【单选题】某人在铁道路一旁的便道上跑步,速度为每秒 5 米,一列火车从后面开来,越过他用了 10 秒。已知这列火车的车身长 300 米,这列车每秒行驶( )米?
【单选题】可用于面制食品中的酸度调节剂是_____。
【判断题】“DND" 是英语Please do not disturb"的缩写。
【简答题】第三节单句改错(共10小题;每小题1分,满分10分) 76 I don’t know the reason which he stole the money._____________ 77 The girl with which I work got married last month. _____________ 78 As a result of being overhu...