题目内容
阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
While I went sightseeing in London, I visited the London Underground. Like most tourists, I was very interested in it as it is the 1. (old)system in the world. It is also very complex. I was told that the first part of the underground system opened in 1863 and 2. took people from the boundary of London to the city center. The underground passages were very narrow 3. (compare) to the last line that was constructed in 1977. when 4. (carriage) first ran in these passages, there was lots 5. smoke and noise. I think it must have been horrible and damp down there! Another problem was that there were a dozen different lines, 6. were not linked. This 7.(make) the system not user-friendly, but now the different lines have been joined. The union of the different lines makes traveling on the London Underground much more 8. (convenience). I bought a ticket at a discount and rode the underground three times. It was good for me 9. (have)the experience. Another interesting thing was that the passage were used for all sorts of things during World War II such as bomb shelters and an anti-aircraft centre. It’s 10. (true) amazing!