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My name is Mary. I am an English girl. I'm twelve. My dad and mom are English teachers. I have a brother. His name is Tom and he is thirteen years old. We are in China now. Tom and I are in Beijing No.4 Middle School. Tom is in Class 4, Grade 8 and I am in Class 9, Grade 7.I have a dog. It looks strong(强壮的)．It has a big mouth and two black ears. We have many Chinese friends here. They are kind(和善的).

根据短文内容，判断正误。

    Once there was a parrot on sale in a pet store. It was a beautiful red and blue bird. It sat on a perch in the middle of the store, so that everyone could see it when they came in. The owner was very proud of it and asked a high price for it.

    One day a man went into the store. “That's a beautiful bird,” he said to the pet store owner, “But why is it so expensive? Is it unusual bird?”

    “No, it's not very unusual. It's expensive because it can talk,” the pet store owner said.

    “I see. How can I make it talk?” the man asked.

    The pet store owner asked him, “Do you see those string tied to each of the bird's legs?”

    “Yes,”the man answered.

    “Well, you pull those strings,” the pet store owner told him. “That will make the parrot talk.”

    The man asked, “Do you mind if I try?”

    “Not at all,” the pet store owner said.

The man walked up to the parrot and pulled the string on its left leg. The parrot said, “Good morning.”

    The man pulled the string on the parrot's right leg. This time the parrot said, “How are you today?”

    “That's not very interesting, ” said the man. “Any parrot could do that.” Then he laughed, “But what would happen if I pulled both strings at the same time?”

    “I'll fall off my perch, you fool!” the parrot said.

    When my brother and I were children, we spent a few weeks each summer in the countryside with our uncle. He was a geologist and loved to go on long walks to find stones to add to his collection at the university. More often than not, we followed him.

    One day, we left early and this time, our uncle gave us two backpacks. "You can help me carry the samples（样本）," he explained.

    Sure, why not? The whole day, we walked around the countryside, and every now and then, our uncle put stones in our bags. We were a bit surprised that sometimes he also took some stones out from our bags, but thought he had just found better samples.

    We reached the house in the late afternoon. The backpacks were so heavy that we were really tired out when we put them on the ground. Yet our uncle's backpack was half-empty.

    "Why did you give us so many stones?" we asked. "I didn't. You did, "he said, waiting for a while before continuing." You did not know it, but I made you go through a little attitude（态度） test today."

    "What do you mean an attitude test?" we wanted to know.

    "It is something someone once did to me. You see, I listened to every word you said. And whenever you complained（抱怨） about anyone or anything, I added a stone to your bags. And whenever you talked about something in an attitude of positive thinking, I took out a stone. And now look at your backpacks." We did. They were full. "I hope you remember this little attitude test. You see, your negative（负面的） thoughts are like stones. You carry them in your mind just like those stones in a backpack. The more negative thoughts you have, the heavier your mind is. So look at those bags and start paying attention to what you say and how you say things."

    This little lesson was one of the most important I ever had. And I remember my uncle with great love for teaching us one of the most important lessons in life-the power of attitude.

    Once upon a time, there were three little pigs. They left their parents to see the world. All summer long, they played games and made friends. No one was happier than the three little pigs. Soon autumn came and it began to rain. The three pigs started to think they needed a house. They talked about what to do, but they had different ideas. The laziest little pig said he would built a straw hut(茅草屋). "It will only take a day, "he said. The second little pig built a wooden(木头的)house. It took him two days. But the third little pig built a house with stones. It took him over a week.

    One day, a wolf came. He broke the straw hut easily, and the laziest pig ran to his brother's wooden house. The wolf followed him and broke the door of the wooden house. They had to run to their brother's stone house .The wolf was so angry that he couldn't break the stone house. He left at last. Then the three happy little pigs, dancing in front of the house, began to sing. After that, they all worked hard and built strong houses.

    It was a Monday morning. When the teacher walked into the classroom, he heard a low voice. "Here's the teacher. I'm sure this boring fellow is going to talk about how to use commas." It was a boy's voice and the teacher knew who he was.

    However, the teacher didn't get angry. He said nothing about it, but really began to talk about how to use commas. And he wrote the following sentence on the blackboard, "Nick says the teacher is a boring fellow." The class laughed and Nick's face turned red. "Now," said the teacher, "I will tell you the importance of commas." He put two commas in the sentence and then said, "Nick, says the teacher, is a boring fellow." The whole class laughed again. Nick felt very surprised first, then his face turned much redder. Finally he couldn't help laughing with the other students, too.