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The iron and steel industry ___________ （起着重要的作用) in our national economy.
The iron and steel industry ___________ (起着重要的作用) in our national economy.
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The iron and steel industry ___________ (起着重要的作用) in our national economy.
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更多“The iron and steel industry __…”相关的问题
Steel is an alloy composed primarily of iron and carbon.
A．traditionally
B．ironically
C．carefully
D．principally
The furnace that Bessemer used to process iron into steel was called a ______.
A．heater
B．steamer
C．converter
D．shower
It is very common for fireworks to contain aluminum, iron, steel, zinc or magnesium dust.
A．Y
B．N
C．NG
Steel is an alloy composed primarily of iron and carbon.
A. traditionally
B. ironically
C. carefully
D. principally
Pistons for modern engines are made of _______.
A cast iron
B steel
C aluminum-alloy
D tin-alloy
A．It directed air at melted iron in a furnace, removing all impurities.
B．It slowly heated iron ore, then stirred it and heated it again.
C．It changed iron ore into iron, which was a substitute for' steel.
D．It could quickly find deposits of iron ore under the ground.
Then the inventor Henry Bessemer discovered that directing a blast of air at melted iron in a furnace would burn out the impurities that made the iron brittle (易碎的). As the air shot through the furnace, the bubbling metal would erupt in showers of sparks. When the fire cooled, the metal had been changed, or converted, to steel. The Bessemer Converter made possible the mass production of steel. Now three to five tons of iron could be changed into steel in a mater of minutes.
Just when the demand for more and more steel developed, prospectors, discovered huge new deposits of iron ore in the Mesabi Range, a 120-mile-long region in Minnesota near Lake Superior. The Mesabi deposits were so near the surface that they could be mined with steam shovels.
Barges and steamers carded the iron ore through Lake Superior to depots (车站) on the southern shores of Lake Michigan and Lake Erie. With dizzying speed, Gary, Indiana, and Toledo, Youngstown, and Cleveland, Ohio, became major steel-manufacturing centers. Pittsburgh was the greatest steel city of all.
Steel was the basic building material of the industrial age. Production skyrocketed from seventy-seven thousand tons in 1870 to over eleven million tons in 1900.
According to the passage, the railroad industry preferred steel to iron because steel was ______.
A．cheaper and more plentiful
B．lighter, and easier to mold
C．cleaner, and easier to mine
D．stronger and more durable
Andrew Carnegie
Born in Scotland, in 1835, Andrew Carnegie entered the world in poverty. Carnegie's father came to America when Andrew was twelve, and his brother, Thomas, was five. Arriving in New York in 1848, the Carnegies settled in Allegheny City, Pennsylvania Allegheny City provided Carnegie's first job, as a bobbin boy in a cotton factory, working for $1.20 a week. At 15, Carnegie became a telegraph messenger boy in Pittsburgh. Carnegie's next job was as a railroad clerk, working for the Pennsylvania Railroad. He worked his way up the ladder, through his dedication and honest desire to succeed, to become train dispatcher and then division manager. At this time, young Carnegie, age 24, had already made some small investments that laid the foundations of his what would be tremendous fortune. One of these investments was the purchase of stock in the Woodruff Sleeping Car Company.
In 1864, Carnegie entered the iron business, but did not begin to make steel until years later. In 1873, he built the Edgar Thomson works in Braddock, Pennsylvania, to make Bessemer steel. He established many other steel plants, and in 1892, he merged all of his interests into the Carnegie Steel Company. This act from Carnegie is fitting with one of his most famous quotations, "Put all of your eggs in one basket, and then watch that basket." This firm became one of the greatest industrial enterprises in America. Carnegie later sold it to J. P. Morgan's United States Steel Corporation in 1901 for $ 400 million, which would be a little over $4 billion today!
After retiring, Carnegie's fortune was estimated to be as large as half a billion dollars. From that time on, with the philosophy that the rich have a moral obligation to give away their money, he devoted himself to philanthropy. Although ironic, this man of great fortune strongly believed in the merits of poverty for the development of character and work ethic, and determined that wealthy men should not leave their fortunes to their children, but should give it away, claiming "The man who dies thus rich, dies disgraced." With the picture of community service, Carnegie is quoted as saying, "Pittsburgh entered the core of my heart when I was a boy, and cannot be torn out. I can never be one hair's breadth less loyal to her, or less anxious to help her in any way, than I have been since I could help anything. My treasure is still with you, and how best to serve Pittsburgh is the question which occurs to me almost every day of my life."
Andrew Carnegie was
A．an American by origin.
B．an Irishman by origin.
C．a Scotsman by origin.
D．a German by origin.
In January 2002, during the first weeks of a six-month stay at the Children's Hospital of Philadelphia for leukemia (白血病) treatment, Michael wandered over to his hospital window in search of relaxation. The 【B1】 first-grade watched a construction crew 【B2】 on a 10-story addition to the hospital. 【B3】 Michael's third-floor window, Ritchie, an iron-worker from the East Falls section of Philadelphia, 【B4】 and saw "this kid with no hair 【B5】 face was pressed up to the window. I waved, and he smiled and 【B6】 . I'll never forget that," says Ritchie, a father of three.
As winter 【B7】 spring, Michael watched, fascinated (着迷), as 3 000 tons of steel 【B8】 formed the skeleton of the building. One day he colored a message for the crew and held 【B9】 up to the window: Hi, Local Iron Workers. I'm Mike. Ritchie and the 【B10】 crew messaged back. Over the 【B11】 months, as his treatment continued, Ritchie and the crew 【B12】 Michael up and cheered him with 【B13】 signs like Be Strong Mike. 【B14】 the construction reached the third floor, Ritchie jumped across the 【B15】 between the buildings and the two had a 【B16】 chat. The hard hat with the tender heart wells up (涌出眼泪) when he thinks about it. "Michael 【B17】 my life," says Ritchie. "I was a real hardcore (顽固不化的) person without a lot of sympathy. But I'd 【B18】 seeing this kid every day waving at me and excited about the construction. I look at life 【B19】 thanks to him." Today Michael is a 10-year-old third-grader in complete recovery. What does he hope to 【B20】 when he grows up？ "A construction worker," he says.
