单项选择题A.To put the homework on Don’’s desk.B.To leave the master key for Don.C.To give Don’’s students the next assignment.D.To call Don at the end of the afternoon.
单项选择题A.It is harmful to heart surgery patients with stomach bleeding.B.It should not be taken by heart surgery patients before the operation.C.It will have considerable side effects if taken in large doses.D.It should not be given to patients immediately after the operation.