题目:
学校正在举行春季运动会,位于百米赛跑终点的计时员,听到起跑的枪声后立即开表计时,测得小明同学百米赛跑的时间是13s,那么,小明百米赛跑的真实时间应是多少?(设当时在常温下)
答案:
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A School Fashion Show Yesterday morning, our school held a fashion show. Many boys and girls went to model in the show. They wo...