单项选择题
A．some examples of shoot in US schools B．the American’s feeling C．some famous schools D．that some teachers were killed by students
A．it is true to say artists fail in their work B．it is untrue to say artists fail in their work C．it is true to say some artists fail in their work D．it is true to say only painters fail in their work
A．is most important B．is included C．is considered D．is numbered