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A light plane flew off course. The plane carries passengers. It crashed in the mountains. Its pilot was killed.

提问人：网友tangmyself 发布时间：2022-01-07

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更多“A light plane flew off course.…”相关的问题

第1题

Please Fasten Your SeatbeltsSevere turbulence （湍流) can kill aircraft passengers. Now, in

Please Fasten Your Seatbelts

Severe turbulence (湍流) can kill aircraft passengers. Now, in test flights over the Rocky Mountains; NASA (美国航空航天局) engineers have successfully detected clear-air turbulence up to 10 seconds before an aircraft hits it.

Clear-air turbulence often catches pilots by surprise. Invisible to radar, it is difficult to forecast and can hurl (用力抛出去) passengers about the cabin. In December 1997, one passenger died and a hundred others were injured when unexpected rough air caused a United Airlines flight over the Pacific to drop 300 metres in a few seconds.

However, passengers can avoid serious injury by fastening their seatbelts. "It is the only antidote (对策) for this sort of thing," says Rod Bogue, project manager at NASA's Dryden Flight Research Center in Edwards, California.

The centre's new turbulence detector is based on lidar, or laser radar. Laser pulses are sent ahead of the plane and these are then reflected back by particles in the air. The technique depends on the Doppler effect. The wavelength of the light shifts according to the speed at which the particles are approaching. In calm air, the speed equals the plane's airspeed. But as the particles swirl (打漩) in rough air, their speed of approach increases or decreases rapidly. The rate of change in speed corresponds to the severity (激烈程度) of the turbulence.

In a series of tests that began last month, a research jet flew repeatedly. into disturbed air over the mountain ridges (山脉) near Pueblo, Colorado. The lidar detector spotted turbulence between 3 and 8 kilometres ahead, and its forecasts of strength and duration corresponded closely with the turbulence that the plane encountered.

Bogue says that he had "a comfortable amount of time" to fasten his seatbelt. The researchers are planning to improve the lidar's range with a more powerful beam. The system could be installed on commercial aircraft in the next few years.

What does "clear-air turbulence" probably mean？ (Paragraph 1)

A．A not very rough storm.

B．Unexpected disturbed air.

C．A kind of visible storm.

D．A storm over mountain ridges.

点击查看答案

第2题

12. Which one of the following sentences does NOT include sensory details？

A、The buzzing sound filled the air.

B、The soldier could hardly bear the pain of the gun wound.

C、The plane flew over the land.

D、Her perfume smelled like vanilla and lily.

点击查看答案

第3题

Please Fasten Your Seatbelts Severe turbulence （湍流) can kill aircraft passengers. Now,

Please Fasten Your Seatbelts Severe turbulence (湍流) can kill aircraft passengers. Now, in test flights over the Rocky Mountains, NASA (美国航空航天局) engineers have successfully detected clear-air turbulence up to 10 seconds before an aircraft hits it.

However, passengers can avoid serious injury by fastening their seatbelts. “It is the only antidote (对策) for this sort of things,” says Rod Bogue, project manager at NASA’s Dryden Flight Research Center in Edwards, California.

The centre’s new turbulence detector is based on lidar, or laser radar, Laser pulses are sent ahead of the plane and these are then reflected back by particles in the air. The technique depends on the Doppler effect. The wavelength of the light shifts according to the speed at which the particles are approaching. In calm air, the speed equals the plane’s airspeed. But as the particles swirl (打漩) in rough air, their speed of approach increases or decreases rapidly. The rate of change in speed corresponds to the severity (激烈程度) of the turbulence.

In a series of tests that began last month, a research jet flew repeatedly into disturbed air over the mountain ridges (山脉) near Pueblo, Colorado. The lidar detector spotted turbulence between 3 and 8 kilometres ahead, and its forecasts of strength and duration corresponded closely with the turbulence that the plane encountered.

Bogue says that he had “ a comfortable amount of time” to fasten his seatbelt. The researchers are planning to improve the lidar’s range with a more powerful beam. The system could be installed on commercial aircraft in the next few years.

第6题：What does “clear-air turbulence” probably mean？（Paragraph 1）

A．A not very rough storm.

B．Unexpected disturbed air.

C．A kind of visible storm.

D．A storm over mountain ridges.

点击查看答案

第4题

听力原文：Did your sister travel to Beijing from Wuhan by train or by plane？（4)A．She likes

听力原文：Did your sister travel to Beijing from Wuhan by train or by plane？

(4)

A．She likes planes.

B．She is in Wuhan now.

C．She flew there.

D．She likes Beijing.

点击查看答案

第5题

根据下列材料，请回答题Please Fasten Your SeatbeltsSevere turbulence （潮流 can kill aircraft

根据下列材料，请回答题

Please Fasten Your Seatbelts

Severe turbulence （潮流 can kill aircraft passengers. Now， in test flights over the Rocky Mountains， NASA （美国航空航天局）engineers have successfully detected clear-air turbulence up to 10 seconds before an aircraft hits it.

Clear-air turbulence often catches pilots by surprise. Invisible to radar， it is difficult to fore- cast and can hurl （用力抛出去） passengers about the cabin. In December 1997， one passenger died and a hundred others were injured when unexpected rough air caused a United Airlines flight over the Pacific to drop 300 meters in a few seconds.

However， passengers can avoid serious injury by fastening their seatbelts. "It is the only antidote （对策）for this sort of thing，" says Rod Bogue， project manager at NASA"s Dryden Flight Research Center in Edwards， California. The centre"s new turbulence detector is based on lidar， or laser radar. Laser pulses are sent ahead of the plane and these are then reflected back by particles in the air. The technique depends on the Doppler effect. The wavelength of the light shifts according to the speed at which the particles are approaching. In calm air， the speed equals the plane"s airspeed. But as the particles swirl （打漩） in rough air， their speed of approach increases or decreases rapidly. The rate of change in speed corresponds to the severity （激烈程度）of the turbulence.

In a series of tests that began last month， a research jet flew repeatedly into disturbed air over the mountain ridges （山脉） near Pueblo， Colorado. The lidar detector spotted turbulence between 3 and 8 kilometers ahead， and its forecasts of strength and duration corresponded closely with the turbulence that the plane encountered.

Bogue says that he had "a comfortable amount of time" to fasten his seatbelt. The researchers are planning to improve the lidar"s range with a more powerful beam. The system could be installed on commercial aircraft in the next few years.

What does "clear-air turbulence" in Paragraph 1 probably mean？查看材料

A.A not very rough storm.

B.Unexpected disturbed air.

C.A kind of visible storm.

D.A storm over mountain ridges.

点击查看答案

第6题

Part ADirections: Read the following three texts. Answer the questions on each text by cho

Part A

Directions: Read the following three texts. Answer the questions on each text by choosing A, B, C or D. Mark your answers on ANSWER SHEET 1.

"I ask you to drink to his health as a young man full the spirit of adventure who has lit up the world with a flash of courage." With these words, the British Minister of Air turned and raised his glass to the young man who sat beside him—a young man who, only a month before, was completely unknown. Yet, on that summer day in 1927 his name was on the world's lips — Charles Lindbergh, the first man to fly the Atlantic alone.

He had been an air mail pilot, flying back and forth between Chicago and the city of St. Louis. Determined to win the ＄25,000 prize offered by a fellow American for the first flight from New York to Paris, Lindbergh had persuaded a group of St. Louis businessmen to finance the building of a special plane for him.

The news that Lindbergh intended to fly the Atlantic alone was received with disbelief. The plane would never fly, people said. It would run out of fuel. It had only a single engine. Lloyds of London refused to insure the flight. Men called Lindbergh the "flying fool".

But on May 20th, 1927, just after ten to eight in the morning, Lindbergh's "Spirit of St. Louis", heavily laden with fuel, struggled into the air from a New York airfield. For several hours the weight of the petrol prevented the young pilot from flying more than a few feet above the wavetops. Night came and thick fog covered up the stars. Lindbergh flew steadily on, hoping that his course was the right one. He struggled to keep awake, checking the fuel all the time to keep his mind active. Through the next day the "Spirit of St. Louis" flew on over the seemingly limitless sea. Then a fishing boat appeared, and, an hour later, land. It was Ireland. Lindbergh set a compass course for Paris.

By ten o'clock the lights of France's capital were shining beneath him. Tired, unshaved, suddenly hungry, the "flying fool" came to Le Bourget airport, and landed in front of a huge crowd of wildly cheering people. After 34 hours of continuous piloting, the flight of 3,600 miles was over.

Lindbergh was ______ by the British Minister of Air at the celebrating party.

A．warmly welcomed

B．made famous for his courage

C．helped to wine

D．congratulated on his success

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第7题

To the commander's great surprise, the helicoptera light plane and both pilots were killed

To the commander's great surprise, the helicopter a light plane and both pilots were killed.

A．coincided with

B．stumbled on

C．tumbled to

D．collided to

点击查看答案

第8题

"I ask you to drink to his health as a young man full of the spirit of adve

nture who has lit up the world with a flash of courage. "With these words, the British Minister of Air turned and raised his glass to the young man who sat beside him-a young man who, only a month before, was completely unknown. Yet on that summer day in 1927 his name was on the world's lips-Charles Lindbergh, the first man to fly the Atlantic alone.

He had been an air mail pilot, flying back and forth between Chicago and the city of St. Louis. Determined to win the $5, 000 prize offered by a fellow American for the first flight form. New York to Paris, Lindbergh had persuaded a group of St. Louis businessmen to finance the building of a special plane for him.

But on May 20th, 1927, just after ten to eight in the morning, Lindbergh's "Spirit of St. Louis", heavily laden with fuel, struggled into the air from a New York airfield. For several hours the weight of the petrol prevented the young pilot from flying more than a few feet above the wave-tops. Night came and thick fog covered up the stars. Lindbergh flew steadily on, hoping that his course was the right one. He struggled to keep awake, checking the fuel all the time to keep his mind active. Throughout the next day the "Spirit of St. Louis" flew on over the seemingly limitless sea. Then a fishing boat appeared, and, an hour later, land. It was Ireland. Lindbergh set a compass course for Paris.

By ten o'clock the lights of France's capital were shining beneath him. Tired, unshaved, suddenly hungry, the "flying fool" came down to Le Bourget airport, and landed in front of a huge crowd of wildly cheering people. After 34 hours of continuous piloting, the flight of 3, 600 miles was over.

1. The British Minister of Air _____.

A. praised Lindbergh for his intelligence

B. encouraged Lindbergh to be more adventurous

C. congratulated Lindbergh for his bravery

D. warned Lindbergh not to fly alone

2. "… his name was on the world's lips"means _____.

A. "Everybody was drinking to his health"

B. "Everybody was jumping about because of him"

C. "He became suddenly unpopular"

D. "Everybody was talking about him"

3. A group of St. Louis businessmen had been persuaded to _____ the building of a special plane.

A. arrange