【单选题】听力原文:M: I've been running a mile every afternoon for the past month. But I still haven't been able to lose more than a pound or two. I wonder if it is worth it. W: It always seems hard when you are ju...
【单选题】听力原文:M: I've been running a mile every afternoon for the past month. But I still haven't been able to lose more than a pound or two. I wonder if it is worth it. W: It always seems hard when you are ju...