题型:问答题 简答题 男性,21岁。近半年来反复心悸、胸痛、劳力性呼吸困难。时有头晕或短暂神志丧失。体检发现:心脏轻度增大,心尖部有2级收缩期杂音和第四心音,胸骨左缘第3~4肋间闻及较粗糙的喷射性收缩期杂音。(以下3题共用题干)最有价值的诊断方法是( )。A.胸部X线摄片B.心电图C.超声心动图D.心脏核素检查E.冠状动脉造影 查看答案
题型:问答题 简答题 ---Most hotels are very full today. --- Don't worry! I have ______ a room already in the Changjiang Hotel.A.boughtB.bookedC.visitedD.seen 查看答案