单项选择题
A．their brains could not function efficiently any more B．the full development of both sides of their brain was achieved C．their bodies stopped working D．they were very old
A．with age B．with use C．with memory D．with development
A．processes and puts into order the information which comes in B．is usually better developed than the left side in western society C．is usually not as well developed as the left side in western D．is usually developed as well as the left side in western society