二、完形填空(每小题1分，共10分)

It seems that the cities in the future will have to change. Because the world’s population  11  , there will be  12   people in the cities tomorrow.

It may be  13  for any family to live in a house with land around it, There  14   enough space for them.  15   to solve this problem may be the skyscraper (摩天城). The highest building in the world today is in Taipei. It’s about 509 metres high. The skyscraper cities in the future will be many times   16   .

In a skyscraper city about 250,000 people will live. Nearly a million people can  17  in four of these great buildings. Each skyscraper city will have four towns in it and each town will have ten villages. They will live, work and  18   their free time in them. They won’t need to leave the city  19  they want to.    They will be able to move about in the city transport controlled  20  computers. Let’s imagine how the life will be then!

(   )11. A. has grown        B. is growing       C. are growing       D. have grown

(   )12. A. many            B. much           C. more             D. larger

(   )13. A. impossible      B. possible       C. important         D. necessary

(   )14. A. aren’t          B. won’t be       C. won’t have       D. haven’t

(   )15. A. A way         B. A road         C. An answer        D. An idea

(   )16. A. lower          B. shorter         C. taller            D. higher

(   )17. A. live            B. study          C. work            D. be

(   )18. A. spend          B. cost           C. pay              D. take

(   )19. A. until           B. when          C. while            D. unless

(   )20. A. by           B. at              C. with            D. in