“捧着一颗心来，不带半根草去”这一名言的提出者是( )
A．陶行知 B．徐特立C．蔡元培 D．叶圣陶
参考答案：A
It rained heavily this morning, but _____ of my classmate were late for school. [ ]
A. neither
B. none
C. all
试述小儿呼吸道的解剖特点及临床意义。
