未知题型 预录入系统可展示的角色包括:录入人、备件人、维护人、钥匙人（）

单项选择题 3.首先提出能量量子化假定的科学家是 ( )

判断题 【判断题】So striking, so sensational, was the news that, years after the event, many people can still remember exactly where they were and what they were doing when they first heard it. The above inverted sentence can be replaced by: The news was so striking and so sensational that, years after the event, many people can still remember exactly where they were and what they were doing when they first heard it.