宜用羚角钩藤汤治疗的心律失常证型是（）。
A.风湿热证
B.热毒犯心证
C.痰饮凌心证
D.心肝失调证
E.心胆失调证
参考答案：D
— How long has he ______ ill?
— About a week. He ______ ill five days ago. [ ]
A. fallen; was
B. been; felt
C. been; fell
D. fallen ; fell
氮气母管放水门的作用是什么？
