题目内容：
完成选项I lost both legs in a 2003 attack in Iraq. After the rocket 36 , I was lying in the back of the truck ,and I could see that my legs were messed up--my trousers were ripped ,and I was bleeding...
I 37 getting a double amputation(截肢)above the knees, then being flown to Walter Reed hospital in Bethesda, Maryland. 38 I got hit ,I'd been a good 39, but now I didn't know if I'd walk again. After months of physical therapy ,I should have been using prostheses(假肢). But there are challenges, 40 balance, and fit, for people who have lost as much of both legs as I have ,and I couldn't seem to41how.
When I'd been in the hospital for five months, the Disabled American Veterans held a winter sports clinic in Aspen, Colorado, and I attended with my wife. At the clinic, they 42 me how to use a monoski.
Skiing was the first thing that gave me my legs 43 . I could use the same ski lift as every-body else. The only 44 on which slope I went down was my skill level. I didn't develop much 45 that weekend ,but I had a blast.
When I went home four months later, I 46 physical therapy. In the summer of 2004, I 47 a handcycle for about 40 miles in a fund-raiser for the Wounded Warrior Project. I enjoyed it so much that the next year. I cycled across the country with a couple of other guys. It took us two months. Seeing the U. S. A. one town at a time was very 48 .
That winter, I trained in a monoski camp for people with disabilities. But I still wasn't walking ,and I 49 there was something about me that was causing the problems. Then I found a prosthetics company that had worked with a lot of bilateral above-the-knee amputees. I got my new legs that July 2006--complete with micro-processers that 50 for activity level sad terrain--and I haven't used a wheelchair since.
The prostheses 51 me to branch out into other sports. In 2007, I won silver medals in the100-and 200-meter dashes at the Endeavor Games. I've been 52 a relay team in a couple of triathlons and played in a golf tournament. But my main sport is skiing. I've spent the past three winters in Aspen, 53 in Alpine events with financial 54 from the Veterans Paralympic Performance Program.
When I'm out on the slopes, it feels good to know that I ski better than most people who have their legs. Being disabled is a 55 term--you can still do plenty with what the good Lord has given you.
A．struck
B．hit
C．sounded
D．launched
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