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  3. The Chinese have used a method called acupuncture to help perform operations for about 4,000 years without putting the patient t

The Chinese have used a method called acupuncture to help perform operations for about 4,000 years without putting the patient t

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问题     The Chinese have used a method called acupuncture to help perform operations for about 4,000 years without putting the patient to sleep. This involves inserting (插入)flexible needles (针)into certain parts of the body. The needles used are available in a number of stores in China and everyone may buy them.
    To learn how to use needle takes about one month of training. But to be skillful requires greater time. The person who performs the acupuncture knows how to insert the needles so the needles themselves are not painful. This person also knows where to place the needles so the patient feels no pain in the area where the operation is to be performed. The needles are not necessarily inserted near the place where the pain is to be prevented. In the past, a particular operation might require 25 or more needles placed in various parts of the body. But now this operation requires only 3 or 4 needles.
    Today the Chinese doctors are trying to learn more about acupuncture. They are trying to develop a convincing theory to explain how the needles work in preventing pain, or, why a needle in the wrist (手腕), for example, would prevent the pain in the area of the mouth.
    A patient who needs an operation is given a choice between having acupuncture or having one of the chemicals used for putting him to sleep. It has been estimated that over half of the patients choose acupuncture because there is no sickness after the operation whereas (然而，反之) the chemical may make the patient sick for a few hours or a day.
It can be learned from the passage that______.
选项 A、more patients prefer chemicals to acupuncture
B、an operation in the past needs more needles than now
C、acupuncture has existed in China for as long as 6,000 years
D、Chinese doctors have developed a convincing theory about acupuncture.
答案B
解析 根据第二段最后两句“A particular operation might require 25 or more neeclles placed in various parts of the body. But now this operation requires only 3 or 4 needles．"我们可以推断出：过去手术用针灸比现在要多，所以答案B正确，而A(更多的患者情愿选择化学药剂而不愿采用针灸进行手术)、C(针灸在中国已有6,000年历史)、D(中医已经提出了令人信服的针灸理论)三项都不符合原文事实。
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