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shopping, we can use fewer paper bags and reuse them if we have some

In short, we should keep a balance (ƽºâ)between using paper and protecting trees, and do it now before it is too late.

56. When did the Chinese begin to use paper money? A. In the 5th centum B. In the 6th century C. In the 7ih centum D. In the 15th century

57. Why did Canada become an important country in paper making? A. Because it was a large country B. Because it had lots of forests

C. Because it was a very rich country D. Because the inventor was from Canada 58. In Finland. paper is used for______. A. making beds B. reducing waste C. making umbrellas D. keeping warm

59. According to the passage. how many trees are needed to make one ton of paper? A.10 B.17. C.2,800 D.48,000 60. Paragraph 5 mainly talks about______

A. how paper boots are made B. how paper was invented C. how we can save paper D. how we can make useful things Îå¡¢²¹È«¶Ô»°£¨±¾´óÌâ¹²5СÌ⣬ÿСÌâ1·Ö£¬¹²5·Ö£©

¸ù¾Ý¶Ô»°ÄÚÈÝ£¬´Ó·½¿òÄÚÑ¡ÔñÇ¡µ±µÄ¾ä×Ó½«¶Ô»°²¹³äÍêÕû¡££¨Ñ¡ÏîÖÐÓÐÁ½ÏîÊǶàÓàµÄ£© A. Do you know why she treats you like that? B. what's her name? C. Have you mentioned this to her? D. What's happened? E. She s very tall F. Or she probably feels lonely without you G. But she¡¯s so different A: Lingling, you look unhappy. What's up? B: Dad. I have a problem with my best friend A: 61 B: We¡¯ve been friends for five years. We went to different schools last term. And she came to

study at my school this tern. I was very happy al first 62 A: Can you tell me how she¡¯s different? B: She doesn¡¯t like me to see my other friends A: 63

B: Yes. I have. But she refused to listen. A: 64 B: No. I don t know.

A: Maybe she doesn¡¯t feel sure of herself 65 B: Maybe. What shall I do then?

A: You can introduce her to your other friends and encourage her to join in more. B: I see. Thanks, Dad. »úÃÜ¡ïÆôÓÃǰ

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Albert Einstein(1879-1955)

Early Life

Albert Einstein was born on I4th March,1879 in Germany. He was an extraordinary (·Ç·²µÄ)person since he was born. Einstein wasn¡¯t able to speak a word until three. He was curious(ºÃÆæµÄ)and imaginative. He loved watching things carefully and asked a lot of questions about them His questions were often hard to answer for teachers. Schooling

Einstein started school in 1885. Though he did well in maths and science, he failed in many subjects like history geography and languages. He was not the teachers favourite. He didn¡¯t enjoy going to school. Einstein finished high school in Switzerland and entered a university in Zurich. He graduated£¨´óѧ±ÏÒµ£©as a teacher of maths and physics in1900. Scientific Work

After graduation. Einstein worked at the Patent Office. He spent much time studying physics. By 1909, Einstein had become a top scientist. Though he became successful in the field of science, he still put great effort in scientific research. Finally, he won the Nobel Prize for physics in 1921. Later life

Einstein kept at his research until he died in 1955. Scientists studied his brain(ÄÔ)after his death to see if there was anything special about it. However there was no conclusion(½áÂÛ). Today, many famous scientists still think Einstein is the smartest man in the world. 71. Einstein loved watching things carefully and ______about them 72. Though Einstein_______ he failed in many subjects. 73. Finally. Einstein won the Nobel Prize _______in1921 74. Scientists studied Einstein s brain after he died so that_______. 75. Many famous scientists still think Einstein is_______. °Ë¡¢×ÛºÏÌî¿Õ£¨±¾´óÌâ¹²10СÌ⣬ÿСÌâ1·Ö£¬¹²10·Ö£©

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How do we know the time? A clock, a watch or a cell phone can help us. However many years ago there were no clocks and knowing the time was not so easy. Over the centuries people have

developed different w 76 of telling the time. About 5,500 years ago, the Egyptians i 77 the sun clock. This was a tall stone structure. Its shadow (Ó°×Ó)showed the movement of the s 78 they were able to determine£¨²â¶¨£©midday. About 3,500 years ago,the Egyptians made a sundial. It was smaller than the sun clock and could measure (²âÁ¿)the time for half a day. On c 79 days or at night it was impossible to tell the time with a sun clock or a sundial.

Water clocks were the f 80 clocks not to use the sun. The idea is simple. Water flows£¨Á÷¶¯£© from one container£¨ÈÝÆ÷£©to another. When the water reaches a certain l 81£ß it moves a lever (¿ØÖƸË)and this shows the hours. The Egyptians used water clocks about 3,400 years ago. These clocks were popular in the Middle East and China but they f 82 o keep accurate£¨¾«È·µÄ£©time.

In the 13th century. the mechanical clock was invented. This was more accurate, b 83 was expensive to make. Over the next few centuries it was developed. For example, springs(·¢Ìõ)were added around 1500. This i 84 accuracy and allowed clocks to be smaller. In 1927, the first quartz clock was developed. Clocks became cheaper to build and own. People began depending on them more and more to run businesses, markets and so on.

More recently, in1956, came the digital clock. And nowadays satellites£¨ÈËÔìÎÀÐÇ£©send our cell phones the time to the exact second. There has been a lot of progress in timekeeping but some things never c 85 . Man of us still have trouble getting out of bed on time and not missing appointments.

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