题目内容：
阅读下面短文，回答题。I used to hate being called upon in class mainly because I didn’t like attention drawn to myself. And（36）otherwise assignen（指定）a seat by the teacher, I always（37）to sit at the back of the classroom.
All this（38）after I joined a sports team. It began when a teacher suggested I try out for the basketball team. At first I thought it was a crazy（39）because I didn’t have a good sense of balance, nor did I have the（40）to keep pace with the others on the team and they would tease me. But for the teacher who kept insisting on my “（41）for it”, I wouldn’t have decided to give a try.
Getting up t he courage to go to the tryouts was only the（42）of it! When I first started（43）
the practice sessions, I didn’t even know the rules of the game, much（44 what I was doing. Sometimes I’d get（45）and take a shot at the wrong direction—which made me feel really stupid（46）, I wasn’t the only one “new” at the game, so I decided to（47）on learning the game, do my best at each prctice session, and not be too hard on myself for the things I didn’t（48）“just yet”.
I practiced and practiced. Soon I knew the（49）and the “moves”. Being part of a team was fun and moticating. Very soon the competitive（50 in me was winning over my lack of confidence. With time, I learned how to play and made friends in the（51）— friends who resp ect my efforts to work hard and be a team player. I never had so much fun!
With my（52）self-confidence comes more praise from teachers and classmates. I have gone from（“53”）in the back of the classroom and not wanting to call attention to myself,（54）
raising my hand — even when I sometimes wasn’t and not 100 percent（55）I had the right answer. Now I have more self-confidence in myself.本题选择（ ） A．as
B．until
C．unless
D．though
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