In Japan’s capital city of Tokyo, earthquake danger limits（限制）the height of buildings. The city has spread out so far and the traffic has become so heavy that it is very difficult to go from one place to another. The price of the land, too, has skyrocketed. All these explains why a group of Japanese land developers came to the conclusion（结论）that there was nowhere to go but down. So far they have dug out space underground for fifteen shopping centres. What are some of the advantages（优势）of shopping and eating underground? Clean air is one of them. The city of Tokyo has one of the most serious smog problems in the world. Another advantage is that you escape the ever-present threat（威胁）of traffic accidents on the city’s busy streets. Still another is the convenience（便利）of getting around: you are usually right next to, or even in, a subway station. And you can even spend the night underground if you like. The Kibosh station, for example, in downtown Tokyo, has a hotel with a bar, restaurant, and barbershop. 小题1:The reason why buildings can not be very high in Tokyo is ____. A．that the information about high buildings is limited in Tokyo B．that the workers haven’t mastered enough modern science and technology C．the earthquake D．the heavy traffic 小题2:What’s the meaning of “skyrocket”? It means “____”. A．go up sharply B．be as high as that of a rocket C．fall rapidly D．be as low as that of a rocket 小题3:So far how many shopping centers underground have there been? A．15 B．50 C．More than 15 D．More than 50 小题4:What are the advantages of shopping and eating underground A．Less air pollution, the convenience of shopping. B．Less air pollution, the convenience of shopping, and less traffic accidents. C．Clean air and the convenience of getting around. D．Clean air, less accidents’ threat, and the convenience of getting around. 小题5:The passage mainly tells us______. A．the capital of Japan B．the land and its limits C．the use of space underground in Tokyo D．how to make full use of the land