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题型:阅读理解 题类:常考题 难易度:普通

广西梧州岑溪市2017-2018学年高二下学期英语期末考试试卷

阅读理解

    Gravity signals that race through the ground at the speed of light could help seismologists(地震学家) get a better handle on the size of large, destructive quakes soon after they hit,a study suggests. The tiny changes in Earth's gravitational field, created when the ground shifts, arrive at earthquake monitoring stations well before earthquake waves.

    “The good thing we can do with these signals is have quick information on the magnitude (震级) of the quake,” says Martin Vaillée, a seismologist at the Paris Institute of Earth Physics.

    Earthquake equipment in China and South Korea picked up gravity signals immediately after the magnitude-9. 1 Tohoku earthquake that destroyed parts of Japan in 2011. The signals appear as tiny accelerations on earthquake-recording equipment, more than a minute before the seismic waves show up.

    “We can look before the earthquake waves arrive,” says Vallée. “If we see nothing, we can say that the quake that made these was maybe large, but not huge. If we see the signals, it means we really have a very big quake. ”

    Had seismologists been monitoring for gravity changes, they might have realized sooner just how big the Tohoku earthquake was. A small increase in an earthquake's magnitude means a large change in the energy released by the quake-and the destruction expected. That information is important for emergency responders as they decide what resources to arrange.

    It'll be a major contribution if gravitational waves can beat down the time needed to know that a big earthquake is big. But much work remains before gravity signals can be considered a reliable tool in the vital minutes after a big quake. A few extra minutes of warning can save lives, particularly in coastal areas where people can flee ahead of an incoming tsunami.

(1)、What can be judged if gravity signals appear on the equipment?
A、When earthquakes will take place. B、When a terrible tsunami is coming C、What degree an earthquake reaches. D、How quickly a huge earthquake spreads.
(2)、How is the study of gravity signals progressing?
A、It's already been used to predict quakes. B、It is not getting along quite well. C、It is gating on smoothly. D、It needs further research,
(3)、What is the practical benefit of this discovery?
A、Predicting earthquakes successfully. B、Offering a longer time to save lives. C、Letting scientists better know earthquakes. D、Replacing the present earthquake prediction.
(4)、Which of following can be the best title for the text?
A、Gravity signals could speedily warn of huge quakes B、Scientists have more than one way to forecast quakes. C、Human beings are no longer afraid of huge quakes. D、Advanced technology could prevent huge quakes.
举一反三
阅读理解

"Mum, what does it mean when someone tells you that they have a skeleton(骨骼) in the closet?" Jessica asked. "A skeleton in the closet?" her mother paused thoughtfully. "Well, it's something that you would rather not have anyone else know about. For example, if in the past, someone in Dad's family had been arrested for stealing a horse, it would be 'a skeleton in his family's closet'. He really wouldn't want any neighbor to know about it."

"Why pick on my family?" Jessica's father said with anger. "Your family history isn't so good. you know. Wasn't your great-great-grandfather a prisoner who was transported to Australia for his crimes?" "Yes, but people these days say that you are not a real Australian unless your ancestors arrived as prisoners ." "Gosh, sorry I asked, I think I understand now," Jessica cut in before things grew worse.

    After dinner, the house was very quiet. Jessica's parents were still quite angry with each other. Her mother was ironing clothes and every now and then she glared at her husband, who hid behind his newspaper pretending to read. When she finished, she gathered the freshly pressed clothes in her arms and walked to Jessica's closet. Just as she opened the door and reached in to hang a skirt, a bony arm stuck out from the dark depths and a bundle of white bones fell to the floor. Jessica's mother sank into a faint(晕倒), waking only when Jessica put a cold, wet cloth on her forehead.  She looked up to see the worried faces of her husband and daughter.

"What happened?Where am I?" she asked. "You just destroyed the school's skeleton, Mum," explained Jessica. "I brought it home to help me with my health project, I meant to tell you, but it seemed that as soon as I mentioned skeletons and closets, it caused a problem between you and Dad." Jessica looked in amazement as her parents began to laugh madly. "they're both crazy," she thought.

阅读理解

    Mary bought a dress in a women's clothing store.She felt very happy about buying the dress until she got home. Then she remembered she had left her purse at the store.It was the third time that month that Mary had forgotten something important.Mary was angry with herself.She said,“Am I losing it?”

    Emma was teaching a class in mathematics at a college.She began to explain to the students how to solve a very difficult problem.She understood it very well.But somehow,at that moment,she could not explain it.Emma said,“I must be losing it.”

    Americans seem to have a lot of concern about losing it.At least that is what you would think from hearing them talk.They use the expression when they feel they are losing control.It can mean losing emotional control.Or losing the ability to do something.Or losing intelligence.

    Word experts differ about how the expression started.Some believe it came from television programs popular in the 1980s.Others believe it began with psychologists,who deal with how people think,feel and act.

    “We Americans have many concerns about controlling our lives.Perhaps we worry too much,”one psychologist said.“In many situations to say you are losing it eases the tension(不安).”

    It's healthy.And most people who say they are having a problem are not losing it.

    People may feel more like they are losing it when they are “down in the dumps”.Word expert Charles Funk says people have been feeling down in the dumps for more than 400 years.The word dumps probably comes from Northern European countries.The languages of Denmark and Norway both have similar words.The words mean to fall suddenly.Americans borrowed this saying.And,over the years,it has become a popular way of expressing sadness.

阅读短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。

    In the first year or so of Web business, most of the action has revolved around efforts to tap the consumer market. More recently, as the Web proved to be more than a fashion, companies have started to buy and sell products and services with one another. Such business-to-business sales make sense because business people typically know what product they are looking for.

    However, many companies still hesitate to use the Web because of doubts about its reliability. "Businesses need to feel they can trust the pathway between them and the suppliers," says senior analyst Blane Erwin of Forrester Research. Some companies are limiting the risk by conducting online transactions only with established business partners who are given access to the company's private Internet.

    Another major shift in the model for Internet commerce concerns the technology available for marketing. Until recently, Internet marketing activities have focused on strategies to "pull" customers to sites. In the past year, however, software companies have developed tools that allow companies to "push" information directly onto consumers. Companies such as Virtual Vineyards are already starting to use similar technologies to push messages to customers about special sales, product offerings, or other events. But push technology has earned the contempt of many Web users. Online culture thinks highly of the notion that the information flowing onto the screen comes there by specific request. Once commercial promotion begins to fill the screen uninvited, the distinction between the Web and television fades. That's a prospect that horrifies Net purists.

    But it is nearly inevitable that companies on the Web will need to resort to past strategies to make money. A Web site selling the right kind of products with the right mix of interactivity, hospitality, and security will attract online customers. And the cost of computing power continues to free fall, which is a good sign for any enterprises setting up shop in silicon. People looking back 5 or 10 years from now may well wonder why so few companies took the online plunge.

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