单项选择题
A．how cruel the king was B．how clever the minister was C．Sissa was a famous mathematician D．how the game of chess came into being
A．a robber who robs drivers B．a policeman who had worked in prison C．a prisoner who had escaped from prison D．a stranger with ￡ 100.00 in his pocket
A．19 squares B．one third of the squares C．the first 19 squares D．20 squares