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2007年11月初,湖北省高中数学青年教师优质课比赛在荆州举行,笔者认真观摩了所有选手的作品,收获颇多,对其中一节获一等奖的"随机事件及
At the beginning of November 2007, the high school mathematics teacher quality contest in Hubei Province was held in Jingzhou. The author carefully observed the works of all contestants and gained a lot of rewards.