听下面一段对话,回答第14至第16题。 What is the relationship between the speakers()
A. Sister and brother.
Boss and employee.
C. Teacher and student.
听下面一段对话,回答第11至第13题。 What do we know about Simon Fox()
A. He enjoys parties.
B. He likes the woman.
C. He is Sally’s husband
52()
A. saved
B. lowered
C. directed
D. fixed
结肠特有的运动是()。
A. 咀嚼
B. 蠕动
C. 排空
D. 分节运动
E. 袋状往返运动