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    A company says it has completed the first 3D-printed home recently. The home was shown to reporters and visitors at a music festival.

    The building company has developed large 3D- printers that build homes with mortar, a hard and strong material. It uses robotics, computer programs and advanced materials to make houses.

    Jason Ballard is the company's chief engineer. "So I'm standing in front of the first 3D-printed home in America. This house was actually printed in high winds, blowing dust and rain." It is important for the printing programmes to operate in bad weather conditions, such as weather disasters. The goal is to print homes in developing countries. So the printer has to be light enough to move from one property to the next.

    Ballard imagines that someday, many 3D-printers will operate around the world to make homes. "It's actually a lot more simple to build a printer than it is to build a house," he said. "We ran this printer at about a quarter speed to print this house, and completed it in about 48 hours of print time."

    The company developed this technology not to make money but to help provide a quick, cheap housing solution for the millions of people who need it most. There are about a billion people that don't have one of life's most basic human needs, and that's safe shelter.

    Ballard says his company already works on housing needs with poor families in different areas. But he says that to really make a difference, the program will need to be greatly improved. He added that since the 3D-printing process is so much faster than traditional homebuilding, a whole community could be built in just a few months. He believes over time, people can get the new home below $4,000 with the help of 3D-printers.

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阅读有关诸葛亮的两则文言文,完成后面的题目。
       【甲】臣本布衣,躬耕于南阳,苟全性命于乱世,不求闻达于诸侯。先帝不以臣卑鄙,猥自枉屈,三顾臣于草庐之中,咨臣以当世之事,由是感激,遂许先帝以驱驰。后值倾覆,受任于败军之际,奉命于危难之间,尔来二十有一年矣。
先帝知臣谨慎,故临崩寄臣以大事也。受命以来,夙夜忧叹,恐托付不效,以伤先帝之明,故五月渡泸,深入不毛……      (节选自诸葛亮《出师表》)
      【乙】章武三年春,先主于永安①病笃,召亮于成都。谓亮曰:“君才十倍曹丕②,必能安国,终定大事③。若嗣子④可辅,辅之;如其不才,君可自取⑤。”亮涕泣曰:“臣敢⑥竭股肱⑦之力,效⑧忠贞之节,继之以死⑨!”先主又为诏敕后主曰:“汝与丞相从事,事⑩之如父。”               

                                                                                                                                                                             (节选自陈寿    《三国志•诸葛亮传》)
         注释:①【永安】即白帝城。②【曹丕】曹操之子。③【大事】此指灭魏灭吴,统一中国。④【嗣子】此子刘禅。嗣:继承。⑤【自取】自己取而代之。⑥【敢】谦词。有冒昧的意思。⑦【股肱ɡōnɡ】比喻辅佐之臣。⑧【效】献出,呈献。⑨【继之以死】即一直到死。⑩【事】侍奉。