英文作文 健康食物，怎么写？

life in the 2020s 英文作文

Futurist Ray Kurzweil, in his recent book, Fantastic Voyage, dubs the 2020s as “the golden age of nanotech”。 Nanotech first gained worldwide attention in 1986 with Eric Drexler’s book, Engines of Creation, which detailed amazing wonders to come that would change humanity beyond our wildest dream...全部

  Futurist Ray Kurzweil, in his recent book, Fantastic Voyage, dubs the 2020s as “the golden age of nanotech”。
   Nanotech first gained worldwide attention in 1986 with Eric Drexler’s book, Engines of Creation, which detailed amazing wonders to come that would change humanity beyond our wildest dreams。
  At the heart of Drexler’s vision is a small machine called an assembler, which, when loaded with nanobots, can build things one atom at a time。
   With instructions from the Internet, assemblers can extract atoms from raw materials such as dirt, air, and seawater and turn them into food, clothes, and appliances; or any item desired。
   They can even build another assembler。Some companies are already creating nano-enhanced products, such as makeup, lotions, and sunscreens, which last longer and look better。
   But Drexler says by the 2020s, nanobots will do much more。 On command they can change hair and skin color, and remove wrinkles and excess fat。
   Future nanobots will give us great health in a perfect body。Already in design are nanobots that repair cells, fix damaged DNA, remove toxins, eliminate cholesterol, stop cancer, and reverse aging。
   You could even mix and match your age: distinguished hairline of a senior, sturdy frame of a thirty-year-old, lusty libido of a twenty something, and sharp eyesight of a child。
  In the entertainment world, nanobots promise full immersion of virtual reality systems。 By mid-2020s, “neuro-bots” will provide artificial environments indistinguishable from real ones。
   Enjoy a trip to Mars or a memorable romance – without leaving home。Scientists predict by the late 2020s, nanobots will enable optic nerves to receive and send information。
   We will view and understand TV without using our eyes – and transmit thoughts without using our voice。
  Nanotech also promises to eliminate world poverty and hunger。 Food shortages will disappear by simply rearranging atoms from dirt, water or air to produce potatoes。
   Grass clippings could turn into bread, and so on。But critics worry。 First, they say benefits of new technologies are never shared equitably, always leaving the poor behind。
   Proponents say that problem will quickly fade away, as usually happens in our innovative market economy。
   (Think of the notorious “digital divide” of the 1990s; thanks to the Internet, it’s now all but gone。
  )Second, nanotech will change society too fast; it will shift workers, eliminate jobs, and destroy industries。
   Could abundance created by assemblers make us excessive – or will it have a reverse effect making us less materialistic? Will life become so easy that it loses meaning, or is it in our nature to always seek new challenges? (These questions may be as groundless as the “leisure question” that social scientists worried about when they wondered what we would do with all our free time in the age of automation and computers…hello。
  )But nanotech does raise ethical issues。 How much are we willing to tinker with, and revise our bodies? Will we end up as humans or machines?Clearly the road to this “magical future” winds around unknown, even dangerous turns; but strong commerce and government support guarantees that “the golden age of nanotech” will become reality in our lifetime。
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