施工工程与社会道路或民房相邻时应（）
A.提醒施工人员注意安全
B.搭设防护棚
C.加强管理，派人监护
参考答案：B
---- _______do you have sports meetings in your school?
----Once a year.
A．How often
B．How many
C．How soon
D．How much
能反映“沙漠和荒漠化”主题的漫画是
