Let's say you are taking a walk along the road and you happen to see one or two waste bottles lying on the grass beside the road． What would you do？
You may have different choices． Firstly ，you can leave the bottles there as they are． It was not you who threw them away． Why should you do something about it？ This is quite OK． Secondly， you can pick them up and throw them into a dustbin （垃圾箱）． By doing this，you have walked a step further to help make our homeclean． This action is a better choice． Thirdly， you might want to pick them up and give them to an old man or woman who collects waste for a living． If this is your choice， you have walked even further． You're not only thinking about doing something for the environment， you're also developing yourself to be a person who would think of others and help them．
As for young kids， they may always have such a question："When do I grow up？"Yes! When does a child grow up？ And how can a kid know he or she has grown up？These are interesting questions．As for us，fifteen﹣year﹣olds，who are finishing middle school， we're no longer younger children．We should know whether or not we have grown up． When we start to have a sense of offering a helping hand for a cleaner city and greener world， and when we have a loving heart to think more of others than of ourselves and are ready to help them， we can say that we have grown up．
Remember： If we help others， others will help us． If we do our best for nature， nature will offer its best to us in return !
（1）How did the writer start the passage？
The writer did it by giving a（n） of daily life．
（2）How many choices are there in the second paragraph？
There are choices．
（3）What does it mean when you pick up the waste bottles and give them to someone else？
It is a sign that you're a person that has grown up．
（4）What does the underlined word "home" refer to in the second paragraph？
It refers to the " " we live in．
（5）How did the writer support the main idea in the passage？
The writer used as an example to support the idea．
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