听力原文:W: Good morning. Did you go to the concert last night?
M: Yes, it was great. What about you?
W: Oh, I thought it wonderful, though I missed the first part.
M: Why, it's a pity. Next time, Jet's go together.
The conversation most probably takes place between
A.a host and a guest.
B.a doctor and a patient.
C.a hotel clerk and a guest.
D.two colleagues.
第1题
关于强心苷药理作用的描述,哪一项是错误的
A、正性肌力作用
B、负性频率作用
C、降低心肌氧耗量
D、降低窦房结自律性
E、加速房室结传导
第9题
强心苷治疗心力衰竭的主要药理作用是
A.降低心肌耗氧量
B.正性肌力作用
C.使已扩大的心室容积缩小
D.直接减慢心率
E.减慢房宣传导
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