题目列表(包括答案和解析)
You never see him, but they're with you every time you fly. They record where you are going, how fast you're traveling and whether everything on your airplane is functioning normally. Their ability to endure almost any disaster makes them seem like something out of a comic book. They're known as the black box.
When planes fall from the sky, as a Yemeni airliner did on its way to Comoros Islands in the India ocean on June 30, 2009, the black box is the best bet for identifying what went wrong. So when a French submarine (潜水艇) detected the box's homing signal five days later, the discovery marked a huge step toward determining the cause of a tragedy in which 152 passengers were killed.
In 1958, Australian scientist David Warren developed a flight-memory recorder that would track basic information like altitude and direction. That was the first mode for a black box, which became a requirement on all U.S. commercial flights by 1960. Early models often failed to withstand crashes, however, so in 1965 the box was completely redesigned and moved to the rear of the plane – the area least subject to impact – from its original position in the landing wells (起落架舱). The same year, the Federal Aviation Authority required that the boxes, which were never actually black, be painted orange or yellow to aid visibility.
Modern airplanes have two black boxes: a voice recorder, which tracks pilots' conversations, and a flight-data recorder, which monitors fuel levels, engine noises and other operating functions that help investigators reconstruct the aircraft's final moments. Placed in an insulated (隔绝的) case and surrounded by a quarter-inch-thick panels of stainless steel, the boxes can stand massive force and temperatures up to 2,000℉. When submerged, they're also able to emit signals from depths of 20,000 ft. Experts believe the boxes from Air France Flight 447, which crashed near Brazil on June 1,2009, are in water nearly that deep, but statistics say they're still likely to turn up. In the approximately 20 deep-sea crashes over the past 30 years, only one plane's black boxes were never recovered.
【小题1】What does the author say about the black box?
A.It is an indispensable device on an airplane. |
B.The idea for its design comes from a comic book. |
C.Its ability to avoid disasters is incredible. |
D.It ensures the normal functioning of an airplane. |
A.witness | B.experience | C.resist | D.ensure |
A.New materials became available by that time. |
B.Too much space was needed for its installation. |
C.The early models didn't provide the needed data. |
D.The early models often got damaged in the crash. |
A.There is an urgent need for them to be reconstructed. |
B.There is still a good chance of their being recovered. |
C.They have stopped sending homing signals. |
D.They were destroyed somewhere near Brazil. |
You never see him, but they're with you every time you fly. They record where you are going, how fast you're traveling and whether everything on your airplane is functioning normally. Their ability to withstand almost any disaster makes them seem like something out of a comic book. They're known as the black box.
When planes fall from the sky, as a Yemeni airliner did on its way to Comoros Islands in the India ocean June 30, 2009, the black box is the best bet for identifying what went wrong. So when a French submarine (潜水艇) detected the device's homing signal five days later, the discovery marked a huge step toward determining the cause of a tragedy in which 152 passengers were killed.
In 1958, Australian scientist David Warren developed a flight-memory recorder that would track basic information like altitude and direction. That was the first mode for a black box, which became a requirement on all U.S. commercial flights by 1960. Early models often failed to withstand crashes, however, so in 1965 the device was completely redesigned and moved to the back of the plane – the area least subject to impact – from its original position in the landing wells (起落架舱). The same year, the Federal Aviation Authority required that the boxes, which were never actually black, be painted orange or yellow to aid visibility.
Modern airplanes have two black boxes: a voice recorder, which tracks pilots' conversations, and a flight-data recorder, which monitors fuel levels, engine noises and other operating functions that help investigators reconstruct the aircraft's final moments. Placed in an insulated (隔绝的) case and surrounded by a quarter-inch-thick panels of stainless steel, the boxes can resist massive force and temperatures up to 2,000℉. When submerged, they're also able to emit signals from depths of 20,000 ft. Experts believe the boxes from Air France Flight 447, which crashed near Brazil on June 1,2009, are in water nearly that deep, but statistics say they're still likely to turn up. In the approximately 20 deep-sea crashes over the past 30 years, only one plane's black boxes were never recovered.
What does the author say about the black box?
A. It ensures the normal functioning of an airplane.
B. The idea for its design comes from a comic book.
C. Its ability to resist disasters is incredible.
D. It is an indispensable device on an airplane.
What information could be found from the black box on the Yemeni airliner?
A. Data for analyzing the cause of the crash.
B. The total number of passengers on board.
C. The scene of the crash and extent of the damage.
D. Homing signals sent by the pilot before the crash.
Why was the black box redesigned in 1965?
A. New materials became available by that time.
B. Too much space was needed for its installation.
C. The early models often got damaged in the crash.
D. The early models didn't provide the needed data.
Why did the Federal Aviation Authority require the black boxes be painted orange or yellow?
A. To distinguish them from the colour of the plane.
B. To caution people to handle them with care.
C. To make them easily identifiable.
D. To conform to international standards.
What do we know about the black boxes from Air France Flight 447?
A. There is still a good chance of their being recovered.
B. There is an urgent need for them to be reconstructed.
C. They have stopped sending homing signals.
D. They were destroyed somewhere near Brazil.
What makes a gift special? Is it the price you see on the gift receipt(收据)? Or is it the look on the recipient's face when they receive it that determines the true value? What gift is worth the most?
This Christmas I was debating what to give my father. My dad is a hard person to buy for because he never wants anything. I pulled out my phone to read a text message from my mom saying that we were leaving for Christmas shopping for him when I came across a message on my phone that I had locked. The message was from my father. My eyes fell on a photo of a flower taken in Wyoming, and underneath a poem by William Blake. The flower, a lone dandelion(蒲公英) standing against the bright blue sky, inspired me. My dad had been reciting those words to me since I was a kid. That may even be the reason why I love writing. I decided that those words would be my gift to my father.
I called back. I told my mom to go without me and that l already created my gift. I sent the photo of the cream-colored flower to my computer and typed the poem on top of it. As I was arranging the details another poem came to mind. The poem was written by Edgar Allan Poe; My dad recited it as much as he did the other. I typed that out as well and searched online for a background to the words of it. The poem was focused around dreaming, and after searching I found the perfect picture. The image was painted with blues and greens and purples, twisting together to create the theme and wonder of a dream. As I watched both poems passing through the printer, the white paper coloring with words that shaped my childhood, I felt that this was a gift that my father would truly appreciate.
Christmas soon arrived. The minute I saw the look on my dad's face as he unwrapped those swirling (卷曲的)black letters carefully placed in a cheap frame, I knew I had given the perfect gift.
1.The idea for a special gift began to form when the author was .
A. doing shopping B. having a debate
C. leaving for Wyoming D. reading a message
2.The author's inspiration for the gift came from .
A. a photo of a flower B. a story about a kid
C. a call from the mother D. a text about Christmas
3.The underlined word "it" in Paragraph 3 refers to a poem by _ .
A. the father B. the author
C. Edgar Allan Poe D. William Blake
4.The author made the gift by .
A. searching for the poems online
B. drawing the background by hand
C. painting the letters in three colors
D. matching the words with pictures
5.What is the main purpose of the passage?
A. To show how to design images for gifts
B. To suggest making gifts from one's heart.
C. To explain how computers help create gifts
D. To describe the gifts the author has received.
第二部分阅读理解(共20小题,每小题2分,满分40分)
A
Saving the Planet with Earth-Friendly Bamboo Products
Jackie Heinricher’s love affair with bamboo started in her backyard. “As a child, I remember playing among the golden bamboo my dad had planted, and when there was a slight wind, the bamboos sounded really musical.”
A fisheries biologist, Heinricher, 47, planned to work in the salmon industry in Seattle, where she lived with her husband, Guy Thornburgh, but she found it too competitive. Then her garden gave her the idea for a business: She’d planted 20 bamboo forests on their seven-acre farm.
Heinricher started Boo-Shoot Gardens in 1998. She realized early on what is just now beginning to be known to the rest of the world. It can be used to make fishing poles, skateboards, buildings, furniture, floors, and even clothing. An added bonus: Bamboo absorbs four times as much carbon dioxide as a group of hardwood trees and releases 35 percent more oxygen.
First she had to find a way to mass-produce the plants—a tough task, since bamboo flowers create seed only once every 50 to 100 years. And dividing a bamboo plant frequently kills it.
Heinricher appealed to Randy Burr, a tissue culture expert, to help her. “People kept telling us we’d never figure it out,” says Heinricher. “Others had worked on it for 27 years! I believed in what we were doing, though, so I just kept going.”
She was right to feel a sense of urgency. Bamboo forests are being rapidly used up, and a United Nations report showed that even though bamboo is highly renewable, as many as half of the world’s species are threatened with dying out. Heinricher knew that bamboo could make a significant impact on carbon emissions (排放) and world economies, but only if huge numbers could be produced. And that’s just what she and Burr figured out after nine years of experiments—a way to grow millions of plants. By placing cuttings in test tubes with salts, vitamins, plant hormones, and seaweed gel, they got the plants to grow and then raised them in soil in greenhouses.
Not long after it, Burr’s lab hit financial difficulties. Heinricher had no experience running a tissue culture operation, but she wasn’t prepared to quit. So she bought the lab.
Today Heinricher heads up a profitable multimillion-dollar company, working on species from all over the world and selling them to wholesalers. “If you want to farm bamboo, it’s hard to do without the young plants, and that’s what we have,” she says proudly.
56. What was the main problem with planting bamboo widely?
A. They didn’t have enough young bamboo. B. They were short of money and experience.
C. They didn’t have a big enough farm to do it. D. They were not understood by other people.
57. What does Heinricher think of bamboo?
A. Renewable and acceptable B. Productive and flexible.
C. Useful and earth-friendly. D. Strong and profitable.
58. The underlined word “renewable” in Paragraph 6 probably means “________”.
A. able to be replaced naturally B. able to be raised difficultly
C. able to be shaped easily D. able to be recycled conveniently
59. What do you learn from the passage?
A. Heinricher’s love for bamboo led to her experiments in the lab.
B. Heinricher’s determination helped her to succeed in her work.
C. Heinricher struggled to prevent bamboo from disappearing.
D. Heinricher finally succeeded in realizing her childhood dream.
Online shoppers would rather receive an offer for a product or service than make their own offer 3 according to a study led by a Michigan State University scholar that has implications for the fast-growing e-commerce industry. The findings may come as a surprise given that shopping online is an anonymous(匿名的)process that seemingly can give consumers more confidence to drive a hard bargain,said Don Conlon ,Professor of Management in MSU’s Broad College of Business.
But the study found that participants who made their own offers were less successful in sealing the deal and ,when they were successful? worried they overpaid Many shoppers found the process of researching an offer to be a hassle. “ Americans are very busy,and it’s less time-consuming to be the one receiving the offer rather than the one proposing the offer ” Conlon said. u People tend to be happier when they’re in the receiver role. ”
Online spending in the United States is expected to jump 45 percent in the next four years, from $ 226 billion this year to $ 327 billion in 2017,according to Forrester Research Inc. Nevertheless, researches into this prosperous market remain largely focused on the strategies of companies, rather than those o£ shoppers. Conlon’s study is ,obviously, a rare exception.
Conlon got the idea for the study after considering the difference between two popular sites for hotels and airline flights, priceline.com, which takes bids, and hotwire.com ,which provides offers. Using these two models ,Conlon and his fellow researchers conducted a series of experiments with more than 850 people who were charged with booking a fictional hotel room and acquiring a fictional antique car. Not only did participants prefer to receive bids, Conlon said ,but they also secured more deals in that receiver role. Further ,when they had to make the bids ,they were left more mentally taxed and regretful.
From an industry perspective,putting customers in the receiver role may help fill more hotel rooms and airplane seats. “If you’re a business with a lot of products3 ” Conlon said,“you may want to be the one making the offers. ” However, when selling single items, such as an antique car, accepting bids may be a better option since that typically drives up the price, he said.
1.What can we learn from Para. 1?
A.The result of the study gives customers more confidence.
B.Scholars aren’t surprised at the findings of the study.
C.Online shoppers don’t bargain as much as expected.
D.E-commerce industry drives more hard bargains.
2.It can be concluded from Conlon’s experiments that______.
A.online shopping is time-consuming
B.given prices help promote online sales
C.online businesses provide a lot of products
D.receiving offers makes online shoppers regretful
3.The underlined word “taxed” in Para. 4 probably means______.
A.burdened B.numbed C.relieved D.challenged
4.The passage is mainly about______.
A.the big advantages of online shopping
B.the rapid development of online shopping
C.online shoppers’ preference for taking offers
D.online companies strategies to improve service
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