Điền từ thích hợp vào chỗ chấm People was ...........by the Chinese in the first century AD. Most paper is made ...........wood . when trees are ........... they are transported ............. land or water to paper mill . here they are cut ............ and the wood is broken up into fibres . which are ................. with water and chemiscals . this wood pulp is then dried on a machine and .................. into paper One tree is needed for every 400 ............... of a typical forty - page newspaper . If half the adults in Britaint each buy one daily paper , this uses up over 40.000 trees a day . Trees are being cut down faster than they are being .............. so there may be a(n)................. paper shortage before the year 2010

Để hoàn thành bài tập trên, bạn cần điền từ thích hợp vào chỗ trống trong đoạn văn đã cho. Các từ cần điền có thể là:

1. Invented
2. From
3. Cut
4. By
5. Up
6. Mixed
7. Rolled
8. Pages
9. Replanted
10. Acute

Câu trả lời cho câu hỏi trên là:
- Paper was invented by the Chinese in the first century AD. Most paper is made from wood. When trees are cut, they are transported by land or water to a paper mill. Here they are cut up and the wood is broken up into fibers, which are mixed with water and chemicals. This wood pulp is then dried on a machine and rolled into paper.

- One tree is needed for every 400 pages of a typical forty-page newspaper. If half the adults in Britain each buy one daily paper, this uses up over 40,000 trees a day. Trees are being cut down faster than they are being replanted, so there may be an acute paper shortage before the year 2010.

This wood pulp is then dried on a machine and formed into paper.

The fibers are mixed with water and chemicals to create wood pulp.

Here they are cut into small pieces and the wood is broken up into fibers.

When trees are harvested, they are transported either by land or water to a paper mill.