Hello, everyone. Because of the high rate of school violence in some areas, teenagers' safety becomes a serious problem. We are planning to set up an organization named School Watch to make sure that students have a safe environment. Please be part of our plan! What is School Watch? School Watch is a volunteer project in our school. It helps us stop violence and improve the quality of school life. It will keep yourself and your schoolmates safe. The other members of School Watch care for you and your classroom and you do the same for them. Is it for everyone? Anybody can become a member of School Watch because everyone has something to offer. What else can it do? School Watch makes it possible for us not only to help each other but also to make friends with each other. Some members may offer to help schoolmates who have problems with their homework. Who is the Best School Watcher? Our school will look for the Best School Watcher and give him or her lots of prizes. You could be the one! How do you start? To be part of this plan, the only thing you need to do is to talk to the director of the plan in your grade. If you want to get more information, check the official website atwww. schoolwatch. com. The members of School Watch are probably _ . A) teenagers B) parents C) policemen D) teachers
A

My name is Mary. I'm a student. I'm twelve. My father is a policeman. My mother is a nurse. Nick is my brother. We are all at home today, because today is Sunday. My brother Nick is a student, too. We are in the same school. There are thirty-five classes in our school. My classroom is very big. How old is Mary? _ . A) 12 B) 14 C) 13 D) 30
A

London used to be "foggy" for the same reason that cities like Beijing or Chongqing are "foggy" today. The "fog" was in fact smog, a mixture of smoke and fog. In other words, it was made by air pollution. In London, some of this pollution came from factories, but much of it came from the coal that people burnt in their houses to keep warm during the winter. By the 1950s, London's smog problem had become so bad that the government decided to do something to clean the air. A new law was made and nobody could burn coal in any British city. Within a few years, the air became much cleaner. There were no more " _ ". Many Chinese cities now face the same sort of problem with air pollution that London faced 40 or 50 years ago. However, this problem is more difficult for Chinese cities to solve. One reason is that more of the pollution comes from the factories, rather than from coal burnt in people's houses. If these factories were closed, this would harm the economy and lots of people would lose their jobs. Another reason is that changing from coal to cleaner fuel , like gas, is quite expensive. However, the air in many Chinese cities is becoming cleaner and cleaner, as the government and people pay more and more attention to cutting down pollution. As a result, there are fewer "pea-soupers" in Beijing than there used to be. What was the main reason for air pollution in London? A) There was too much smoke in the sky. B) There were too many factories in the city. C) People burnt too much coal in the houses. D) The city was too big for the cleaners to clean.
C