Pertanyaan

Read the text and answer the question! Throughout history, paper has been made from various plants, such as rice and papyrus, but today wood is the chief source of paper. In the past, paper was made by hand, but now most of the work is done by machines. Today paper is made from wood pulp by using either a mechanical or a chemical process. In the mechanical process, wood is grounded into small chips. During the grinding, it is sprayed with water to keep it from burning from the friction of the grinder. Then, the chips are soaked in water. In the chemical process, first, the wood is washed, and then it is cut into small pieces in a chipping machine. Then, the chips are cooked in certain chemicals. After the wood is cooked, it is washed to get rid of the chemicals. The next steps in making paper are the same for both the mechanical and the chemical processes. The pulp is drained to form a thick mass, bleached with chlorine, and then thoroughly washed again. Next, the pulp is put through a large machine that squeezes the water out and forms the pulp into long sheets. After the pulp sheets go through a drier and a press, they are wound onto rolls. These rolls of paper are then ready for use. The next time you use paper, you should think about its origin and how it is made. What would the world be like without paper? Ask yourself that question. If you imagine how it would be like, you will understand how essential paper has been in the development of civilization. The genre of the text above is ....