题目

听材料，回答问题。 （1） What's the date today? A . August 11. B . August 18. C . August 25. （2） What do we know about the man? A . He often goes abroad. B . He will go to Australia alone. C . He will go to Australia with his uncle. （3） Why doesn't the woman go to study in Australia? A . Because she doesn't want to study abroad. B . Because she doesn't want to leave her parents. C . Because her parents cannot afford the expenses. （4） What does the woman ask the man to do? A . To tell her about his life in Australia. B . To ca夏天打开冰箱冷冻室的门，会看到门口周围冒“白气”．请你解释这“白气”的成因．