单项选择题
A．He has never felt good in his life.
B．The Yoga has improved his health.
C．He is unhappy about his life.
D．He is thinking of taking a Yoga exercise.
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．
单项选择题 W: How many classes do you have today?M: Just one, from three to six.Q: What does the man mean?（）