The Chinese have used a method called acupuncture (针灸) to 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 (针灸) to perform operations for about 4,000 years without putting the patient to sleep. This involves placing 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 put in 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, 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、the person performing the acupuncture knows a lot about the making of needles
B、an operation now needs fewer needles than in the past
C、acupuncture has existed in China for as long as 2,000 years
D、few patients prefer acupuncture to chemicals

答案B

解析 细节题。A项中“the making of needles”文中没有提及。根据第二段“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 or4 needles.”可知B项正确。根据第一段第一句,可知针灸存在大约4 000年了,所以C项说法错误。根据最后一段最后一句可知,超过一半的人都会选择针灸,所以D项说法有误。故选B。
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