2156The author‘s main purpose is to 查看材料A.describe the 4226

The author‘s main purpose is to 查看材料 A.describe the life of Hans Moravec B.support the view that robots will play a major role in our life C.make fun of the views of Hans Moravec D.get people prepared for the threat of future robots 请帮忙给出正确答案和分析，谢谢！