C) Michelangelo worked in Rome and Florence. In Rome he was commissioned (委托制作)to carve a Pieta (圣母哀恸)。 This is a marble (大理石)statue showing the Virgin Mary supporting the dead Christ on her knees. The finished work,known as the"Madonna della Pieta",made him famous. And in Florence, Michelangelo spent two years working on a huge block of marble.From it he carved"David",one of the world's finest and best-known sculpture.