It seems certain that cities in the future will have to change.They cannot go on devel
oping as they are at present.Because the world's population is increasing, there will be more people in the cities of tomorrow.It may not be possible for any family to live in a house with land around it.There will not be enough space for this.An answer to this problem of space may be the skyscraper city.A plan for a city like this has been made by an engineer called Wilem Frischmann.His idea is to build great skyscrapers.Each building would be three kilometers high.In this skyscraper city about 250 000 people would live.They would work and spend their free time in it.They would not need to leave the city unless they wanted to.They would be about to move about in the city by a transport system controlled by computers.Each skyscraper city would be joined to other skyscraper cities by underground tunnels.One of the highest buildings in the world nowadays is the Empire State Building in New York.It is about 450 meters high.The skyscraper cities would be about seven times as high as it.
31.The skyscraper city means().
A.a city in the sky
B.a city made up of very tall buildmgs
C.a city made up of glass houses
D.a very tall and huge building
32.What causes Wilem Frischmann to plan his skyscraper cities？（）
A.People living in cities want to live more comfortably.
B.People in the future will want skyscraper cities.
C.Soon there will not be enough space for cities like those of today.
D.This is the modern idea of buildings.
33.About()people could live in each skyscraper city.
A.250000
B.a million
C.25000
D.450000
34.The skyscraper would be().
A.450 meters high
B.36000 meters high
C.3150 meters high
D.250 000 meters high
35.Which of the following statements is true？ ()
A.The world's population is decreasing.
B.Skyscraper cities would be joined by underground tunnels.
C.People in such cities couldn't leave.
D.Wilem's tall building would be 8 kilometers high.
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