Life in the 22^nd century will be different from that in the 21^st century because many changes will happen in the new century. 1_____ what will the changes be?
First, the population is growing very fast. There 2      more and more people in the world and most of them will live longer than before. Computers will be 3     smaller and more useful, and there will be 4     one in every home. And 5      studies will be one of the most important subjects in schools.
Second, people will work 6      hours than they are doing in the 21^st century. They’ll have more free time for sports, watching TV and7    . Traveling will also be cheaper and easier. And more people will go to8      countries for holidays.
Third, there will be changes in our food, too. People will use more land to 9      new towns and houses. Then there will be less room for cows and sheep, so 10       will be more expensive. Maybe no one eat it everyday; 11     , they will eat more vegetables and fruit. Maybe people will be 12     .
Last, work in the future will be13      , too. Robots will do the 14     and hard work. Because of this, many people won’t have 15     work to do. This will be a problem.

A kind of little cars may some day take the place of today’s cars. If everyone drives such cars in the future，there will be less pollution from the cars. There will also be more space for parking cars in cities，and the streets will be less crowded. Three such cars can park in the space now needed for one car of the usual size.
The little cars will cost much less to own and to drive. Driving will be safer，too，as these little cars can go only 65 kilometers an hour. The cars of the future will be fine for getting around a city，but they will not be useful for long trips. Little cars will go 450 kilometers before needing to stop for more gas(汽油).
If big cars are still used along with the small ones，two sets of roads will be needed in the future. Some roads will be used for the big，quick cars and other roads will be needed for the slower，smaller ones.
【小题1】There is much pollution from the cars today because________.

Life in the 22nd century will be different from life in the 21th century，because many changes will take place in the new century. But what will the changes be?

The population(人口) is   1  fast．There will be more and more people in the world and most of them will live   2  than before．  3  will be much smaller and more useful，and there will be at least one in every home．And computer studies will be one of the important subjects at   4 ．

People will work fewer hours than they did in the 21th century，and they will have more free time for sports，  5  TV and traveling．Traveling will be more  6  . And many more people will go to other countries for holidays．

More land will be used for building new towns and houses．Then there will be less room for cows and sheep，so    7   will be more expensive．Maybe no one will eat it every day，  8 they eat more vegetables and fruit．Maybe people will be healthier．

Work in the future will be    9 ，too．Dangerous and hard work will be done by robots(机器人)．  10  of this，many people will not have enough work to do．This will be a problem．