冠心病诊断的"金标准"是（）
A.心肌核素显像
B.心电图运动试验
C.超声心动图
D.冠脉造影
E.心脏核磁共振成像
参考答案：D
--- Are you worried about her safety?
--- Just ________. She isn’t alone.
A．entirely
B．gradually
C．generally
D．slightly
何谓行车事故和路外伤亡事故？
