题目

甲、乙、丙三人进行百米赛跑：甲的速度是7米/秒，乙的速度是23.4千米/时，丙的速度是420米/秒，比赛结果是_______先到达终点；_______跑得最慢。 答案：甲；乙The time the old man devotes ____ English at home is very important to him. A. to studying B. to study C. of being studied D. of studying