A. By making it work in such environments as deserts, oceans or space. B. By working hard for 10 or 20 years. C. By either properly programming it or changing its structure. D. By reproducing it. 参考答案:C 答案解析:[解析] 依据文章第一段最后一句It may then take us a long time to render it intelligent by loading in the right sof