地图不仅是学习地理的工具，而且我们生活中也经常用到地图。结合所学知识完成下列各题。

实验分析题：

根据“骨的成分与骨的特性之间的关系”的实验回答下列问题．

A: How was your day off, Tina?
B: Oh, it was awful.
A: Really?  1
B: Well, we wanted to go camping, but the weather was terrible.  2
A: Oh, that's too bad. Then what did you do? Did you watch TV at home?
B: No.  3   . It was boring.
A: Sounds terrible, Tina.
B:   4
A: I think I had great fun. I went to the museum and met a famous actor.  5      And I got his autograph.
B: That sounds wonderful.

表示南纬的符号是（     ）

某商场二楼摆出一台游戏装置如图所示，小球从最上方入口处投入，每次遇到黑色障碍物，等可能地向左或向右边落下．