阅读下面短文，掌握大意，然后从A、B、C、D四个选项中选出最佳选项。 Life

     Life in the 2020s will be very different from life today. Between then and now many changes, will take
place. So   1   will the change be?
     The population is growing   2  . There will be many people in the world and   3   of them will live longer
than people live now.
     The computer will be even smaller and   4   and there will be at least(至少) one in every home.And   5   study will be one of the important subjects in school then.
     People will work fewer hours than they   6   now and they will have more   7   time for sports, watching TV and traveling. Traveling will be even easier and cheaper. And many more people will go to other
countries for   8  .
     There   9   changes in our food, too. More land(土地) will be done for building new towns and houses
for all the people. Then there will be less room(空间)   10   cows and sheep, so meat will be more
expensive. Maybe no one will eat it every day. Instead they eat more fruits and   11  . Maybe people will
be   12  .
        13   in the future will be different, too. Dangerous and   14 work will be done(被做) by
robots(机器人). Because of this, many people will not have any work to do. This will be a   15   .