提高聽力同時(shí),你還可以了解到美國歷史上的一些重要事件。請感興趣的你一聽為快吧!

<注意>國家大寫
hints:
Alexander Graham Bell;Thomas Edison; George Eastman;
The United States changed after the Civil War. The frontier became less wild. Cities grew in size and number. More factories, steel mills, and railroads were built. Immigrants arrived in the United States with dreams of better lives. This was the age of inventions. Alexander Graham Bell developed the telephone. Thomas Edison invented the light bulb. George Eastman made the moving picture, later called a movie. Before 1860, the government issued 36,000 patents. From 1860 to 1890, the government issued 440,000. Separate companies merged to become larger companies, sometimes called trusts. This happened especially in the steel, rail, oil, and communications industries. With fewer companies, buyers had fewer choices and businesses had more power. An antitrust law was passed in 1890 to stop monopolies, but it was not very effective.
美國在南北戰(zhàn)爭后改變。邊境開發(fā)的很少。城市的規(guī)模和數(shù)量在增長。更多的工廠,鋼廠,鐵路建成。移民者呆著更好的生活的夢想來到美國。這是發(fā)明創(chuàng)造的年代。亞歷山大格雷厄姆貝爾發(fā)明了電話。托馬斯愛迪生發(fā)明了燈泡。喬治伊士曼??發(fā)明動(dòng)人的畫面,后來被稱為電影。在1860年之前,政府發(fā)出36000項(xiàng)專利。從1860年到1890年,政府發(fā)出了44萬。獨(dú)立的公司合并成為規(guī)模較大的公司,有時(shí)也被稱為信任。這尤其發(fā)生在鋼鐵,鐵路,石油,和通信行業(yè)。隨著公司越來越少,購房者選擇減少和企業(yè)有更多的權(quán)力。反托拉斯法是在1890年通過為了停止壟斷,但它不是很有效。