—It's about 1.3 billion.

A

    Last month, I went to London with my mom and dad. Firstly, I took pictures of Big Ben, cute taxi, River Thames, and so on. London is as good as I know it! As soon as I stepped off the train into St. Pancras Station, I found I was in heaven. You can see lots of people from every culture. The taxi drivers spoke in this city's English, which was almost like another language. And there were many of the “old” London taxis, just like the ones you see in the movies. I found the people to be really friendly, for the most part, and the city was clean and exciting. I saw a show and it was popular in the country. I took many pictures of the interesting places. Big Ben sat tall over the River Thames, just as I saw in all the pictures and movies. London is truly one of the most magical cities in the world.

B

    On a small farm in Mexico, there are no schools. A bus is the school. The driver of thebus is the teacher. It's a school bus, but it doesn't take the children to school. It just goes round from place to place, and sometimes it comes to this farm. The bus will stay here for three months. The farmers call it a school on wheels (轮子). Every time when the bus comes, the farmers will come running to it, shouting and laughing. They warmly welcome the school bus. When the busis on the farm, in the morning, the teacher teaches the small children. In the afternoon, the bigger children come to have their lessons because they must work in the morning. At night, the fathers and mothers come to school. They want to learn, too. How the farmers hope that some day they can have a real school on their farm!

— _______________ There's still lots of time left.