They were__________ at the_____ child for he was so addicted to the Interne that he stayed up till

12 0' clock every night. [      ]

A. disappointed; disappointed  

B. disappointing; disappointing  

C. disappointed; disappointing  

D. disappointing; disappointed

诊断冠心病最常用的非创伤性检查方法是：（）

A.休息时心电图

B.24h动态心电图

C.心电图运动负荷试验

D.超声心动图

E.心脏CT检查