after 20 years, what human life will be like ? many of us are very curious about it . in twenty years later, in fact, drinking water is purified water but water from wells. and people's clothes are not only cold-proof but also resists acid rain, sand storm as well as radiation.what is more, transportation vehicle is also of variety and environment-friendly. in a word, the life at that time is very happy.
愿对君有所帮助, goooooooooooooooooooood luck to you
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