先说一下作文吧： AI: All groups and organizations should function as teams in which everyone makes decisions and shares responsibilities and duties. Giving one person central authority and responsibility for a project or task is not an effective way to get work done. AA: Cellophone公司的shareholder annual report说，因为做手机需要很多的expensive metals，而这些metals的价格上下浮动的很厉害，公司为了save money and continue high profit，应该买大量的metal存起来。