. Only a doctor can diagnose cancer. But in many cases, a doctor is consulted only after the disease is far advanced. A person should therefore be alert to any physical change that may be a symptom of cancer. Early detection greatly increases the chances of a cure.5. Cancer shows no symptoms in its beginning stages. But symptoms may appear before the disease spreads. The American Cancer Society lists seven such warning signals. They are: (1) Change in bowel or bladder habits; (2) A sore that does not heal; (3) Unusual bleeding or discharge; (4) Thickening or lump in breast or elsewhere; (5) Indigestion or difficulty in swallowing; (6) Obvious change in wart or mole; (7) Nagging cough or hoarseness. A person who has any of these symptoms longer than two weeks should consult a physician promptly.
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