A. It is not an obvious subject for a poem B. It is less interesting than his other work C. It overstretched his imagination D. It was particularly difficult to write 参考答案:A
第18题: [单项选择]患儿,4岁。胸骨左缘3~4肋间Ⅲ级收缩期杂音,肺动脉第二音亢进,胸片示左、右心室扩大。应诊断为() A. 室间隔缺损 B. 房间隔缺损 C. 动脉导管未闭 D. 肺动脉狭窄 E. 法洛四联症 参考答案:A 答案解析:室间隔缺损,胸骨左缘3~4肋间Ⅱ~Ⅴ级全收缩期杂音。左、有心室大,心房可大。故选A。房间隔缺损,肺动脉第二音增强或亢进,胸骨左缘2~3肋间Ⅱ~Ⅲ级收缩期杂音,右心房、右心室大。动脉导管未闭,胸骨左缘第