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.

    It is difficult for the parents of every family to teach their children to be responsible (有责任的) for housework.

    The Shatian School in Shanghai is making its students do housework for their parents. The third graders(三年级学生) must learn how to cook and clean, sixth graders do the laundry(洗衣服) and seventh and eighth graders cook balanced meals with 15 yuan.

    Many parents think it's a good way for children to try housework but they don't know how to do it at home. With the following ideas, you really can get your children to help at home.

    If you want to make your children think that they can do everything quite right, please don't always scold(批评) if them but give them lots of praise at home. Talk more about what they did right, not about what they didn't do. If your child finishes some difficult work, give him or her a Sunday trip or a ball game with Dad as a reward.

    If you had billions of dollars, would you donate almost all of it to charity? Well, that's what Mark Zuckerburg, CEO and founder of Facebook, just said he would do.
    Zuckerburg and his wife Priscilla Chan promised to give 90% of their Facebook shares to society. Right now that is about $45 billion, and they plan to donate the money to things like science and education.
    Many billionaires have done similar things. Bill Gates, creator of Microsoft, made The Giving Pledge, an activity in which billionaires promise donate more than half of their wealth to charities. This started in 2010, and now 139 people from 15 countries joined it.
    But giving back and helping others isn't just for big billionaires. People like Zuckerberg, and Gates may have more to give, but people with less are doing it, too.
    Especially around the holidays, people want to do their part and give back to people who are less lucky than them. Schools may have food collections where people bring a few food items, and together they can make a big donation to places like homeless people's homes.
    People also host special events like concerts of runs to be creative while raising money. Regular people donate whatever they can to US charities like the United Way and the American Red Cross.
    Then these charities are able to help US communities in different ways like education, health and improving the lives of the poor. These individual donations come together to make a big difference.

Imagine （想象） walking into a movie theater without being greeted by the smell of popcorn. It's hard to believe, isn't it? For many people, popcorn goes hand in hand with movies. They can't have one without the other. But 1  did this happen?

The 2  between the two is younger than you may think. In the mid-1800s, popcorn was already a popular snack in America. Vendors sold it on the 3  . People, especially kids, loved this street food. In the early 1900s, vendors started to sell popcorn 4  movie theaters.

However, theater owners didn't like popcorn. They believed it would make the experience of watching a movie 5  enjoyable. Eating it would make too much noise during the silent movies.

Later, when movies added sound, the 6  noise problem went away. More and more people went to the movies. Some of them even secretly（秘密地） took popcorn into the theaters. Later, more movie theaters 7  . Some of them agreed people to eat popcorn while they were watching movies.

In the 1930s, the theater owners found that people didn't need to buy popcorn from street vendors. Because popcorn was 8  to make, they could make and sell it themselves. They did that and the smell of popcorn drew more people to their theaters. The 9  made a lot of money, and people enjoyed themselves at the movies.

Today, popcorn is still an important part of the movie-going experience. Roles, a man who once ate three bags of popcorn, said, "People come to theaters sometimes just for the 10 . They don't even care what is playing!"