A：
B：
C：
D：
下图为某山地等高线、等温线、雪线示意图。读图完成下列问题。
A: —I'm ____ (sad; excited) because we're going to climb the mountain.
B: —That's ____(grey; great).
A: —I'm ____(scared; tired).
B: —Why are you scared?
A: —Because she's going into the cave. I heard a____ (toys; noise).
B: —Be careful!
