阅读下面短文，掌握其大意，然后从各题所给的A、B、C、D四个选项中选出最佳选项。

Xiao Hua is twelve years old. His sister, Xiao Wei, is two years younger 1 him. This Sunday they helped their mother do some 2. Xiao Hua cleaned the bathroom and Xiao Wei washed the clothes. Because they did a 3 job, their mother bought a delicious cake for them. She said to Xiao Hua, "Xiao Hua, cut the cake into two halves, and give the 4 half to your sister. Don't 5that you should do like a brother. " "Like a brother? "Xiao Hua asked. "Yes. I once 6you the story of Kong Rong, right? A good brother 7 be like Kong Rong. "answered his mother. Oh, I see. "said Xiao Hua. He 8 about it for a while, and then he took the 9 to his sister and said to her, "Xiao Wei, cut it into two 10, and be a good sister.