第9题: [简答题]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. 参考答案: 答案解析:他们试图发展令人信服的针灸理论,来说明银针是如何止痛,比如,为何在手腕上扎针却能制止嘴部的疼痛。