喘是多种急慢性疾病的一个症状以
A．独立的慢性传染性疾病B．多种慢性疾病虚损证候的总称C．五脏并重D．传染性E．肺
参考答案：A
It's four o'clock in the afternoon. The boys _______ in the pool.[ ]
A. is swiming
B. are swimming
C. are swiming
为明确诊断应做哪项检查
A．心脏ECT
B．心脏磁共振
C．冠状动脉造影
D．心肌活检
E．食管调搏
