第14题: [单项选择]What did the man do first A. He did some shopping. B. He played football. C. He posted some letters. D. He went to the office. 参考答案:C 答案解析:[听力原文] W: Where have you been since I saw you at the post office M: I went shopping and then
A. 由原子组成的物质不是固体，就是液体或气体。 B. 任何物质，不论是固体、液体或气体，都由原子组成。 C. 物质是固态，液态或气态，要看其原子构成。 D. 物质是否由原子构成，是根据它是固态、液态还是气态来判断的。 参考答案:B 答案解析:[难点分析] whether在这里不是表示“是否”，而是表示“无论”，引导状语从句。
