2. 外语
  3. Read the following passage and choose the best word for each space. The need for a surgical operation,【C1】______an emergency

Read the following passage and choose the best word for each space. The need for a surgical operation,【C1】______an emergency

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问题     Read the following passage and choose the best word for each space.
    The need for a surgical operation,【C1】______an emergency operation, almost always comes as a【C2】______shock to the patient and his family. Despite modern advances, most people still have an【C3】______fear of hospitals. Patients do not often believe they really need surgery — cutting into a part of the body as【C4】______to treatment with drugs.
    In the early years of this century there was【C5】______specialization in surgery. A good surgeon was capable【C6】______almost every operation that had been【C7】______up to that time. Today the【C8】______is different. Operations are now being carried【C9】______that were not even dreamed of fifty years ago. The heart can be safely opened. A lung, the whole stomach, or even part of the brain can be removed and still permit the patient to live a【C10】______and satisfactory life.
    The【C11】______of surgery has increase【C12】______in this century. Its safety has increase, too. Deaths from most operations are about 20% of what they were in 1910 and surgery has been extended【C13】______many directions. The hospital stay after surgery has been【C14】______to as little as a week for most major operations. Most patients are out of bed on the day after their operation【C15】______may be back at work in two or three weeks.
    Many developments in modern surgery are almost【C16】______. One of the most revolutionary areas of modern surgery is【C17】______of organ transplants. It has been discovered that with the use of X-rays and special drugs, it is possible to transplant【C18】______from one person to another which will【C19】______for periods of a year or more. Heart and lung transplants have been reasonably successful in animals,【C20】______rejection problems in humans have yet to be solved.
【C20】
选项 A、and
B、though
C、therefore
D、because
答案B
解析 考点：逻辑关系。分析：本句意为：“心脏和肺的移植已经在动物身上相当地成功，______在人类身上被移植器官的排斥问题还有待进一步解决。”根据上下文，空格前后应该为让步关系，故4个选项中只有选项B正确。
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