那么，今天为什么不乘坐世界上最古老的地铁观光一番呢？

　　5．What was the London Underground like in 1863?

　　1863年伦敦的地铁状况怎么样？

　　　阅读P50－P51课文，并从四个选项中选择最佳答案

　　1．Why did most trains to London only go to the outer city limits?

　　A．Because building railway tracks into the city would have needed much money.

　　B．Because building railway tracks into the city would have damaged many old buildings.

　　C．Because the technology was not so advanced then.

　　D．Because the London government didn't approve the plan.

　　2．If you travelled on the underground in 1884, you would____________.

　　A．look out of the window of your carriage to enjoy the scenery

　　B．see the smoke caused by the steam engines

　　C．suffer from noise

　　D．go to the south in London

　　3．Why was travelling on the underground lines inconvenient in the 1880s?

　　A．Because the speed of the underground was slow.

　　B．Because the price of the tickets was very high.

　　C．Because you should queue up.

　　D．Because each line was separately owned and many were very far from each other.

　　4．The underground system was functioned as the following except________.

　　A．bomb shelters

　　B．an underground airplane factory

　　C．field hospital

　　D．meeting rooms

5．What is the main idea of the passage?