与原动肌功能相反的肌称（）
A.原动肌
B.拮抗肌
C.固定肌
D.协同肌
E.轮匝肌
参考答案：B
_____ Emily at her aunt's last night? [ ]
A. Is
B. Was
C. Did
气管、支气管疾病的常见症状不包括()
A．咳嗽
B．吞咽困难
C．喘鸣
D．呼吸困难
E．呕吐
