第15题: [单项选择]{{B}}Passage One
Questions 26 to 28 are based on the passage you have just heard.{{/B}} A. Throw himself in front of the train. B. Throw himself against the bus. C. Squeeze himself between the rails. D. Strike himself with the flowerpot. 参考答案:D 答案解析:[听力原文]
Which of the following is not the way Bill tried to kill himself
比尔企图自杀,他分别尝试了撞火车、撞汽车,结果
第23题: [单项选择]幽门螺杆菌感染引起消化性溃疡的机制与下列哪项无关 A. 抑制环氧合酶(COX) B. 分泌生长抑素的D细胞减少 C. 十二指肠碳酸氢盐分泌减少 D. 胃粘膜屏障功能受损 参考答案:A 答案解析:抑制环氧合酶(COX)是非甾体抗炎药引起消化性溃疡的主要机制(A错)。幽门螺杆菌感染的十二指肠溃疡患者胃泌素增高,胃粘膜分泌生长抑素的D细胞减少(生长抑素可抑制C细胞分泌胃泌素)。幽门螺杆菌感染可减少