第16题: [单项选择]有关心绞痛的药物治疗,下列各项中最正确的是 A. β受体阻滞药与硝酸酯有协同作用,但两者抗心绞痛的机制不同,所以使用时不必减量 B. 长期服用β受体阻滞药的患者,一旦发生明显心动过缓,应立即停药 C. 在应用β受体阻滞药的患者,如发生冠状动脉痉挛,可同时应用维拉帕米(异搏定) D. 治疗变异型心绞痛以钙拮抗剂的疗效最好,如需停药时应逐渐减量,以免发生冠状动脉痉挛 E. 双嘧达莫是一种强冠状动脉扩张药,心绞痛发作时,只要用足够剂量常可改善心肌血供,而缓解心绞痛 参考答案:D
第18题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. She thanked the man for buying her the skirt. B. Her boyfriend presented it to her as a gift. C. She bought the skirt on her birthday. D. It was a wedding gift from her friends. 参考答案:B 答案解析:[听力原文]
M:That’s a lovely skirt you’re wearing.
W:Oh,thank you,{{U}}my boyfriend bought it for my e