【单选题】城市轨道交通运输组织中采用()色灯信号机表示注意并减速运行。
【判断题】在道路交通活动中,方向指示信号灯红色或黄色箭头表示仅对箭头所指向方向起红灯或黄灯作用。()
【简答题】Tim must take the ___________ and stay in bed.
【多选题】在城市轨道交通信号显示中,用绿色灯光表示按规定速度运行的信号的科学依据是( )
B.
因为绿色光的波长,仅次于红光和黄光,传播距离较远
【单选题】Tim stopped and stayed for a moment to ______ himself that he was not being followed.
【判断题】平菇菌丝体生长阶段和子实体生长阶段均不需要光。
【单选题】How long will Tim stay in London?
【简答题】A.Tim is glad that he can stay up late. B.Every child in Brown's family must help with the housework. C.Mr. and Mrs. Brown do not have to do any housework. D.The constitution was agreed to by every ch...