阅读下面材料，从每题所给的A、B、C、D四个选项中选出最佳选项。

Dear Edward,   

    How are you doing? I just visited Machu Picchu in Peru today. I've never seen such a great place before. This place is so amazing that I want to share my feelings with you.

When I first got to Machu Picchu, I felt like I was walking in the sky. Even the clouds were just under my feet. Do you know how high Machu Picchu is? I was surprised that it was at about 2,500m. How could people build a city on such a high mountain? It must have been very difficult to move stones there.

Before the Europeans arrived, the Incas (印加人) were the last and the most modern society in the Andes (安第斯山). The Incas were afraid that the Spanish would find them, so they built Machu Picchu on an Andes plain (平地) as a secret city in the 14th or 15th century. As a result, the Spanish never found Machu Picchu.

An American explorer discovered Machu Picchu in 1911. For a long time before that, nobody even knew Machu Picchu was there. After Machu Picchu was found, it was called "The Lost City of the Incas". It is still a mystery why and how Machu Picchu was left and forgotten by everyone.

I just had a wonderful day. Especially, I will never forget the "goodbye boy" who was a local boy dressed in traditional Inca clothes. When we went down the mountain by bus, the boy waved goodbye to us until we were out of sight (视线). He shouted some words at us too, and I guess, it meant, "Goodbye, come back again soon!" Why don't you visit Machu Picchu someday? I am sure you will love this place as much as I do.

                                                                                                                                                                      Yours truly,

                                                                                                                                                                          Lynn

    The American book Who Moved My Cheese has been a best seller all over the world. It teaches people how to face changes in their lives. It is just for teens. The book tells us that when facing change in our life, like a new school or new friends, don't be afraid. Use this change to make a better life.

    The book gives an example of a change at school. A school is changing from having two terms to three terms because there are too many students. Several teens are talking about this. Most of them are unhappy and worried. But Chris is not. He laughs and tells a story about two mice, two“little people”and some cheese.

    The four are in a maze(迷宫)looking for  The cheese. Here, cheese means some thing important in life. But they find the cheese is gone. The mice realize that they can't change what has happened and have to find more cheese. This means finding different dreams. The little people can't do this. They are afraid of change so they find no cheese.

    After Chris finishes the story, the friends understand one thing:to get more cheese, move in a new direction quickly. His friends understand how this can be used in the changes all teens face, such as doing well at school or feeling good about yourself.

    The cartoon movie Bolt is an interesting movie. All the characters are very lovely. The movie is about a dog and his name is Bolt. Bolt is a dog star. He always thinks he is very strong. He often plays in TV programmes. Many people love him. So he is a little proud.

    One day people take him to New York, but the poor dog is lost there. The place is far from his home town. It's about 2,000 miles away. Bolt wants to return to his world. He has to face all the danger by himself. He begins to go across the USA.

    On his way he meets Mittens, a lonely cat. Then they meet a mouse. His name is Rhino. He likes watching TV very much. They become friends.  They meet many strange animals and people on their way.

    At last Bolt feels that he can be a hero both in TV programmes and in real life. The movie is very instructive. Children can learn something from it.

    One day an American called Simon went to London to visit his friend. Rick told him that his flat was on the first floor. When he arrived, Simon went straight to the first floor of the building. But he was told that there was no Rick on that floor. Do you know why?

    In fact, the British call the first floor of a building the ground floor. The floor above the ground floor is the first floor, which Americans would call the second floor.

    The story shows that there are a few culture differences between Britain and America, though the British and Americans both speak English.

    The British usually hide their feelings. They seldom start a conversation with strangers. For example, on the train the British often spend their time reading newspapers or books. But Americans are quite different. They're more active and easier to talk with.

    The British and Americans may use different terms for many things. The British usually use football, eraser and mail while Americans prefer to use soccer, rubber and post.