表示山谷的是（ ）
A．a
B．b
C．c
D．d
读图可得，a是山脊，b是山谷，c是鞍部，d是山顶．
故选：B．
-- How about putting some pictures into the report?
--________ A picture is worth more than a thousand words.
A．No way.
B．Why not?
C．That’s all right.
D．It doesn’t matter.
简述急性酒精中毒的治疗措施
