【单选题】A person who talks to ______ is not necessarily mad.
【单选题】The person who talks _____ often the one who does ________.
【多选题】马克思和思格斯认为在共产主义社会将要消失的“三大差别”有 ()。
【单选题】( )为了防止出现低质量产品而发生的成本。
【简答题】A.A person who spends all day working in a laboratory. B.A person who doesn't talk about anything but science. C.A person who doesn't play s well and isn't attractive to the opposite . D.A pers...
【单选题】( )是指为了防止出现低质量产品而发生的成本,以及由于出现了低质量产品而导致的成本
【多选题】马克思和思格斯认为在共产主义社会将要消失的“三大差别”有( )