高中英语人教版高二下01

[06:04.49]Reading  MAKING A DIFFERENCE
[06:09.95]It is not necessary to be a great scientist to make a difference,
[06:16.29]but there are things we can learn from the best minds in this world.
[06:22.07]Great scientists like Stephen Hawking always want to know more.
[06:28.41]They are never satisfied with a simple answer
[06:33.17]and are always looking for new questions.
[06:37.61]The Italian astronomer Galileo Galilei was so curious that he used a microscope
[06:46.15]and a telescope
[06:49.39]in order to be able to take a closer look at things both great and small.
[06:56.34]By asking why, how and what if,curious minds find new ideas and solutions.
[07:06.19]If knowledge is power,as Sir Francis Bacon wrote in 1597,
[07:13.45]then perhaps creativity can be described as the ability to use that power.
[07:20.89]Scientists must be creative and use their imagination all the time.
[07:27.76]When Zhang Heng,the Chinese astronomer and geographer,
[07:33.33]wanted to draw a map of the heavens,
[07:37.59]he was not satisfied with a simple paper map.
[07:42.34]Instead, he built a model that could move
[07:47.30]in order to show how the position of the stars changed from season to season.
[07:54.46]We must believe in what we do,even when others do not.
[08:00.31]Both Galileo and Zhang Heng
[08:04.68]found it difficult to make people believe that their theories were correct.
[08:10.84]People laughed at Zhang Heng when he first introduced his seismograph,
[08:16.90]and it was only later that the world recognised his greatness.
[08:22.83]Galileo's observations show that Copernicus,another great astronomer,
[08:29.68]was right and that the earth moves around the sun,not the other way around.
[08:36.73]At that time,the church said that the earth was the centre of the universe
[08:43.49]and Galileo was not allowed to publish or discuss his observations.
[08:49.06]Today,both Zhang Heng and Galileo are known as scientific pioneers
[08:56.71]who helped us better understand the world.
[09:00.84]Perhaps the most important thing if we want to make a difference
[09:07.11]is to find something that we like to do and that we are good at.
[09:13.27]Knowing who we are means knowing how we think and what we like to do.
[09:20.43]Everyone has his or her special skills and interests,
[09:26.67]and only by discovering what we do best
[09:30.93]can we hope to reach our goals and truly make a difference.
[09:37.41]Work Book  unit 1   Integrating skills
[09:47.44]Reading  ALBERT EINSTEIN
[09:52.20]When Stephen Hawking was writing A Brief History of Time,
[09:57.86]his editors told him that he would lose half of his readers
[10:03.19]for each equation he put in the book.
[10:07.32]Despite this warning,Hawking found it necessary to include one equation.
[10:14.30]His choice was the world's most famous equation,Albert Einstein's E = mc2.
[10:23.96]As simple as the equation may seem,
[10:28.22]it represents a theory so important
[10:33.57]that it changed science and physics completely.
[10:38.82]In fact, Einstein's discoveries made such a big difference
[10:45.49]that he felt he had to apologise to Newton.
[10:50.45]"Forgive me,"Einstein wrote, "you found the only way which,
[10:57.21]in your age,was just about possible for a man of highest thought
[11:04.06]and creative power.
[11:07.22]Einstein had replaced Newton's theories with his own
[11:13.38]and changed our understanding of the universe.
[11:18.45]Before Einstein,
[11:21.61]scientists believed that light travelled through space in a straight line.
[11:27.96]But Einstein was able to prove that light coming from the stars
[11:33.92]was bent as it passed the sun.
[11:38.17]As a result,it appeared to scientists on earth that the stars had moved.
[11:45.54]He worked out just how much the light would be bent;
[11:50.50]he could also work out how far the stars would appear to have moved.
[11:57.14]His discovery was completely new;
[12:01.50]it was said that only three people could understand it at the time.
[12:07.75]The difficulty was how he could prove his ideas to other scientists.