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众所周知，塑料污染对环境有很大的危害，但使用塑料制品一定是件坏事吗？举个例子：生产一个塑料袋所消耗的自然资源以及运输它所产生的碳排放其实比生产和运输一个棉布袋所消耗的资源、产生的碳排放要少很多。如果可以重复使用这个塑料袋，而不是用过一两次后便将其丢弃，那么这个塑料袋对环境的危害并不一定比其它材质的袋子大。本文讨论塑料制品是否也有益处。
词汇：plastic pollution 塑料污染 Cotton or plastic: which kind of bag is better for the environment? Many of us would naturally say that the cotton bag is best, but that might only be true if you use that bag thousands of times. Surprised? Keep listening and we'll explain. There is no doubt that plastic is damaging for the environment in many ways. Producing it can cause toxins to be released into the atmosphere. It's used in great quantities and often disposed of after a single use, meaning even more then needs to be produced. Thrown-away plastic can sit in landfill sites for centuries, or alternatively can contaminate the sea causing harm to wildlife and breaking down into polluting microplastics. Because of these factors, many people are looking for ways to reduce their plastic use. However, the picture is not straightforward. Let's return to our cotton bag. It's certainly more biodegradable than plastic, but this might be where the advantages end. The industrial production of cotton requires far more energy, along with water and pesticides. As the bags are heavier, transporting them will lead to higher carbon emissions. An article from Columbia University suggests that cotton shopping bags need to be used over 7,000 times before they are more sustainable than plastic ones. It's not just about shopping bags. Lightweight plastic components in cars and planes help reduce fuel use and emissions. If we didn't use so much plastic in clothing and footwear, the amount of land, water and chemicals that would be needed to produce enough natural textiles and leather would be enormous. Researchers have been looking to see if carbon could be sequestered during the production of plastics, reducing the amount in the atmosphere. One other characteristic of plastic might actually be the key to this issue. The fact that plastic lasts for centuries is what causes much of the environmental harm, but it also means it can be used to make items that can be re-used again and again. The problem is that we often don't. Plastic can cause serious harm to the environment, and efforts to throw less of it away can reduce this. Re-using it more could be one way to achieve this. 词汇表environment 自然环境 测验与练习1. 阅读课文并回答问题。 1. What can be given off when plastics are produced? 2. True or False? Plastic deposited in landfill sites will quickly rot away. 3. According to the article, in what way are cotton bags better than plastic bags? 4. What benefit of plastic for vehicle production is mentioned in the article? 5. How could sequestering carbon during the plastic production process be beneficial? 2. 选择意思恰当的单词或词组来完成下列句子。 1. _______ are dangerous chemicals. Textiles Toxins Landfills Atmospheres 2. Too many people _______ plastic after using it once. dispose of sequester landfill thrown-away 3. The climate is getting warmer due to carbon dioxide in the _______. landfill toxins textile atmosphere 4. Re-using plastic makes it more _______. environmental sustainable contaminated textile 5. Plastic waste is hard to deal with because it is not _______. thrown-away landfill biodegradable environmental 答案1. 阅读课文并回答问题。 1. What can be given off when plastics are produced? The article says that toxins can be released into the atmosphere. 2. True or False? Plastic deposited in landfill sites will quickly rot away. False. Plastic can sit in landfill sites for centuries. 3. According to the article, in what way are cotton bags better than plastic bags? Cotton bags are more biodegradable than plastic bags. 4. What benefit of plastic for vehicle production is mentioned in the article. Plastic components are lightweight so they help reduce car fuel use and emissions. 5. How could sequestering carbon during the plastic production process be beneficial? Sequestering carbon during the plastic production process can remove carbon from the atmosphere. 2. 选择意思恰当的单词或词组来完成下列句子。 1. Toxins are dangerous chemicals. 2. Too many people dispose of plastic after using it once. 3. The climate is getting warmer due to carbon dioxide in the atmosphere. 4. Re-using plastic makes it more sustainable. 5. Plastic waste is hard to deal with because it is not biodegradable. |
