Pertanyaan

Do you know how paper is made? Well, people make paper from trees. First, they cut down the trees that make good paper, and then they transport the logs to the factory. At the factory, they wash the logs to rinse away the dirt and other impurities. After that, the logs are put into machines to make small wood chips and then process these chips into pulp. This pulping process is to separate the wood fibers. This is important, because different kinds of paper need different kinds of fiber. So, that is why they have different techniques for pulping, too. The pulp looks like a mushy and watery solution, but if you look at it with a microscope you can see the individual fibers. All have been separated. When you get this, you are ready to make paper. You do it by removing the water, because 99% of the solution is water. To remove the water, they spray the soup on a long wide screen. They call this the wire. And then, the water runs to the bottom of the wire, and the fibers are caught on the top side of the wire. Here, the fibers bond together and then make a thin mat, the fiber mat. Then, people squeeze this mat with rollers to remove more water. After this pressing, the mat still contains water. It is about 60% of the mat. Now, the mat is ready to go to the drying process. The mat, then, has to go through some rollers, sometimes a dozen of them. These hot rollers seal the fibers closer and closer, and eventually turn the mat into paper. To make paper with the same thickness, the next step is to use a paper machine. It is called the calendar. This machine has big iron rollers that press and dry the paper smooth and at the same thickness. From here, you can do everything else. You can coat it with fine clay to make it glossier and easier to print on, and so on. That is why paper comes in different sizes, thicknesses, and appearances. "This pulping process is to *separate* wood fibers." (Paragraph 2) The opposite meaning of the underlined word is .... A. link B. mend C. unite D. split E. disconnect

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