In preparation for that Eco-Challenge in Australia, I tried to approach my training in a methodical (系统的) way. But my approach consisted of simply trying to run, bike and canoe as much and as hard as I could. I was also working at the same time. Actually, I was training a couple of hours a day during the week to get fit and at weekends training with the team for perhaps four hours. That was how much I had prepared.

　　So, we went to Australia and entered the race. We didn't plan a strategy at all, but just ran as fast as possible from the start. It was a furious (紧张的) 36 hours. We arrived at a few of the check points in first place and were among the top five. But I knew we didn't belong there.

　　To cut a long story short, two of my teammates decided not to continue the race after just a day and a half. One was just too tired to carry on. Another had severe problems with his feet. The other two of us, feeling fresh still, had to drop out with the rest of our team. Four days later, watching the winners cross the finishing line was bittersweet.

24. When the author took part in the 24-hour Eco-Challenge qualifier, he felt very _____.

A. sorry

B. proud

C. nervous

D. relaxed

25. In preparation for that Eco-Challenge in Australia, the author _____.

A. made a detailed plan with his team

B. failed to complete his training as planned