5．How much paper do you use every year？Maybe you can't answer this question quickly．In 1990 the world's use of paper was about one kilogram for each person a year．Now most countries use as 50kilograms of paper for each person in a year．But such countries like America，England and Sweden，use more paper than other countries．
Paper was first made in China about 2000years ago．It was made from the hair like parts of certain plants．Paper was not made in southern Europe until about the year 1100．In 1500，a German named Schaeffer found out that people could make the best paper from trees．After that the forest countries of Canada，Sweden，America，Finland became the most important ones in paper making．
When we think of paper，we think of newspaper，books and writing paper．But there are many other uses．Only half of the paper is used for books and magazines．Paper is very good for keeping your warm．Houses are often insulated with paper．
You may see some people sleep on a large number of newspapers．They are insulating themselves from the cold．In Finland sometimes the temperature is 40degrees centigrade below zero．The farmers wear paper boots in the snow．Nothing could be warmer．
Each year more and more things are made of paper．We have paper cups and plates for a long time．Now we hear that chairs，tables and even beds can be made of paper．With paper boots and shoes，you can wear paper hats，paper dresses and paper raincoats．When you have used them once，you throw them away and buy new ones．
People have made paper boats，but they haven't made paper planes or cars．Just wait-perhaps they will make planes or cars someday．
46．The underlined word"insulate"in the passage means"C"in Chinese．
A．取暖
B．制作
C．隔绝冷或热
47．In Finland farmers wear paper boots in the snow so that they canC
A．become the most fashionable
B．save a lot of money
C．keep themselves warm
48．PictureC shows the right feather（特点） of paper．
49．Which of the following is TRUE according to the passage？B
A．Each person use fifty kilometers paper in a year in most countries now．
B．Paper was first made from the hair like parts of certian plants in China about 2000years ago．
C．After paper was made in southern Europe in the year 1100，the forest countries became the most importan ones in paper making．
50．The best title of this passage should beB．
A．HOW TO USE PAPER
B．THE INTRODUCTION OF PAPER
C．THE FUTURE OF PAPER．
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