Humans can go to the hospital when they're ill. But as for animals, what should they do？To stay healthy, animals have their own ways to heal(治愈)themselves. Now let's get to know their special skills.

    Skill One

    Have you ever seen your dog or cat lick(舔)its wounds？Why do they do it？It probably feels good, but it's good medicine. Licking cleans a wound, and saliva(唾液)has chemicals that kill germs(细菌).

    Skill Two

    To avoid diseases, many animals have good living habits. They hate to be dirty. Most animals separate their pooping(排便)areas from their eating areas. Horses poop far away from the grass they eat. Rabbits put their poop in special pooping areas.

    Skill Three

    Have you ever heard of the expression "starve a fever(发烧时宜饿)"？Many animals stop eating when they're ill. When a sick animal stops eating, it can stop germs from getting necessary things.

    Skill Four

    Another way that animals heal themselves is to raise their body temperature. High temperature can kill germs. Warm—blooded animals(like us)get fevers to fight with germs.

    Cold—blooded animals(like snakes)look for pieces of wood or rocks heated by the sun.

    Fish move to warmer waters.

     Xinhua News Agency reported 3,000 yellow school buses started their service in Chongqing1the end of 2011. These school buses are like the ones in the US as we usually see on TV and in 2 .

    The school buses are bright yellow in colour. They are 3than the army's cars. They are from the US. The yellow school bus has a big 4.This keeps the students safe when other cars crash into the school bus. The bus also has some   5devices(设备), such as warning lights and a stop signal arm.

    In China, school buses became popular in the past few years. On the bus, except(除了) the bus driver, there is always a 6whose duty is to watch the students. Children usually rest on the bus. Some of them also recite texts. School buses in China are not 7.The fee is different from school to school.

China has a rich and colorful cultural history，and masks have played a major role in Chinese tradition in thousands of years. Why do people wear masks？The reasons are to protect their body，to hide themselves，masks are used all over the world. 

African masks are usually made by a traditional style. There are many different kinds of African masks，but many of them represent animals. African masks are a part of full—body costumes and they are made for dancers. The dancers usually wear the masks in religious events. 

Japanese masks have been used in many different performances such as dance，theater，festivals or religious events. They represent heroes，devils，ghosts，cloth，wood，or some paper. 

Greek masks are used to represent the spirits of nature during religious events. Also，theater actors use masks to show different characters. In Rome，devil and other masks are used in carnivals（节日）. 

Today，masks continue to be of great artistic entertaining value. 

My home town has changed a lot in the past three years. For example, a river runs{#blank#}1{#/blank#} my home town. There was no way {#blank#}2{#/blank#} the river on foot, so students went to school by boat. But now, the government has built a bridge {#blank#}3{#/blank#} the river. It helps us get to school easily. And I feel happy as I walk {#blank#}4{#/blank#} the river because our living conditions are getting better.