第30题: [单项选择]The ill luck associated with 13 is supposed to have its origin in ______. A. legend B. religion C. popular belief D. certain customs 参考答案:B 答案解析:要点定位题。根据本文倒数第三段中“the significance given to the number by the early Christians”可知与答案B religion有关。
第31题: [单项选择]半声咳嗽者,多为()。 A. 肺经虚寒 B. 肺经实热 C. 劳伤久病 D. 外感肺咳 E. 肺气滞塞 参考答案:E