题型:阅读理解 题类:常考题 难易度:普通
人教版(新课程标准)高中英语必修五Unit 1 Great scientists Grammar
In 1905, as part of his special theory of relativity, Albert Einstein published the point that a large amount of energy could be released from a small amount of matter. This was expressed by equation E=mc2 (energy equals mass times the speed of light squared). But bombs were not what Einstein had in mind when he published this equation.
In 1929, he publicly declared that if a war broke out he would "refuse to do war service, direct or indirect…" His position would change in 1933, as the result of Adolf Hitler's coming into power in Germany.
Einstein's greatest role in the invention of the atom bomb was signing a letter to President Franklin Roosevelt urging that the bomb be built because some physicists feared that Germany might be working on an atom bomb. Among those concerned were physicists Leo Szilard and Eugene Wigner. But Szilard and Wigner had no influence on those in power. So in July 1939 they explained the problem to someone who did: Albert Einstein. After talking with Einstein, in August 1939 Szilard wrote a letter to President Roosevelt with Einstein's signature on it, which was delivered to Roosevelt in October 1939.
Germany had invaded Poland the previous month; the time was ripe for action. That October the research of A-bomb began but proceeded slowly because the invention of the atom bomb seemed distant and unlikely. In April 1940 an Einstein letter, ghostwritten by Szilard, pressed the researchers on the need for "greater speed".
As the realization of nuclear weapons grew near, Einstein looked beyond the current war to future problems that such weapons could bring. He wrote to his friend about his fear about the future use of the A-bomb.
The atom bombings of Japan occurred three months after Germany gave in.
In November 1954, five months before his death, Einstein summarized his feelings about his role in the creation of the atom bomb: "I made one great mistake in my life…when I signed a letter to President Roosevelt recommending that atom bombs be made; but there was some justification—the danger that the Germans would make them."
Chinese New Year for Kids
Chinese New Year for Kids is a full color paperback book with beautiful Chinese illustrations (插图). This is a hands-on workbook for parents and teachers, written for children from ages 3 to 12 years old, for use in the classroom or at home. Music, physical movement, art, and food all add to the atmosphere of taking an imaginary trip to China during the Chinese New Year.
Author: Cindy Roberts |
Date: 2002-10-01 |
List Price: $ 9.95 |
Price: $ 8.95 Buy it On Amazon.com |
The Polar Express
One couldn't select a more delightful and exciting premise (前提) for a children's book than the tale of a young boy lying awake on Christmas Eve only to have Santa Claus sweep by and take him on a trip with other children to the North Pole. And one couldn't ask for a more talented artist and writer to tell the story than Chris Van Allsburg.
Author: Chris Van Allsburg |
Date: 1985-10-28 |
List Price: $18.95 |
Price: $ 12.89 Buy it On Amazon.com |
The Secret of Saying Thanks
Perhaps you'd like to know a secret, one of the happiest ones of all. You'll discover it all on your own, maybe when you least expect. If you've not yet discovered the secret of saying thanks, it's waiting for you. The secret can be found in the sunrise that offers promises for the day ahead, or in the gentle shade of a tree sheltering you from the hot rays of the sun.
Author: Douglas Wood |
Date: 2005-9-27 |
List Price: $ 16.95 |
Price: $ 11.53 Buy it On Amazon.com |
The Runaway Pumpkin
When Buck, Billy and their little sister Lily spy the biggest pumpkin they've ever seen, they can't resist (抵制). Buck and Billy try to roll the pumpkin down the hill to show everyone, but it's too big! Before they know it, it's rolling out of control down the hillside. It knocks over Gran dpa Baxter and makes him think of pumpkin soup. And when Poppa Baxter finally stops, all he can think of is pumpkin bread.
Author: Kevin Lewis |
Date: 2003-09-01 |
List Price: $ 15.95 |
Price: $ 6.38 Buy it On Amazon.com |
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