对涵闸渗水险情的抢护原则是（），还可采用中堵截渗法。
A.黏土前戗
B.临截背导
C.防水布前戗
D.反滤铺盖
参考答案：B
Every morning, Jack goes to school _______ his dog. [ ]
A. of
B. to
C. with
D. about
单个军人在距离受礼者6~8步处，行举手礼或注目礼。
