演讲听写训练 1

　　So-uh- as Jim said, James Polk was the eleventh president. And, well, my report's about the next president Zachary Taylor. Taylor was elected in 1849, it's surprising because he was the first president that didn't have any previous political experience. The main reason he was chosen as a candidate was because he was a war hero. In the army, his man called him Old Rough and Ready. I guess because his rough edges. He was kind of blunt and didn't really look like a military hero. He liked to do things like wearing civilian clothes instead of uniform even in battle. And he was so short and plump that he had to be lifted up on to his horse. But he did win a lot of battles and he became more and more popular. So the Whig party decided to nominated him for the presidency even though no one knew anything about where he stood on the issues. I couldn't find much about his accomplishments probably because he was only in office about a year and half before he died. But one thing he pushed for the development of transcontinental railroad because he thought it was important form a link with the west coast. There was a lot of wealth in California and Oregon from commerce and minerals and stuff. Also he established an agricultural bureau in the department of the Interior and promoted more government aid to agriculture. Well, that's about all I found. Like I said, he died in office in 1850, so his vice president took over. And that's the next report. So thank you.

　　演讲听写训练 2

　　I want to welcome each and every balloon enthusiast in Philadelphia. Thank you for coming here this morning to commemorate the first balloon voyage in the United States. On January 9th, 1793, at 10 o'clock in the morning, a silk balloon lifted into the skies above this city, which was at that time the capital of the country. According to the original records of the flight, the voyage lasted 46 minutes, from its departure in Philadelphia to its landing across the Delaware river in New Jersey. Though our pilots today will try to approximate the original landing site, they are at the mercy of the winds. So who knows where they will drift off to. Even the balloonist in 1793 experienced some uncertain weather that day, there were clouds, fog and mist in various directions. Our reenactment promises to be nothing less than spectacular. The yellow balloon directly behind me is 5 stories high. It's inflated with helium unlike the original, which was filled with hydrogen and unbeknownst to the pilot, potentially explosive. Gas filled models are pretty uncommon now because of the extremely high cost so the 80 other balloons in today's launch are hot air, heated by propane burners. These balloons are from all over the country.

　　演讲听写训练 3

　　I'm glad you've brought up the question of our investigations into the makeup of the earth's interior. In fact since this is the topic in your reading assignment for next time, let me spend these last few minutes of class talking about it. There were several important discoveries in the early part of this century that helped geologists develop a more accurate picture of the earth's interior. The first key discovery had to do with seismic waves. Remember they are the vibrations caused by earthquakes. Well, scientists found that they travel thousands of miles through the earth's interior. This finding enabled geologists to study the inner parts of the earth. You see, the studies revealed that these vibrations were of two types: compression or P waves and shear or S waves. And researchers found that P waves travel through both liquids and solids while S waves travel only through solid matter. In 1906, a British geologist discovered that P waves slowed down at certain depth but kept traveling deeper. On the other hand, S waves either disappeared or were reflected back. So he concluded that the depth marked the boundary between a solid mantle and a liquid core. Three years later, another boundary was discovered that between the mantle and the earth's crust. There are still a lot to be learned about the earth. For instance, geologists know that the core is hot. Evidence of this is the molten lava that flows out of the volcanoes. But we are still not sure what source of the heat is.

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