(一)2004年4月22日清晨,美国加利福尼亚州A区警署接到报警。一个自称叫乔治的男子在电话中惊恐地说,他的朋友在家中突然死亡。接到报警后,警方火速赶到案发现场。在市郊一所豪华别墅内,调查人员发现,一名身着睡衣的男子脸色惨白地蜷缩在卧室的床上。床对面的投影机屏幕中,正反? (I) In the early morning of April 22, 2004, a police station in District A of California, USA received an alarm. A man calling himself George was horrified on the phone saying his friend died suddenly at home. After receiving the alarm, the police rushed to the scene of the incident. In a luxurious villa on the outskirts of the city, the investigators found that a man dressed in pajamas curled up in the bedroom bed pale. Projector screen across the bed, positive and negative?