超声显示甲状腺与颈前肌界限不清，最常见于（）。
A.亚急性甲状腺炎
B.单纯性甲状腺肿
C.结节性甲状腺肿
D.甲状腺腺瘤
E.甲状腺癌
参考答案：A, E
普米克都宝的成分为（）。
A.沙丁胺醇
B.沐舒坦
C.异丙托溴胺
D.布地奈德
E.二丙酸倍氯米松
I called Hannah three times yesterday evening, but I couldn’t get through, her brother _______on the phone all the time.
A．was talking
B．has been talking
C．has talked
D．talked
