用方框中所給的單詞的適當(dāng)形式填空，使短文正確、通順。每詞限用一次。
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Many large cities have a subway system. The subway is called tube in London. In San Francisco, it is called BART (Bay Area Rapid Transit). Some subway systems, like Chicago’s, are quite 小題1:____________. It opened in 1897. Others are more recent (近代的). For example, Mexico City’s subway 小題2:____________ in 1969.
Most subways are very modern and clean, but sometimes they get very小題3:____________. So people have to follow certain rules to make the trip more 小題4:____________. In London, when people use the tube, they must stand on the right so that people in a 小題5:____________ can walk on the left. They let passengers get off the train before others get on, and people are expected to give their 小題6:____________ to the old and disabled people.
Some subways 小題7:____________ excellent services. In most subways, there is a station about every one kilometer. Trains 小題8:____________ at a station about every two minutes. Subways carry a lot of passengers. The number of people 小題9:____________ one way each hour in London can be about 30,000. However, in some other cities it is much higher. Hong Kong’s subway小題10:____________ the record of about 80,000 passengers an hour!
