交通工具类词汇：train, bus等 — 英语选择题
题目
Li Ming要去北京。他读到了四条线索：① It has many carriages(车厢) and runs on rails(铁轨). ② It flies in the sky. ③ It stops at bus stops and many people take it on the road. ④ It is a small bike with two wheels. 根据线索①，Li Ming乘坐的交通工具是（ ）。
A. train B. plane C. bus D. bike