当总供给大于总需求时，会出现( )等现象。
A．市场供应紧张
B．生产能力闲置
C．失业增加
D．通货膨胀
E．通货紧缩
参考答案：B,C,E
女性，52岁，B型超声波检查发现肝占位性病变1周，查肝功能正常，下列哪项阳性最有助于诊断原发性肝癌
A．γ-GTB．AFPC．MRID．CTE．B超
Since we can't hear you at the back of the hall, you'll have to（）your voice.
A.improve
B.increase
C.raise
D.open
