Question

阅读理解 　　Some building designers are thinking about building whole cities under glass domes(圆顶)in the desert．Of course, those heating and cooling systems(系统)will be necessary to control the climate in the domes．However, there will never be any rain or snow, and temperature will always be comfortable． 　　Perhaps everyone will live in high vertical(垂直)cities that are so large that they can contain all the necessities of life．Since vertical cities will use less land than horizontal(水平的)cities, and provide homes for people, they will be practical for small countries that have large population． 　　Another idea that will be helpful to small countries and island countries is the floating city．Monaco has already built homes, stores, and offices on the water of the Mediterranean Sea．And a Japanese designer has suggested a plan for constructing buildings on bridges over Tokyo Bay． 　　There are some people who think we will go back to living in caves．But the caves of future will be very different from the caves of the Stone Age．Computers will control light and climate．Farms and parks will be on the land over the cave city．When people want to go to the country or a park, a short ride in a lift will take them there． (1) The text is mainly about ________． [　　] A． future life B． future cities C． building designers D． how to save land (2) What kind of city covers less land? [　　] A． The city under glass dome in the desert． B． The vertical city． C． The floating city． D． The horizontal city． (3) People living in ________ can enjoy natural climate． [　　] A． the cities under glass domes B． either vertical cities or cave cities C． both vertical cities and floating cities D． all the above cities except the underground cities

Answer 1

答案：1．B;2．B;3．C;
解析：

(1)	整篇短文都是围绕着设计者对将来居住城市的样子展开的，因此答案为B项。
(2)	由短文第二段第二句话可以知道这种垂直城市比水平城市占地少，因此可以推断出正确答案为B项。
(3)	由第一段和第四段可知，在glass domes和caves里，气候都是由机器控制的，因此可以把A、B和D项排除。