请回答下列问题：
A: What are you doing?(你们在做什么？)
B: We is playing. ____
A: You's big. ____
B: Now we'are small. ____
A: Are you happy?
B: No, we are. ____
A:Are you celd? ____
B: Yes, we are hot.
根据下图判断，下列描述最符合澳大利亚地势特征的是（ ）
