①"I will think of it." It is easy to say this, but do you know what great things have come from thinking? Though we can not see, or hear, or feel our thoughts, they have great power (力量) !
②Isaac Newton was seated in his garden on a summer evening when he saw an apple fall from a tree. He began to think, and tried to find out why the apple fell. Then he discovered how the earth, sun, moon, and stars are kept in their places.
③James Ferguson once saw the inside of his father's watch, and he wondered, "Why should I not make a watch?" This set him thinking and it led to a wooden clock which kept good time.
④Walt Disney, the famous American film-maker, was often thinking of new ideas. One day, when he was in a meeting, he suddenly stopped talking, deep in thought. He looked and looked at a place high up in the room. This continued for a long time, end then he got an idea for a new cartoon.
⑤Ideas come at any time, end the important thing is to think. When you meet with any difficulty, don't lose heart. Try to think of it before asking someone to help you. Think and by thinking you will learn how to think creatively.
【小题1】Newton wanted to find out ________.

A father isn’t happy with his only son. He doesn’t think his son is clever.
One day, the father gives his son a task. He says, here is a coin. Go to buy one thing. That must be something to eat, something to drink, and something to plant.
“What can I buy with one coin? It is too hard!” Then a girl finds the boy is not happy and comes up to him. “Can I help you? ” The boy tells her that hard task. “I know what you can do, ” she says. “Go and buy a watermelon with this coin. ” It will give you everything your father wants.” The boy thanks the girl and then runs to buy a watermelon.
When the father sees the watermelon, he is very happy. “Good Job!” “In fact, that’s not my idea. A girl helps me”, says the boy. The father then says, “Honesty is more important than cleverness.”
根据短文内容，选择最佳答案。
【小题1】The father isn’t happy, because __________.