【简答题】阅读理解。 We live in different places. For example, some people live in the mountains; some people live on plains; some people live near water. Mary lives near the sea. The sea is blue. She likes to play ...
【单选题】听力原文:Excuse me, I've been using this old book for a research project and I noticed that a lot of pages are turning brown and becoming brittle. Yes, unfortunately, that's a common problem with books ma...