【单选题】It was Sunday. The trains were crowded. A gentleman was walking along the platform【21】a place. In one of【22】he saw a vacant seat. But a small suitcase was【23】on it and a stout gentleman was sitting ne...
【单选题】下面哪幅是收藏于英国国家画廊,并作为国家画廊所销售画册封面的贝利尼作品?
【单选题】三显示自动闭塞区段,通过信号机显示黄色灯光,表示前方有( )闭塞分区空闲。
【单选题】It was Sunday. The trains were crowded. A gentleman was walking along the platform【21】a place. In one of【22】he saw a vacant seat. But a small suitcase was【23】on it and a stout gentleman was sitting ne...
【单选题】三显示自动闭塞区段通过色灯信号机显示( ),准许列车按规定速度运行,表示运行前方至少有两个闭塞分区空闲。
【单选题】Tom hurried to school only to find that there was none because it was Sunday and he _____to school.