Phong Trần

Những câu hỏi liên quan
Dang Van An
Xem chi tiết
An Trần
20 tháng 10 2018 lúc 21:03

Help me

PAPER RECYCLING

A Paper is different from other waste produce because it comes from a sustainable resource: trees. Unlike the minerals and oil used to make plastics and metals, trees are replaceable. Paper is also biodegradable, so it does not pose as much threat to the environment when it is discarded. While 45 out of every 100 tonnes of wood fibre used to make paper in Australia comes from waste paper, the rest comes directly from virgin fibre from forests and plantations. By world standards, this is a good performance since the worldwide average is 33 percent waste paper. Governments have encouraged waste paper collection and sorting schemes and at the same time, the paper industry has responded by developing new recycling technologies that have paved the way for even greater utilization of used fibre. As a result, industry’s use of recycled fibres is expected to increase at twice the rate of virgin fibre over the coming years.

B Already, waste paper constitutes 70% of paper used for packaging and advances in the technology required to remove ink from the paper have allowed a higher recycled content in newsprint and writing paper. To achieve the benefits of recycling, the community must also contribute. We need to accept a change in the quality of paper products; for example, stationery may be less white and of a rougher texture. There also needs to support from the community for waste paper collection programs. Not only do we need to make the paper available to collectors but it also needs to be separated into different types and sorted from contaminants such as staples, paperclips, string and other miscellaneous items.

C There are technical limitations to the amount of paper which can be recycled and some paper products cannot be collected for re-use. These include paper in the form of books and permanent records, photographic paper and paper which is badly contaminated. The four most common sources of paper for recycling are factories and retail stores which gather large amounts of packaging material in which goods are delivered, also offices which have unwanted business documents and computer output, paper converters and printers and lastly households which discard newspapers and packaging material. The paper manufacturer pays a price for the paper and may also incur the collection cost.

D Once collected, the paper has to be sorted by hand by people trained to recognise various types of paper. This is necessary because some types of paper can only be made from particular kinds of recycled fibre. The sorted paper then has to be repulped or mixed with water and broken down into its individual fibres. This mixture is called stock and may contain a wide variety of contaminating materials, particularly if it is made from mixed waste paper which has had little sorting. Various machineries are used to remove other materials from the stock. After passing through the repulping process, the fibres from printed waste paper are grey in colour because the printing ink has soaked into the individual fibres. This recycled material can only be used in products where the grey colour does not matter, such as cardboard boxes but if the grey colour is not acceptable, the fibres must be de-inked. This involves adding chemicals such as caustic soda or other alkalis, soaps and detergents, water-hardening agents such as calcium chloride, frothing agents and bleaching agents. Before the recycled fibres can be made into paper they must be refined or treated in such a way that they bond together.

E Most paper products must contain some virgin fibre as well as recycled fibres and unlike glass, paper cannot be recycled indefinitely. Most paper is down-cycled which means that a product made from recycled paper is of an inferior quality to the original paper. Recycling paper is beneficial in that it saves some of the energy, labour and capital that go into producing virgin pulp. However, recycling requires the use of fossil fuel, a non-renewable energy source, to collect the waste paper from the community and to process it to produce new paper. And the recycling process still creates emissions which require treatment before they can be disposed of safely. Nevertheless, paper recycling is an important economical and environmental practice but one which must be carried out in a rational and viable manner for it to be useful to both industry and the community.

i. Process of paper recycling

ii. Less threat of waste paper to the environment

iii. Collection of paper for recycling

iv. Sources of paper for recycling

v. Bad sides of paper recycling

vi. Contribution of community to recycling paper

Your answer:

1. Paragraph A ...........iii. Collection of paper for recycling............

2. Paragraph B ..........vi. Contribution of community to recycling paper.............

3. Paragraph C ...........iv. Sources of paper for recycling............

4. Paragraph D ............i. Process of paper recycling...........

5. Paragraph E ...........v. Bad sides of paper recycling............

Bình luận (0)
Dang Van An
Xem chi tiết
Dương Minh
Xem chi tiết
Nguyen Hoang Hai
18 tháng 10 2019 lúc 17:45

Đáp án: A

Giải thích: as = since = because: bởi vì

Dịch: Bởi vì dân số tăng lên, nó sẽ trở nên khó khăn cho đất chứa để chứa được quá nhiều rác.

Bình luận (0)
Dương Minh
Xem chi tiết
Nguyen Hoang Hai
8 tháng 6 2018 lúc 13:43

Đáp án: B

Giải thích: cấu trúc a number of + Ns: nhiều, một số lượng lớn

Dịch: Đó là lý do tại sao một số lượng lớn các ngành công nghiệp ủng hộ các chương trình mà họ có thể nhận được nhiều các vật liệu có thể tái chế thành sản phẩm mới.

Bình luận (0)
Dương Minh
Xem chi tiết
Nguyen Hoang Hai
29 tháng 11 2018 lúc 17:53

Đáp án: A

Giải thích: cụm từ such as dùng để liệt kê, mang nghĩa “ví dụ như”

Dịch: Có bảo tồn tài nguyên thiên nhiên, ví dụ như nước, khoáng chất, than đá, dầu mỏ, khí đốt và gỗ.

Bình luận (0)
Dương Minh
Xem chi tiết
Nguyen Hoang Hai
18 tháng 4 2017 lúc 16:11

Đáp án: A

Giải thích: chủ ngữ “it” số ít nên động từ chia số ít

Dịch: Khi điều này xảy ra, thành phố của ta và cảnh quan tươi đẹp sẽ phải đối mặt với ô nhiễm, nhiễm độc và nhiều vấn đề về sức khoẻ.

Bình luận (0)
Dương Minh
Xem chi tiết
Nguyen Hoang Hai
22 tháng 3 2019 lúc 4:43

Đáp án: D

Giải thích: cấu trúc bị động allow st to be P2: cho phép cái gì được làm

Dịch: Tái chế cho phép tất cả những đồ bỏ đi này được dùng nhiều lần để cho nguồn tài nguyên mới không phải bị khai thác.

Bình luận (0)
Dương Minh
Xem chi tiết
Nguyen Hoang Hai
30 tháng 10 2019 lúc 16:50

Đáp án: D

Giải thích: cụm từ reason why: lý do tại sao

Dịch: Một trong những lý do lớn nhất tại sao tái chế được thúc đẩy là nó làm giảm áp lực lên môi trường.

Bình luận (0)
Dương Minh
Xem chi tiết
Nguyen Hoang Hai
9 tháng 11 2018 lúc 5:50

Đáp án: B

Giải thích: cấu trúc be/ become + adj + for sb/st + to V: trở nên như thế nào cho ai khi làm gì.

Dịch: Bởi vì dân số tăng lên, nó sẽ trở nên khó khăn cho đất chứa để chứa được quá nhiều rác.

Bình luận (0)