单项选择题
A．Happiness means the same to everyone B．Happiness is the thing that everyone wants most of all C．Money makes one happy, so does helping others D．Both A and C
A．happiness B．the preceding sentence C．money D．such things as house, farms and cars
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