科学与人类生活 science and technology have been bringing human beings tremendous benefits. thanks to science and technology, we now live comfortably and conveniently in houses furnished with air conditioners, refrigerators, washing machines and televisions etc. thanks to science and technology, we can eat fresh vegetables att the year round. thanks to science and technology, we can travel tong distances in the fraction of a second on planes, trains and cars. thanks to science and technology, we wear clothes with synthetic materials which can not easily be worn out. however, science and technology have atso brought us a tot of disasters. first, because of the many breakthroughs in the field of medicine, people are now living much longer than they used to. as a result, the population of the world is increasing, causing tots of problems. second, because of the development of industry, tots of the wastes from factories pour into the air and rivers, causing pollution of att kinds. third, some terrorists are using science and technology against mankind. they use biological, chemical and unclear weapons to threaten world peace...
so its urgent that we find ways to solve these problems. but we should not stop the development of science and technology because of these disasters they bring, just as we should not give up eating for fear of choking. in addition, we should make some rules to regulate our actions. as long as we use science and technology in a proper way, they may bring us even more benefits.
2015秋鲁教版英语八上Unit 4《An old man tried to move the mountains.》(SectionB 1a-2e)ppt课件
鲁教版英语七上《Unit 9 What do you think of game shows》ppt课件
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2015秋鲁教版英语八上Unit 3《What were you doing when the rainstrom came》(SectionA 4c)ppt课件
鲁教版英语八上《Unit 3 What were you doing when the UFO arrived》ppt课件之二
2015秋鲁教版英语八上Unit 5《What’s the highest mountain in the world》(SectionB 3a)ppt课件
2015秋鲁教版英语八上Unit 6《Have you read Treasure Island yet》(SectionA 1a-2d)ppt课件
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鲁教版英语八上《Unit 3 What were you doing when the UFO arrived》ppt课件之三
2015秋鲁教版英语八上Unit 4《An old man tried to move the mountains.》(SectionB 3a)ppt课件
2015秋鲁教版英语八上Unit 6《Have you read Treasure Island yet》(SectionB 3a-Self check)ppt课件
2015秋鲁教版英语八上Unit 4《An old man tried to move the mountains.》(SectionA Grammar-4c)ppt课件
2015秋鲁教版英语八上Unit 5《What’s the highest mountain in the world》(SectionA 1a-2d)ppt课件
2015秋鲁教版英语八上Unit 6《Have you read Treasure Island yet》(SectionB 1a-2e)ppt课件
2015秋鲁教版英语八上Unit 8《I’ve had this bike for three years》(SectionB 3a-Self check)ppt课件
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2015秋鲁教版英语八上Unit 8《I’ve had this bike for three years》(SectionB1(1a-2d)参考课件
2015秋鲁教版英语八上Unit 5《What’s the highest mountain in the world》(SectionA 3a-3c)ppt课件
2015秋鲁教版英语八上Unit 8《I’ve had this bike for three years》(SectionA Grammar-4c)ppt课件
2015秋鲁教版英语八上Unit 2《Why don’t you talk to your parents》(SectionB1 1a-2e)课件
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2015秋鲁教版英语八上Unit 8《I’ve had this bike for three years》(SectionA1 1a-2d)参考课件
鲁教版英语八上《Unit 3 What were you doing when the UFO arrived》ppt课件
2015秋鲁教版英语八上Unit 7《Have you ever been to a museum》(SectionB 1a-2e)ppt课件
2015秋鲁教版英语八上Unit 4《An old man tried to move the mountains.》(SectionA 3a-3c)ppt课件
2015秋鲁教版英语八上Unit 3《What were you doing when the rainstrom came》(SectionB 3a-Self check)ppt课件
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