安徽科技学院：《大学英语读写》课程教学资源（PPT课件，四级）Unit 3Why Do We Believe That the Earth Is Round?

How to Solve the Energy Crisis The modern world gets most of its energy needs from coal,oil and natural gas.These sources have one thing in common:once they have been taken from the depths of the earth, they can never be replaced.Naturally,their reserves tend to be on the decrease.However, as economies develop,the world demand for energy is growing enormously day by day.It is quite obvious,therefore,that we are threatened with the approach of the energy crisis

How to Solve the Energy Crisis The modern world gets most of its energy needs from coal, oil and natural gas. These sources have one thing in common: once they have been taken from the depths of the earth, they can never be replaced. Naturally, their reserves tend to be on the decrease. However, as economies develop, the world demand for energy is growing enormously day by day. It is quite obvious, therefore, that we are threatened with the approach of the energy crisis

What,then,can we do to prevent energy crisis?The answer lies partly in practicing conversation of resources.Large amounts of energy are being wasted in all sections of the modern society so that the present major energy sources will be used up much sooner than expected.If we heighten our awareness of the urgent need to conserve energy,howeyer we will be able to make the sources last a lot longer

What, then, can we do to prevent energy crisis? The answer lies partly in practicing conversation of resources. Large amounts of energy are being wasted in all sections of the modern society so that the present major energy sources will be used up much sooner than expected. If we heighten our awareness of the urgent need to conserve energy, however, we will be able to make the sources last a lot longer

Of course,conservation is not the perfect solution to the energy problem.Eventually, sources like coal and oil will be exhausted.But there are many other energy sources that can be used in place of them,such as the nuclear power,wind energy and solar energy and so forth.Scientists are now doing their best to develop new sources of energy,which is our hope for the future.We are convinced that so long as both solutions are applied energy crisis can be prevented

Of course, conservation is not the perfect solution to the energy problem. Eventually, sources like coal and oil will be exhausted. But there are many other energy sources that can be used in place of them, such as the nuclear power, wind energy and solar energy and so forth. Scientists are now doing their best to develop new sources of energy, which is our hope for the future. We are convinced that so long as both solutions are applied energy crisis can be prevented

Unit3 Why Do We Believe That the Earth Is Round? Data SIO.NO A.U.S.Navy,NGA.GEBCO 北钻18165431东经84584017高度2057米

Unit3 Why Do We Believe That the Earth Is Round?

Critical,original,analytical Is there any space for one to think independently in this time when we are ceaselessly bombarded with floods of information?After having been slaves to money and power,we are becoming slaves to information.What we say are the conventional verbal phrases;what we write is the content copied or downloaded from the Internet;is there any manifestation of individuality?How terrible!

Critical, original, analytical Is there any space for one to think independently in this time when we are ceaselessly bombarded with floods of information? After having been slaves to money and power, we are becoming slaves to information. What we say are the conventional verbal phrases; what we write is the content copied or downloaded from the Internet; is there any manifestation of individuality? How terrible!

If one can not think by himself,he will become slavishly dependent on others, parroting what others say.If the people in a nation can't think or are too lazy to think. what they can do is merely following others'steps and fall behind. 0ct.28,2010

If one can not think by himself, he will become slavishly dependent on others, parroting what others say. If the people in a nation can’t think or are too lazy to think, what they can do is merely following others’ steps and fall behind. Oct. 28, 2010

Speaking Practice Listening Comprehension Reading Comprehension Detailed Explanation Conclusion Homework

Speaking Practice Listening Comprehension Reading Comprehension Detailed Explanation Conclusion Homework

太 阳系 而我们是太阳系的一份子 海王星 ,吴王星 天王星。 土星 木星 月球 星 地球 金星 小行星环带 水星Mercury金星Venus地球Earth火星Mars木星Jupiter 土星Saturn天王星Uranus海王星Neptune冥王星Pluto 彗星comet小行星asteroid小行星环带Asteroids band

水星Mercury 金星Venus 地球Earth 火星Mars 木星Jupiter 土星Saturn 天王星Uranus 海王星Neptune 冥王星Pluto 彗星comet小行星asteroid小行星环带Asteroids band

1)How did people think of the shape of the earth in history? 2)What do you think is the shape of the earth?Can you give any evidence to support your view? 3)Where do you get most of your knowledge,from experiments or from books? 4)Do you think everything in books worth believing?Did you ever question the book knowledge?Why or why not?

• 1) How did people think of the shape of the earth in history? • 2) What do you think is the shape of the earth? Can you give any evidence to support your view? • 3) Where do you get most of your knowledge, from experiments or from books? • 4) Do you think everything in books worth believing? Did you ever question the book knowledge? Why or why not?

oibis Ge Orwell,George (1903~1950),pseudonym of Eric Arthur Blair,British novelist and essayist, whose_brilliant reporting and political conscience fashioned an impassioned hicture of his life and times.His best-know Animal Farm (1945)and Ninete (1949).Throughout his career a stresses the importance of truth and the need to be willing to qu trustworthiness of those from wh opinions and beliefs

George Orwell Orwell, George (1903~1950), pseudonym of Eric Arthur Blair, British novelist and essayist, whose ________reporting and political conscience fashioned an impassioned picture of his life and times. His best-known novels are Animal Farm (1945) and Nineteen Eighty-Four (1949). Throughout his career as a writer, Orwell _______the importance of truth and_______, and the need to be willing to question the ____________of those from whom we take our opinions and beliefs. brilliant stresses objectivity trustworthiness