第27题: [单项选择]下列食管狭窄性病变不适合单纯利用球囊成形术治疗的有 A. 术后吻合口狭窄 B. 食管癌造成的食管狭窄和并发气管瘘 C. 贲门失弛缓症 D. 幽门良性梗阻 E. 食管炎性(包括化学性炎症)狭窄 参考答案:B 答案解析:[解析] 食管癌致食管狭窄并发气管瘘时不适合单纯利用球囊成形术治疗。
第29题: [单项选择]Passage Two Questions 29 to 31 are based on the passage you have just heard. A. Man can catch water life in rivers. B. The rivers can be used to raise plants. C. Many kinds of water sports can be held. D. People can get energy from the rivers. 参考答案:C 答案解析:[听力原文] How do the rivers bring amusement to man