在强风情况下救火，必要时应在（）方向的适当距离布置第二、第三道防线。

A、上风

B、下风

C、侧风

D、燃烧物周围

From the hill top we can see horses are ______ here and there in the pasture.

A．grazing

B．biting

C．licking

D．devouring