28.Dick is 7 and his sister Mary is 5.On Sunday they often play in the park.They can fly a kite and throw a frisby (扔飛盤). Today is Sunday.They are in the park with their father and mother.They play and play.Now Mother asks Dick to come and gives him a big cake,and says to Dick, "Dick,here is a cake and a knife.Cut(切)the cake in half,and give a half to your sister,but don't forget to do it like a gentleman(紳士)." "Like a gentleman?" Dick asks. "How does a gentleman do it? " "Give the big half to the other."Father says. "Oh,great."says Dick.He takes the cake to his sister and says to her, "Please cut this cake in half,Mary,and do it like a gentleman."
根據(jù)短文內(nèi)容回答問題: (1).How many people are there in Dick's family?