,but we are sure that it will be very different from the life today.My brother Jill White has some ideas. (2)
.People will use robots to make cars,do the housework,look after sick people and teach students.People will spend most of their time playing sports and traveling.(3)
,and they will live to be about 200 years old. Second,cars will become very small and computers will control (控制) their speed.(4)
Planes will be very popular,and most people would like to take them to travel. Third,people will be able to live in the sea,on the moon or on Mars.The earth (地球) won't be crowded (擁擠) or noisy.So there will be much space for people to plant trees.There will be less pollution,and the air will become much fresher. (5)
.If people don't save water now,there will be water wars 戰(zhàn)爭)in 50 years.
A.No one knows the answer exactly B.So people will become stronger and healthier C.So there will be fewer traffic jams on the road D.Finally,water shortage will become the most important problem E.First,people will have less work to do and the robots will do most of the work