问题补充:
at a speed over 400 kilometers per hour, the train arrived in Pudong International Airport in ten minutes.
A. Travelling
B. Travelled
C. To travel
D. Travel
答案:
(答案→)A. Travelling
B. Travelled
C. To travel
D. Travel
解析:考查非谓语动词。主语the train与travel之间是主动关系,所以用现在分词。句意:火车以每小时四百多公里的速度行驶,十分钟之后就到达了浦东国际机场。所以选A。