Joe: We haven't got together for a longtime. How about lunch next week? Nancy: I'm pretty tied up all next week. How about we plan on two weeks from today? Joe: OK. Wednesday in two weeks.
【简答题】If Madame Curie had not happened to leave a photographic plate in a drawer with a chunk of pitchblende, the world today would not know about radium. (Para.108)
【单选题】“If Madame Curie had not happened to leave a photographic plate in a drawer with a chunk of pitchblende, the world today would not know about radium." The statement commits the fallacy of: