阅读下面的五篇短文，根据短文内容，从短文后各题所给的A、B、C、D四个选项中，选择最佳选项。

　　Volunteering means spending some of your free time helping others．You may volunteer to help other people, but you can also volunteer to protect animals, the environment, or any other things that you care about．

　　Volunteering helps others, but it can also help you．If you’re worried about something that's happened, doing something can be a great way to deal with(处理)your feelings．

　　Volunteering can let you see your own life in new ways．Sometimes it's easy to worry about things like grades or get angry because you don't have the most expensive shoes or the newest computer game．Volunteering lets you spend some time on others for a while．

　　Lots of people find that they really enjoy volunteering．Volunteer experiences often put you in a different environment．Doing volunteer work means one very important thing： You make a difference in the world．

　　Volunteering is a great way to have fun with your family, and here are some ideaas on how you can do together．

　　●Clean up a park, or a road along a river．

　　●Plant trees or flowers in your community(社区)

　　●Serve food at a homeless shelter(收容所)

　　●Give meals to people who are elderly or ill at home．

　　●Clean up a school or other public buildings．

　　Some schools now require(要求)kids to spend some of their time on service to others．Volunteering gives kids a taste of responsibility, because people are depending on them for something important．Volunteering also can help kids learn important things about themselves．A volunteer job can even help some kids decide what they want to do when they grow up．So what are you waiting for? Make a plan to start volunteering today!

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　　Did you know that each day one person in the US throws away 4.4 pounds of rubbish?Almost every month, we throw away our own rubbish in packaging alone．Packaging(including boxes, bags, etc)comes to our homes with the things we have bought．Several weeks ago, the TV news said that in a city in Italy tons of rubbish were piled up in the streets, and the smell was rather terrible．What can we do to help?We should get to know the following Rs．

　　Reduce To reduce means to make less rubbish．That is one of the first things we all should do for the environment．Reduce your rubbish by doing things like packing your lunch in reusable containers(可再利用的容器), taking smaller potions(份)at dinner so you don't waste food when you have had enough, writing on both sides of paper, and using less water when taking a shower．

　　Reuse To reuse is to use things again．Think about the bags you get from the store．They can be reused to carry your lunch, to hold your rubbish, or to collect used cans．You can even take them back to the store the next time to carry your things instead of getting a new bag!

　　Recycle(回收利用)Recycling is an important part of keeping our planet clean and green．It can also save energy．Be sure that you don't throw things in the rubbish that can be recycled to make something else．Paper, plastic, cans and bottles can all be recycled, but food, electrical waste and mobile phones can't．When you are not sure whether something can be recycled, go to your parents and teachers for advice．

　　Follow the three Rs, and every one of us can do something to save the earth．It is also the best way to save ourselves．

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