3．
根据材料内容，从下面六个选项中选出能填入文中空缺处的最佳选项，使文章意思通畅、内容完整（有一项多余）。
Life in the future will be different from
life today. Between then and now many changes will happen. But what will the
changes be?
There will be many people in the world and most of them will live longer than
people live now.
And there will be at least one in every home. And computer studies will be one
of the important subjects in schools then.
And they will have more free time for sports, watching TV and traveling.
Traveling will be much cheaper and easier. And many more people will go to
other countries for holidays.
More land will be used for building new towns and houses for all the people.
Then there will be less room for cows and sheep, so meat will be more
expensive. Instead, they will
eat more fruits and vegetables. Maybe people will be healthier. Work in the
future will be different, too. Robots will do dangerous and hard work. Because
of this, many people will not have enough work to do. This will be problem.
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A. People will work fewer hours than they do now.
B. The population is growing fast.
C. People should save water because there is less water
in the future.
D. There will be changes in our food, too.
E. Maybe no one will eat it every day.
F. Computers will be much smaller and more useful.
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