完形填空（共15小题；每小题1分，满分15分）
Life in the 22^nd century will be          from life in the 21th century, because many changes will take place in the new century. But what will the changes be?
The population is         fast. There will be more and more people in the world and most of them will live         than before.        will be much smaller and more useful, and there will be at least one in every home. And computer studies will be one of       subjects at       .
People will work       hours than they did in the 21th century, and they will have more free time          sports,        TV and travelling. Traveling will be more       . 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         will be more expensive. Maybe no one will eat it every day,        they eat more vegetables and fruit. Maybe people will be         than before.
Work in the future will be         , too. Dangerous and hard work will be done by robots（机器人）,        of this, many people will not have enough work to do. This will be a problem.

A．same B．the same C．different D．difference

A．making B．growing C．running D．doing

A．longest B．shorter C．faster D．taller

A．trains B．cars C．computers D．houses

A．the most important B．most important C．the more important D．more important

A．factory B．hospital C．farm D．school

A．less B．fewer C．least D．fewest

A．for B．to C．with D．at

A．watching B．seeing C．looking D．buying

A．interesting B．convenient（主便的） C．expensive D．difficult

A．fruit B．milk C．meat D．bread

A．instead B．sometimes C．still D．however

A．more healthy B．healthy C．the most healthy D．healthier

A．dangerons B．difficult C．heavy D．different

A．Because B．One C．Some D．All