题目

完形填空 Life in 30 years will be1because many changes will take place, but what will the changes be? The population is growing fast. There will be2people in the world and most of them will live longer than before. Computers will be3 smaller and more useful, and there will be at least one in every home. And computer studies will be one of the important 4in school. People will work fewer hours than they are doing now, and they will have more free time for sports, watching TV and traveling. Traveling will be much cheaper and5. And many more people will go to other countries6holidays. There w已知α为第三象限角，则所在的象限是（ ）A．第一或第二象限B．第二或第三象限C．第一或第三象限D．第二或第四象限