注意：此页面搜索的是所有试题
This passage mainly tells the reader how ___.( )(本题2.5分)
A、 the London Underground works
B、 a passenger travels on a subway train
C、 a passenger buys a subway ticket
D、 the London Underground develops
A、 the London Underground works
B、 a passenger travels on a subway train
C、 a passenger buys a subway ticket
D、 the London Underground develops
参考答案