阅读下面短文，从短文后各题所给的四个选项(A、B、C和D)中，选出一个最佳选项。
“Daddy, can I have a piece of cake？” my oldest son asked me.
We had just been to the gym and stopped to eat at the restaurant.
“No，” I replied, “you don't need a piece of cake.”
My son 1 15 in a few days. He 2 over 6 feet tall. He is very slim and athletic in shape . It was not always that way. My wife wrote a book about the challenge and 3 of getting him fit. He now takes it 4 and looks as if he's never been overweight in his life.
He had a full plate of vegetables and tofu. He didn't need a piece of cake. 5 ， everything in the restaurant is quite 6 . Our dinners could have 7 a family of seven at a fast food restaurant. That cake probably 8 $5.
He was silent as he looked at the delicious cakes. I had forgotten that I had walked over to the cake shelf while he was 9 his food from the buffet (自助餐)．
I looked at my plate. There sitting on the edge was a piece of 10. I looked at it wondering but also knowing how it got there. “We will divide it，” I said.
A few days later my oldest son was 11me again. We stopped at a 12 . He ordered a sandwich. I then13 two sandwiches. He immediately barked, “Can I have two？” He wanted 14what Daddy had.
Your kids are very 15 to put on their trays, exactly what you have on yours, and I think this applies to (适用于) more than food. Keep your life plate with only what you want your kids to have.
