单项选择题 W: You look great since you’ye been taking the Yoga exercise.M: Thanks ! I’e never felt better in my life.Q: What does the man imply?（）

单项选择题 M: Are you going home for summer holidays?W: I’ve agreed to stay on here as a research assistant.Q: What can be inferred about the woman?（）

单项选择题 A．高碳酸血症 B．低氧血症C．两者均有 D．两者均无冠心病，急性肺水肿A． B． C． D．