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1、1231._Used to send messages.Quick, efficient and 2._.A(n) 3._ message may be sent if the user does not think about his or her message clearly.The “environment area”The waste is disposed of using the principles of 4._.All the waste is “swallowed” by a giant 5._ and then turned into several grades of
2、useful material.Nothing is wasted, and everything is 6._.4Changes in work practicesManufacturing takes place on space stations and tasks are performed by 7._ robots.The 8._ have to be trained to live and work in space settlements and 9._ the robots and the production.The goods are finally sent by industrial 10._ back to earth.567891011121314151617形象形象记忆记忆Some books are to be tasted, others to be swallowed, and some few to be chewed and digested.( (Bacon) ) ( (书籍好比食品书籍好比食品) )有些书浅尝辄止,有些书可以囫囵吞枣,有些书浅尝辄止,有些书可以囫囵吞枣,少数则须咀嚼消化。少数则须咀嚼消化。( (培根培根) )18192021222324252627282930313233