（）年，捷克剧作家Capek在他的《罗萨姆万能机器人公司》剧本中，第一次用了机器人RoBot这个词

In paragraph 1 the author introduces his topic by relating______. A: the idea of humanoid robots B: Karl Capek's creation of robots C: Hollywood's production of robot films D: the origin of and popular films about robots