22. We produce lots of rubbish in our everyday lives and make the environment bad. So rubbish sorting (分类) is needed urgently (紧急地). Nowadays, a new rubbish sorting system has been put into use in our city. Local people not only sort their rubbish, but also put QR codes ( 二维码) on it. "When the rubbish is collected and the codes are seen, I will get reward points to exchange for small gifts and even some money, " one of the local people told reporters. "It's really creative and encouraging. "
What's more, rubbish sorting saves resources(资源), which could bring economic benefits(经济利益). For example, a ton of waste paper can be reused to make about 850 kg of paper, saving 17 trees and 50% of water. Because of their benefits, some countries have developed successful sorting systems.
In Japan, the government gives instructions and directions to every family on how to sort special rubbish every year. When you throw away a water bottle, you should strictly put the cap, the wrapper (包装纸) and the bottle itself into three different bins.
In Australia, every family is provided with three rubbish bins﹣the red bin for "general waste"like food and plastic bags; the yellow bin for "recycling" like steel and glass;and the green bin for "green waste", such as grass and leaves. On the streets, the bins are printed with pictures of the things that are allowed inside, which makes recycling quite easy.