肺的生理功能有（）
A.主一身之气
B.主宣发、肃降
C.司呼吸
D.主治节
E.外合皮毛而卫外
参考答案：A, B, C, D, E
Kate had a terrible time this summer. Not a day _____ without having some unpleasantness with her sister at home.
A．she spent
B．she had spent
C．did she spend
D．had she spent
锚杆上下间距不宜小于2m，水平间距不宜大于1.5m。
