听力原文：W: You don' t look smart this morning. I can see you' re not happy.
M: I had never expected this would have happened to me. We had a power failure at home last night.
W: How come？ Did anyone in the family do anything wrong？
M: You've guessed it. It was all my father's fault.
W: What did he do？
M: I was just watching a wonderful football feature program on TV when the lights suddenly went out.
W: Why was that？
M: You see, we' d just had our dinner. My mother was washing my jeans in the washing machine. And the air-conditioners were on in both rooms. I was in my room watching TV.
W: What was your father doing then？
M: He wanted to warm his tea in the microwave oven. He plugged it in and the fuse broke. And everything stopped all of a sudden.
W: Your next-door neighbor is an electrician, isn' t he？
M: Yes. Luckily, he happened to be at home. He came and fixed it up. But it was hag an hour later. I had already missed a lot.
W: It was an annoying experience for a sports fan like you. But don' t miss the basketball final this evening. Make sure there is no power failure tonight.
(20)

A. He failed in a power test yesterday.
B. He never expected himself to be happy.
C. It was because of his father' s foot.
D. He missed about 30 minutes of a program.