下列关于结核病的基本病理改变，不正确的是
A．急性炎症性血管病变B．渗出增殖病变C．粟粒结节D．干酪液化空洞E．钙化结节
参考答案：A
Mrs.Smith finds it hard to clear up the mess, as her children are always ________ whenever she tries to.
A．in the way
B．on watch
C．in sight
D．on the line
哪些情况下不宜行胃插管术？
