单项选择题
A．with a moment of sudden realization of inspiration B．with the knowledge of what is needed C．after you have climbed some muntains D．when you have climbed some mountains
A．that B．to C．for D．of
A．he hates idle talk B．it always comes at an inopportune time C．it might carry some important message D．he doesn’t want to be impolite to any one on the telephone