High Dive kilometers up into the atmosphere.(1). No one has ever leapt from such a height - 试题答案网问答

第1题

High Dive Cheryl Sterns aims to go boldly where no human has ever gone before in a balloon

High Dive

Cheryl Sterns aims to go boldly where no human has ever gone before in a balloon: 40 kilometers up into the atmosphere. (46) No one has ever leapt from such a height or gone supersonicl without an airplane or a spacecraft. Yet Sterns, an airline pilot, is not the only person who wants to be the first to accomplish those feats. Two other brave people, an Australian man and a Frenchman, are also planning to make similar leaps.

(47) First, she’ll climb into a cabin hanging from a balloon the size of a football field2. Then balloon will take her high into the stratosphere—the layer of Earth’s atmosphere 12 to 50 kilometers above the planet. “The ascent will take two and a half to three hours,” said Sterns. “I’ll be wearing a fully pressurized, temperature-controlled space suit.”

At 40 kilometers, Sterns will be able to see the gentle curve of Earth and the blackness of space over head. Then she’ll unclip herself from the cabin and dive headfirst, like a bullet, into the atmosphere. (48)

For high dive, astronaut escape suits are a key to success. Current pilot and astronaut escape suite are guaranteed only a maximum altitude of 21 kilometers. Del Rosso, a NASA engineer of spacesuits and life-support systems, said the suit designed for Stern’s jump could serve as a model for the lethal environment of higher climbs. (49) The first hazard is oxygen-deficient air. Any person without an additional oxygen supply at 40 kilometers would die within three to five seconds. The second hazard is low atmospheric pressure. Atmospheric pressure is much lower at high altitudes than it is at sea level. The low atmospheric pressure of the upper stratosphere causes the gases in body fluids to fizz out of solution like soda bubbles. (50) Other hazards include temperatures as low as — 55 degrees Celsius, flying debris, and solar radiation.

For Sterns to survive, her spacesuit will have to protect her from all of these hazards. “A spacesuit is like a one-person spaceship,” Del Rosso explained. “You have to take everything you need in a package that’s light enough, mobile enough, and tough enough to do the job. You can’t exist without it.”

A. It will handle several major hazards.

B. Escape suits are tough enough to stand the atmospheric pressure of the upper stratosphere.

C. From there, she’ll take a death-defying leap back to Earth at supersonic speed.

D. “In 30 seconds, I’ll be going Mach (马赫) speed,” said Sterns.

E. How will Sterns make her giant jump？

F. In short, blood boils.

(46)

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第2题

听力原文：Lightning is a flow of electricity formed high above the earth.A single flash of

听力原文： Lightning is a flow of electricity formed high above the earth. A single flash of lightning 1.6 kilometers long has enough electricity to light one million light bulbs.

The American scientist and statesman, Benjamin Franklin, was the first to show the connection between electricity and lightning in 1752. In the same year he also built the first lightning rod. This device protects buildings from damage by lightning. Modern science had discovered that one lightning contains over 15 million volts. A spark between a cloud and the earth may be as long as 13 kilometers, and travel at a speed of 30 million meters per second.

Scientists estimate that there are about 2 000 million flashes of lightning per year. Lightning hits the Empire State Building in New York 30 to 48 times a year. In the United States alone it kills an average of one person every day.

The safest place to be in case of an electrical storm is in a closed car. Outside one should go to low ground and not under a tree. Also, one should stay out of water and away from metal fences. Inside a house, people should avoid opening doorways and windows and not touching wires or metal things.

29. What is the main idea of the passage？

30.How many people might be killed by lightning an average week according to the passage？

31.Which of the following is a safe place in an electrical storm？

(30)

A．Benjamin Franklin's life.

B．Lightning electricity.

C．The lightning rod.

D．The Empire State Building.

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第3题

The conquest of Distance 1 In 1848, pioneers who crossed the American continent in their

The conquest of Distance

1 In 1848, pioneers who crossed the American continent in their wagons made the trip in 109 days. Today a New York family can drive by automobile to San Francisco in less than a week or make the trip several days by train, or fly there in five hours. The transportation has conquered the vastness of the land and trought together people living thousands of kilometers apart.

2 Railroads played a major role in uniting the far reaches of the continent. In 1830 there were only 37km of railroad track in the United States. But by 1863, two companies proposed to connect the east and west coast by a railroad all the way across the continent. Advancing eastward from California, the Central Pacific pushed forward across the desert; the Central Pacific moved slowly westward over the mountain plateaus. Finally, in 1869, the tracks of the two railroads met, and the first transcontinental railroad-the first real link between east and west –was completed.

3 Although the railroads brought towns and cities together, they could not go everywhere. In many parts of America, distances are so great that automobiles are necessities, not luxuries. As we have noted, most American frmers do not live in villages but are sometimes kilometers from their nearest neighbor and even hundreds of kilometers from a town. Large-scale farming is common in many parts of the United States today, but it did not become profitable until there were trucks and tractors. Trucks and cars go wherever there is a road and the more than six million kilometers of roads bring every field and bam into the circle of civilization.

4 The family automotile has helped to bring people of the United States two other things-two things which can seldom exist at the same time:community life and the privilege of privacy. In the early days of industrialization, factory workers lived close together,within walking distance of ther jobs as industries grew,more and more working lass families lived together in crowded conditions. But with the construction of longer and better roads and with the greater availability of automobiles and other means of rapid transportation,it was no longer to live close to the factory. New residential areas, suburbs, trew up outsidethe big cities and increasingly, industry and commerce concentrated in the cities. Every morning, millions of Americans dive their automobiles to work in the city, sometimes a distance of around 100 kilometers. At night they drive home to houses and apartments outside the cities, surrounded by trees and lawns.

5 Automobies and other methods of rapid transportation are also changing American industry. Instead of continuing to concentrate in the bit cities, industry is buiding factories in previously undeveloped areas. Because the means of transportation are available, it is not hard to transport people as well as materials to the places where they are needed. This factor was largely responsible for the

A Automobiles promote farming.

B Planes bring people even closer.

C Railroads unite the whole country.

D Buiding railroads is costly.

E Transportation makes it possible for workers to move out of cities.

F People can travel all over the world.

第23题 paragraph 2

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第4题

The Conquest of Distance In 1848, pioneers who crossed the American continent in their wag

The Conquest of Distance

In 1848, pioneers who crossed the American continent in their wagons made the trip in 109 days. Today a New York family can drive by automobile to San Francisco in less than a week or make the trip in several days by train, or fly there in five hours. The transportation has conquered the vastness of the land and brought together people living thousands of kilometers apart.

Railroads played a major role in uniting the far reaches of the continent. In 1830 there were only 37 kilometers of railroad track in the United States. But by 1863, two companies proposed to connect the east and west coast by a railroad all the way across the continent. Advancing eastward from California, the Central Pacific pushed forward across the desert: the Union Pacific moved slowly westward over the mountain plateaus. Finally, in 1869, the tracks of the two railroads met, and the first transcontinental railroad—the first real link between east and west—was completed.

Although the railroads brought towns and cities together, they could not go everywhere. In many parts of America, distances are so great that automobiles are necessities, not luxuries. As we have noted, most American farmers do not live in villages but are sometimes kilometers from their nearest neighbor and even hundreds of kilometers from a town. Large-scale farming is common in many parts of the United States today, but it did not become profitable until there were trucks and tractors. Trucks and cars go wherever there is a road and the more than six million kilometers of roads bring every field and barn into the circle of civilization.

The family automobile has helped to bring people of the United States two other things— two things which can seldom exist at the same time: community life and the privilege of privacy. In the early days of industrialization, factory workers lived close together, within walking distance of their jobs. As industries grew, more and more working class families lived together in crowded conditions. But with the construction of longer and better roads and with the greater availability of automobiles and other means of rapid transportation, it was no longer to live dose to the factory. New residential areas, suburbs, grew up outside the big cities and, increasingly, industry and commerce concentrated in the cities. Every morning, millions of Americans dive their automobiles to work in the city, sometimes a distance of around 100 kilometers. At night they drive home to houses and apartments outside the cities, surrounded by trees and lawns.

Automobiles and other methods of rapid transportation are also changing American industry. Instead of continuing to concentrate in the big cities, industry is building factories in previously undeveloped areas. Because the means of transportation are available, it is not hard to transport people as well as materials to the places where they are needed. This factor was largely responsible for the remarkable growth of the Pacific Coast during and after World WarⅡ. As industries built new factories in the Far West, Americans from all over the country moved west to take advantage of new jobs and new opportunities.

The airplane, too, has played a major role in uniting Americans. Only 70 years after the Wright brothers made the first successful airplane flight, the United States had move than 277,000 kilometers of regular flight routes. People and goods can now travel to every part of the country in less time than ever before. Human beings have conquered the distances which lie between them.

A. Automobiles promote farming.

B. Planes bring people even closer.

C. Railroads unite the whole country.

D. Building railroads is costly.

E. Transportation makes it possible for workers to move out of cities.

F. People can travel all over the world.

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第5题

听力原文：Lightning is a flow of electricity formed high above the earth. A single flash of

听力原文： Lightning is a flow of electricity formed high above the earth. A single flash of lightning 1.6kilometers long has enough electricity to light one million light bulbs.

The American scientist and statesman, Benjamin Franklin, was the first to show the connection between electricity and lightning in 1752. In the same year he also built the first lightning rod. This device protects buildings from damage by lightning.

Modem science had discovered that one lightning contains over 15 million volts. A spark between a cloud and the earth may be as long as 13 kilometers, and travel at a speed of 30 mil lion meters per second.

Scientists estimate that there are about 2,000 million flashes of lightning per year. Lightning hits the Empire State Building 'hi New York J0 to 48 times a year. In the United States alone it kills an average of one person every day.

The safest place to be in case of an electrical storm is in a closed car. Outside one should go to low ground and not under a tree. Also, one should stay out of water and away from metal fences. Inside a house, people should avoid opening doorways and windows and not touch wires or metal things.

(30)

A．Benjamin Franklin's life.

B．Lightning electricity.

C．The lightning rod.

D．The Empire State Building.

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第6题

听力原文：Surtsey was born in 1963. It was a great event for scientists. They were lucky en

听力原文： Surtsey was born in 1963. It was a great event for scientists. They were lucky enough to see the birth of this volcanic island. It began at 7: 30 a.m. on 14th November. A fishing boat was sailing near Iceland. The boat moved under the captain's feet. He noticed a strange smell. He saw some black smoke. A volcano was erupting. The bottom of the grey Atlantic was open. Red-hot rocks, flames and smoke were rushing up from a split in the sea-bed. The island grew quickly. It was 10 meters high the next day and 60 meters high on 18th November. Scientists flew to Reykiavik to watch. It was very exciting. Smoke and flames were still rushing up. Pieces of red-hot rock were flying into the air and falling into the sea. The sea was boiling and there was a strange light in the sky. Surtsey grew and grew. Then it stopped in June 1967. It was 175 meters high and 2 kilometers long. And life was already coming to Surtsey. Seeds came over the sea. Plants grew. Birds came. Some scientists built a house to learn about the young island. A new island is like a new world.

(33)

A．The smoke and flames of the volcano.

B．The red hot rock that came from the volcano.

C．The middle of the earth in the sea.

D．An island near Reykiavik in Iceland.

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第7题

【T7】A. UNTIL B. GROUND C. AS A. WEREN"T DISCOVERED【T7】______THE 1930S B. A SWISS

【T7】

A. UNTIL

B. GROUND

C. AS A. WEREN"T DISCOVERED【T7】______THE 1930S

B. A SWISS WRITER WROTE THAT THE NAZCA LINES WERE DESIGNED【T8】______A LANDING PLACE FOR UFOS.

C. SEEN FROM THE【T9】______, IT LOOKS LIKE LINES SCRATCHED INTO THE EART

H. IN THE DESERT OF PERU, 300 KILOMETERS FROM LIMA, ONE OF THE MOST UNUSUAL ARTWORKS IN THE WORLD HAS MYSTIFIED(迷惑)PEOPLE FOR DECADES.【T10】______BUT FROM HIGH ABOVE, THESE MARKS ARE HUGE IMAGES OF BIRDS, FISH, SEASHELLS, ALL BEAUTIFULLY CARVED INTO THE EART

H. THE NAZCA LINES ARE SO DIFFICULT TO SEE FROM THE GROUND THAT THEY【T11】______, WHEN PILOTS SPOTTED THEM WHILE FLYING OVER THE AREA. IN ALL, THERE ARE ABOUT 70 DIFFERENT HUMAN AND ANIMAL FIGURES ON THE PLAIN, ALONG WITH 900 TRIANGLES, CIRCLES, AND LINES. RESEARCHERS HAVE FIGURED OUT THAT THE LINES ARE AT LEAST 1,500 YEARS OLD, BUT THEIR PURPOSE IS STILL A MYSTERY.【T12】______HOWEVER, IT WOULD PROBABLY BE VERY TRICKY TO FIND A SPACESHIP IN THE MIDDLE OF PICTURES OF DOGS AND MONKEYS.

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第8题

【T12】A. UNTIL B. GROUND C. AS A. WEREN"T DISCOVERED【T7】______THE 1930S B. A SWIS

【T12】

A. UNTIL

B. GROUND

C. AS A. WEREN"T DISCOVERED【T7】______THE 1930S

B. A SWISS WRITER WROTE THAT THE NAZCA LINES WERE DESIGNED【T8】______A LANDING PLACE FOR UFOS.

C. SEEN FROM THE【T9】______, IT LOOKS LIKE LINES SCRATCHED INTO THE EART

H. IN THE DESERT OF PERU, 300 KILOMETERS FROM LIMA, ONE OF THE MOST UNUSUAL ARTWORKS IN THE WORLD HAS MYSTIFIED(迷惑)PEOPLE FOR DECADES.【T10】______BUT FROM HIGH ABOVE, THESE MARKS ARE HUGE IMAGES OF BIRDS, FISH, SEASHELLS, ALL BEAUTIFULLY CARVED INTO THE EART

H. THE NAZCA LINES ARE SO DIFFICULT TO SEE FROM THE GROUND THAT THEY【T11】______, WHEN PILOTS SPOTTED THEM WHILE FLYING OVER THE AREA. IN ALL, THERE ARE ABOUT 70 DIFFERENT HUMAN AND ANIMAL FIGURES ON THE PLAIN, ALONG WITH 900 TRIANGLES, CIRCLES, AND LINES. RESEARCHERS HAVE FIGURED OUT THAT THE LINES ARE AT LEAST 1,500 YEARS OLD, BUT THEIR PURPOSE IS STILL A MYSTERY.【T12】______HOWEVER, IT WOULD PROBABLY BE VERY TRICKY TO FIND A SPACESHIP IN THE MIDDLE OF PICTURES OF DOGS AND MONKEYS.

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High Dive kilometers up into the atmosphere.（1). No one has ever leapt from such a height