A shop owner put up a sign above his door that said: "Pets For Sale".Just as he expected,a boy appeared at the sign. "How much are you going to sell the dogs for?" he asked.
The owner replied, "Any money from ＄30 to＄50." The little boy took out some money from his pocket. "I have ＄2.37," he said. "Can I look at them?"
"Sure," the owner smiled,taking out five little dogs.One was left behind.The little boy pointed to him and asked "What\’s wrong with him?" The owner then explained that the little dog was disabled （残疾的）.And he would never be able to walk quickly.
The little boy became excited, "That\’s the dog I want to buy!"
The owner said, "No,you don\’t need to buy that little dog.If you really want him,I\’ll just give him to you."
The little boy got quite upset.He looked into the store owner\’s eyes and said, "I don\’t want you to give him to me for free.That little dog worths （价值） the same as all the other dogs and I\’ll pay full price.In fact,I\’ll give you ＄2.37 now,and I will pay the rest of the money in a month."
The owner was surprised, "He can\’t run or jump and never play with you like the other dogs."
On hearing this,the little boy rolled up （卷起） his trouser leg to show his left leg supported by a big metal bracket （支架）.He looked up at the shop owner and softly replied, "Well,I don\’t run so well,either,and the little dog needs someone who understands him!"

（1）What did the boy want to do when he knew about the price for the dogs? ______
A.To buy all of them.
B.To feed all of them.
C.To take a look at them.
D.To get one of them for free.
（2）Why was the boy interested in the disabled dog? ______
A.Because the dog looked like the one he had before.
B.Because the dog was similar to him.
C.Because the dog was active and ran the fastest.
D.Because the dog was the only one that he could afford.
（3）What can we infer （推断） from the text? ______
A.The little dog will walk quickly with the help of the boy.
B.The shop owner gave the disabled dog to the boy for free.
C.The boy will go to the shop again to pay the rest of the money.
D.The shop owner will never know why the boy wanted that dog.