If you live in Shanghai, you might have to take a lesson in sorting garbage.     1     is now required to do is that people should sort garbage into four categories. However, if people fail to sort their garbage as required, they can     2    (fine) up to 200 Yuan.

More cities are introducing similar regulations,     3     (follow) the practice in Shanghai. However, garbage sorting is still a big problem in China. Only 30% of the participants think they are     4    (proper) sorting their trash. It’s partly because many people lack their     5    (willing) to sort their own waste. It’s    6     must to have a legal guarantee    7    (promote) garbage sorting, said Liu Jiangbo, a professor from Tsinghua University.

Apart from China, many other foreign countries also     8    (introduce) garbagesorting regulations in the past years. In Japan, waste sorting has become a basic survival skill. There is a     9     (fix) time for the disposal (回收) of each kind of garbage and littering can result     10     high fines and even jail time. Over 90% of the public believe that garbage sorting is important for the protection of environment.

Learning you are interested in a waste-sorting program in China, I am writing to give for you a brief introduction. As far as I know, Shanghai had become the pioneer of waste sorting in our country. Residents in Shanghai are allowed to simply dump their waste bags in dustbin. Instead, domestic waste is required to be classifying into four categories: dry refuse, wet trash, recyclable waste or dangerous waste. Face with the new rule and for every waste item under careful supervision (监督), many citizens in Shanghai find it a little too complicated and difficult. However, the majority of the people firm support the policy because it helps us live a greener life and makes our country most beautiful.

With the development of science and technology, our life is becoming much better and more convenient. However, more garbage and pollution    1    (produce) at the same time, which    2    (lay) a heavy burden on our environment.     3    is known to all, environment plays a vital role in our daily life. In response to the severe situation, we should take effective    4    (measure) to protect the planet where we coexist. It is suggested that we should sort waste    5    (relieve) the situation.

Garbage classification, which is a good way to protect our environment, can’t be overemphasized. It can help separate recyclable waste, which can be    6    (full) used to help save the resources to a large degree. Not only can we make our environment clean and beautiful, but also recyclable waste can be made good use of to benefit us     7     return.

As garbage classification is significant, we should take    8    active part in putting it into practice. It’s a must for    9    (we) to learn to sort waste. It is the little things we do today that have a profound influence on the planet. Only if all of us make joint efforts can we make a big    10    (different) and have a good environment.

One type of recycling, called downcycling, involves repurposing a material into a new product of lesser quality. It can include varying grades of plastic, paper products, and other materials.

Downeycling     1     (know) as downstream recycling. It is most common in terms of     2     (industry) materials. These products lose their value as they are recycled,     3     limits their capacity for new use. Their recycled form is typically both weaker and cheaper     4     their original one. White writing paper, for example, is often downcycled into cardboard; once downcycled to this new form, it can no longer be used as white paper again.

    5     (give) products a new life is considered a good way to reuse materials and avoid waste. Once downcycled to their full capacity however, these materials are eventually so degraded that they cannot be reused further. Since downcycled products are considered of lower quality than their original form, they cannot be used in remaking their original product.

Products are provided with codes     6     (determine) their grades and whether or not they may be recycled. Plastic, glass, and aluminium products     7     (code) with the number one may be remade into something     8     equal or greater value. This type of recycling is known as upcycling, and represents the forward compatibility of recycled components.

Items available for downcycling often require additional chemicals, energy,     9     other treatments in order to transform them into something usable. Durable plastic products in particular require much additional treatment. Trash bins, tables, and chairs are also considered materials with     10     high energy cost to recycle.

9 . As Shanghai prepared to introduce mandatory(强制的) garbage sorting on July 1, games and toys that examined fun ways to spread information about the garbage sorting were to encourage younger people to take action.

A 15-second video of a game went on Chinese social media. In the video, players wearing VR headsets saw four different types of trash cans in front of them, and had to throw different types of garbage into the right buckets(桶) to get points. Although it was not the only VR game in the place, visitors lined up around the booth to explore it because of the garbage-sorting theme.

“As a citizen in Shanghai, I am in great need of this game. Maybe I won’t need to check how to categorize(将……分类) each piece of garbage on my phone while going through all my garbage every day if I play this game more often,” said Zhou Zhou, a youngster. But some social media users in Shanghai have complained about the difficulty of sorting different types of garbage.

Wu Xia, founder and CEO of VitrellaCore, the company that created the game, said the idea was to provide an interesting way of learning about garbage sorting. “It’s simple and easy to understand. People can practice sorting garbage without actually going through their trash, and it is a more effective method than using paper materials when training volunteers,” Wu said.