请在图中虚线方框内画出一个适当的球面镜，并完成光路。
凹面镜；凸面镜。
When he woke up,he found himself _________in bed and ________by some children.
A．laying;surrounded
B．laid;surrounding
C．lying;surrounded
D．lied;surrounded
一般单股人流通行的最小宽度为（）mm。
