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男性,35岁,外伤致胫腓骨中段1/3骨折,手法复位,长腿石膏管型固定。 若该骨折为下1/3骨折,常常会出现延迟愈合或不愈合,原因为

A. 骨折段周围主要血管损伤
B. 骨折段周围主要神经损伤
C. 骨折近端血液供应完全丧失
D. 骨折远端血液供应完全丧失
E. 骨折两端血液供应差

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女性,35岁。颈肩部疼痛伴左上肢放射性疼痛3个月。体格检查:颈部活动受限,颈部肌肉紧张。左牵拉试验(+)。 最可能的诊断是

A. 臂丛神经损伤
B. 脊髓型颈椎病
C. 椎动脉型颈椎病
D. 神经根型颈椎病
E. 吉兰-巴雷综合征

Psychologically there are two dangers to be guarded against in old age. One of these is undue absorption in the past. It does not do to live in memories, in regrets for the old days, or in sadness about friends who are dead. One’’s thoughts must be directed to the future, and to things about which there is something to be done. This is not always easy; one’’s own past is a gradually increasing weight. It is easy to think to oneself that one’’s emotions used to be more active than they are, and one’’s mind more keen. If this is true it should be forgotten, and if it is forgotten it will probably not be true. The other thing to be avoided is clinging tightly to youth in the hope of sucking vigor from its vitality. When your children are grown up they want to live their own lives, and if you continue to be as interested in them as you were when they were young, you are likely to become a burden to them. I do not mean that one should be without interest in them, but one’’s interest should be thoughtful and, if possible, kindly but not unduly emotional. Animals become indifferent to their young as soon as their young can look after themselves, but human beings, owing to the length of early childhood, find this difficult. I think that a successful old age is easiest for those who have strong impersonal interest involving appropriate activities. It is in this sphere mat long experience is really fruitful, and it is in this sphere that the wisdom born of experience can be exercised without being oppressive. It is no use telling grown-up children not to make mistakes, both because they will not believe you, and because mistakes are an essential part of education. But if you are one of those who are incapable of impersonal interest, you may find that your life will be empty unless you concern yourself with your children and grandchildren. In that case you must realize that while you can still render them material services, such as making them an allowance or knitting them sweaters, you must not expect that they will enjoy your company. According to the passage, which of the following would the author advise old people to do

A. Try to mix with the young.
B. Avoid strong personal emotions.
C. Try to remain as active as you were when you were young.
D. Find out your own interests and try to be as actively engaged in them.

为保证电视新闻信息的广泛性和样式的多样性,应该从哪几个方面着手

Given the lack of fit between gifted students and their schools, it is not surprising that such students often have little good to say about their school experience. In one study of 400 adults who had achieved distinction in all areas of life, researchers found that three-fifths of these individuals either did badly in school or were unhappy in school. Few MacArthur Prize fellows, winners of the MacArthur Award for creative accomplishment, had good things to say about their precollegiate schooling if they had not been placed in advanced programs. Anecdotal (名人轶事的) reports support this. Pablo Picasso, Charles Darwin, Mark Twain, Oliver Goldsmith, and William Butler Yeats all disliked school. So did Winston Churchill, who almost failed out of Harrow, an elite British school. About Oliver Goldsmith, one of his teachers remarked, "Never was so dull a boy." Often these children realize that they know more than their teachers, and their teachers often feel that these children are arrogant, inattentive, or unmotivated. Some of these gifted people may have done poorly in school because their gifts were not scholastic. Maybe we can account for Picasso in this way. But most fared poorly in school not because they lacked ability but because they found school unchallenging and consequently lost interest. Yeats described the lack of fit between his mind and school: "Because I had found it difficult to attend to anything less interesting than my own thoughts, I was difficult to teach." As noted earlier, gifted children of all kinds tend to be strong-willed nonconformists, Nonconformity and stubbornness (and Yeats’’s level of arrogance and self-absorption) are likely to lead to conflicts with teachers. When highly gifted students in any domain talk about what was important to the development of their abilities, they are far more likely to mention their families than their schools or teachers. A writing prodigy (神童) studied by David Feldman and Lynn Goldsmith was taught far more about writing by his journalist father than his English teacher. High-IQ children in Australia studied by Miraca Gross had much more positive feelings about their families than their schools. About half of the mathematicians studied by Benjamin Bloom had little good to say about school. They all did well in school and took honors classes when available, and some skipped grades. Many gifted people attributed their success________.

A. mainly to parental help and their education at home
B. both to school instruction and to their parents’’ coaching
C. more to their parents’’ encouragement than to school training
D. less to their systematic education than to their talent

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