Life in the future：for better or worse?
Many students are optimistic(乐观的)about the next fifty years．In fact,they think that the world will be a better place than it is now and our lives will be greatly improved．As a result,people will have a higher standard of living and live longer．
However,other students are worried about the future．They say the world will
become more crowded．Therefore,we will have even more environmental problems and
live in a world with less energy available．
But in my opinion,I think we will find ways to solve our problems and everyone will live more happily