听力原文：W: A great day, isn't it? M: I guess so. But I feel awful because I watched TV until after midnight last night. W: After midnight! Did you watch so late because you were bored? I usually watch TV only ff I have nothing better to do. M: Bored? No, I was upset because I left my meal tickets in the cafeteria. W: That worth more than fifty dollars. So, did watching TV make you feel better? M: A bit. But after I turned the TV off, I just felt disgusted with myself for wasting so much time. W: I've had that feeling before. M: I had intended to watch just one program, but somehow I couldn't make myself switch off the TV. W: Actually, I've read that there's a scientific explanation for that. It seems that there's a part of the brain that processes complex information, but that part becomes less active while watching TV. M: That's certainly how I felt last night--like my brain wasn't very active. W: That's not the worst of it. If you watch TV a lot, or for a long time, that part of the brain--the part that processes complex information, shows lowered activity and you become more and more passive. M: That's incredible. W: Next time you feel upset, you should go swimming. That's what I do, and it always makes me feel better. M: I suppose. Now I've got to go to the cafeteria and get some more meal tickets. (23)