滑坡防治中,下列措施中合理的是( )。
A.截断和排出所有流入滑坡范围的地表水
B.砍头压脚、刷方减重
C.置换滑动带的岩土体
D.加固滑动带的岩土体
参考答案:A,B,D
不属于上颌动脉分支的是()。
A.咽升动脉
B.下牙槽动脉
C.脑膜中动脉
D.上牙槽后动脉
E.眶下动脉
—My old friend White is going to visit me.
—We haven't seen each other _____ five years. [ ]
A. since
B. after
C. for