How 3D printing works shows that______. A.small items can be made in the corner of an office B.it is currently the preserve of hobbyists in academic and industrial niche C.additive manufacturing is too complicated to be popularized at present D.the blue print of 3D printing has to be designed three-dimensionally
A. A.small B.it C.additive D.the
【参考答案】
A 属推断题。选项B无中生有,从文中无法推知,故选项B错误。选项C不合文意,虽然3D印刷的过程十分复杂,但是文章第三段表示随着技术的发展,3D印刷正在蓬勃发展,故选项C错误。选项D犯了强加联系的错误,原文并没有强调3D印刷的蓝图必须设计成3D的,故选项D错误。从3D印刷的工作原理和过程来看,......