--- Could you tell me __________?    

--- Certainly. In half an hour.

A．when will the train to Beijing leave

B．when the train to Beijing would leave

C．when the train to Beijing left

D．when the train to Beijing will leave

李女士，患糖尿病3年，近日出现糖尿病酮症酸中毒，其呼吸特点为

A．深度呼吸
B．呼吸音响异常
C．浮浅性呼吸
D．呼吸浅慢
E．叹息样呼吸