【简答题】Introduce your car. 汽车介绍
【判断题】请按票面标明的日期、车次凭票乘车,并在规定时间内至到站。 Your ticket is only valid for travel on a specified train and date, as stated on your ticket.
【简答题】本体坐标系纵轴xb与水平面xgyg之间的角度为()。
【单选题】骑车前必须检查一下你自行车的刹车。 You must ____ your bicycle brakes before you ride.