法洛四联症患儿手术治疗年龄一般应选在()。
A.1岁以内
B.1~2岁
C.2~3岁
D.4~5岁
E.5~6岁
参考答案:C
解析:[知识点] 先天性心脏病的预防及治疗原则
The poor little girl was _________young to know ______________ when her parents suddenly died in an accident.
A.so; what to do
B.too; what to do
C.so; how to do
D.too; how to do
下列哪项检查对食管异物的确诊最重要?()
A.误吞异物病史
B.间接喉镜检查
C.纤维喉镜检查
D.食管镜检查
E.X线摄片