未分类题
由于红细胞形态异常引起的常见疾病有:
A.遗传性球形红细胞增多症
B.椭圆形红细胞增多症
C.遗传性热异形性红细胞增多症
D.蚕豆病
E.新生儿溶血
【参考答案】
A,B,C
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Study Confirms Red Meat Link with Bowel(结肠)Cancer People who eat more than 160 grams of red or processed meat a day are 35 percent more likely to develop bowel cancer than those who eat less______(51)20 grams a day, according to one of the biggest nutrition investigations ever carried out. The European Prospective Investigation into Cancer and Nutrition followed 478,040 men and women______(52)35 to 70 from 10 European countries. All subjects were free of cancer at enrollment between 1992 and 1998, but ______(53)an average follow-up of almost 5 years 1,329 bowel cancers had been reported. The subsequent analysis, published in the Journal of the National Cancer Institute, confirms the long-held suspicion______(54)high intakes(纳入量)of red meat are associated with increased bowel______(55)risk. After taking into consideration factors like age, sex, height, weight, energy intake, physical activity, smoking, and alcohol consumption, the investigators found that bowel cancer was______(56)with intake of red and processed meat but not chicken. Risk of bowel cancer dropped with increasing intake of fish. Eating more than 80 grams a day of fish was associated______(57)a 31 percent reduction in risk compared with eating less than 10 grams a______(58). Subjects with high red meat and low fish intake were at 63 percent higher risk of bowel cancer compared with subjects with low red meat and high fish______(59). In addition, the risk of developing the disease was increased for______(60)people who ate a low fibre diet. Sheila Bingham, study investigator at the UK's Medical Research Council nutrition unit, said: 'People have suspected for some time that high levels of red and processed meat______(61)risk of bowel cancer, but this is one of the largest studies worldwide and the first from Europe of this type to show a______(62)relationship.' She added in a statement: 'The overall picture is very consistent for red and processed meat and fibre across all the______(63)populations studied.' Study coordinator, Elio Riboli, of the World Health Organization International Agency for Research into Cancer, said: 'Other risk factors for______(64)cancer include obesity(肥胖)and lack of physical activity. Smoking and excess alcohol may also play a ______(65). These factors were all taken into account in the analysis.'A.fromB.thanC.betweenD.among
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A.from
B.than
C.between
D.among
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单项选择题
Stress at Work and Still Healthy The term could yet become the word of the year: stress is on everyone's lips these days and everywhere. Not only managers, officials and teachers are complaining nowadays, housewives, children and pensioners now also have their own problems. They too sacrifice themselves for others, feel under- or overworked and quickly lose their inner balance. Irritation, tiredness and exhaustion quickly follow. But that is only the negative aspect. Stress, after all, is also linked to positive terms such as joy of life, tension and vitality (活力). 'Firstly, stress is healthy,' says Wolfgang Stehling from EItvelle. The doctor and management consultant says: 'It occurs when the body loses its inner balance, but then stress hormones are produced to re-establish the balance.' Thus stress is nothing more than a positive reaction of the body to pressure. It is unavoidable as part of our nature: 'There is no such thing as a stress-free life.' But whether stress leads to tensions in the mind or to tenseness of the muscles depends on the duration (持续时间), its cause or causes and the sufferer's personal situation. People who have trouble sleeping or suffer from bad moods or simply the flu will not be on top of the world and will take every little strife as negative stress. Others, people who feel refreshed at every new turn, are relaxed and successful, will view a difficult round of negotiations or competition at work more as a positive challenge than a cross to bear. Exercise, healthy eating and relaxation are thus the three pillars by which stress can be conquered almost every time. These factors form. a unit, explains Marita Voelker-Albert, spokeswoman for the government's Nutrition Advice Center in Cologne. Its campaign 'Gut Drauf' (Feeling Good) is targeted at young people. The government agency's research suggests that three out of four adolescents feel tired, overtaxed (负担过重) and under stress. Eating disorders and complaints such as migraines (偏头痛) and indigestion (消化不良), nervousness and concentration problems have increased among 12- to 16-year-olds. But even the best solutions don't work if they are not put into practice, says Stehling. Anybody who goes jogging regularly, practices yoga (瑜伽功) and prescribes good literature as a cure for negative stress, may well end up under more pressure as he tries to find the time for it all. Sometimes, says the consultant, it helps to take time out to reduce stress levels over a weekend.Which of the following is NOT a correct view on stress?A.Stress has both positive and negative aspects.B.Stress is only a positive reaction of the body to pressure.C.Stress is unavoidable as part of our nature.D.Stress only leads to serious problems.
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G.Stress
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I.
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D.Stress
K.
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