【单选题】听力原文:W: Did you say yon' re going to take a vacation next week? M: Yes. I' m going to San Francisco for a couple of weeks. W: I envy you. I wish I could get away for a while. What can you infer from t...
【单选题】听力原文:W: Let's look at the survey on consumer confidence we conducted last week. How reliable are these figures? M: They have a 5% margin of error. Q: What are the speakers talking about? (17)