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题型:阅读理解 题类:常考题 难易度:普通

黑龙江省哈尔滨市第三中学2017-2018学年高二下学期英语期中考试试卷

阅读理解

    Daylight-powered germ-killing equipment(杀菌设备)may someday help protect health workers from deadly virus like Ebola virus. That is a finding from a study published in the journal Science Advances.

    Study organizers say they've developed membranes(薄膜)that produce very small amounts of hydrogen peroxide(过氧化氢)when left in daylight. Membranes are thin plastic, structures that can serve as barriers. They let some things pass through, but other things art blocked. Hydrogen peroxide, a liquid sold in drug stores, works as a disinfectant(杀菌剂).

    Nearly 500 health workers were infected and died in 2014 when Ebola spread through parts of West Africa. Caregivers wear full-body protective suits when they come into contact with patients with infectious diseases. But the process of removing the suits is a time when infection can spread if the surface is covered with virus. “If there's any live bacteria or virus on the surface, it's still transmissible and could cause infection,” said Gang Sun of the University of California. He is one of the researchers that worked to develop membranes that could cover the outside of protective equipment.

    When the chemical molecules(分子)on the surface of these membranes are put in sunlight, they react with oxygen in the air to produce small amounts of hydrogen peroxide. Gang Sun explains that the process creates less hydrogen peroxide than what you would use to remove dirt on clothing, for example. But it is still enough to kill organisms.

    Rohan Tikekar is a food scientist with the University of Maryland. He described the development as “quite novel,” or new and different, Tikekar was not involved with the recent study. He said others have developed materials that produce disinfecting chemicals. But most only work under high-energy ultraviolet(U V)light, and not usual daylight. The new membrane also works in the dark for at least an hour or two because of chemical properties that can recharge its germ-killing powers. Tikekar called that an important improvement.

    Gang Sun said the new membranes, though still Far from perfect could be used for things other than protective equipment for health workers. They could also be added to packaging for fruits and vegetables to keep foods fresher and reduce the risk of being polluted. Some versions of the material use natural chemicals' Sun says that one of the next steps is to make it safe to sat

(1)、Which of the following statements is TRUE according to the passage?
A、Daylight helps to turn thin plastic barriers into germ-killing material. B、Gang Sun developed membranes alone because he was infected with Ebola, C、Hydrogen peroxide can kill live bacteria as it is a liquid. D、The membranes react with oxygen when pat in sunlight.
(2)、What is the attitude of Rohan Tikekar towards the new finding?
A、Cautious. B、Favorable. C、Doubtful. D、Critical.
(3)、What is the last paragraph mainly about?
A、The importance of the new membranes. B、The drawback of the new membranes. C、More probable uses of the new membranes. D、More influences of the new membranes.
举一反三
阅读理解

    I was always blamed for watching too much cartoons. As I have said goodbye to my teenage, I shift to watching more movies to prove that I was a grown-up. Surprisingly, I found that movies have something in common with cartoons. They are unrealistic.

    Sometimes movies give people hope, including the hope of justice, the hope of tomorrow and almost everything else. A great number of people were once touched by certain movies. From time to time, movies try to deliver some decisive ideas to the audience. In this way, movies do cheer up many people to go on with their lives.

    It seems that there is a set formula in movies. We usually see the hero or heroine in the movies suffer a lot in the opening. Gradually and likely, the destination of them always comes to a turning point. So they have to struggle or make some important choices. Then the movie ends up with a happy finale. Or at least the hero finally manages to face his poor life with great courage somehow. However, when audience watch movies in the cinema, most of them just follow the story. Few of them may ask, “Will it happen in the real life?”

    Movies are also imitating the real life. Thus a movie, just like a novel, can never be the same as the real life. The setting of a movie is so ideal that we could hardly find it out in reality. The moviemakers just try their best to persuade the audience to believe the story is true. In a word, it is all just make-believe.

    For quite a long time, I think that the adults' world is realistic in the opposite way of the children's cartoon. However, the movies from the adult world turn out to be a made-up thing. At the very moment, I suddenly realize that movies are somewhat of the adult's fairy tales or cartoons.

    To sum up, other than false comfort such as movies and tales, we are more in need of the maturity of mind, so that we can face our lives bravely and correctly.

阅读理解

    It was almost the worst birthday of Abraham Lincoln's life.

    On February 11, 1861 (the day before he turned fifty-two), Lincoln left for Washington to become the nation's sixteenth President. As he left home in Springfield, Illinois, Lincoln handed his son Robert a black oilskin(油布) bag, and told him to keep it carefully. He did not tell Robert what was inside.

    Unknown to his seventeen-year-old son, Lincoln had placed his newly written inaugural speech in the bag. It was to be the most important speech he ever made. And it was his only copy.

When the train arrived in Indianapolis—the first stop on the long journey—Lincoln rode off in a special carriage without his family. Robert walked from the station to the local hotel.

    When Robert arrived at the hotel, he learned that his family's rooms were not ready. So he asked that the bag should be held at the front desk. Then he went off to be with friends.

    On his return, Robert found his father waiting anxiously. Where was the bag? Robert explained that he had checked it at the desk.

An angry Lincoln sped to the hall and leaped over the front desk. He began searching through a huge pile of luggage.

    As puzzled guests looked on, Lincoln dragged from the pile a familiar-looking black bag and opened it, only to find someone else's dirty clothes. It was the wrong bag. Back he went to the pile.

    At last he found the valuable bag and the speech inside. Lincoln handed it to his son and said strictly, “Now you keep it!”

    It was the one and only time, Robert said, that his father had ever lost his temper at him. But with his speech fond and his birthday yet to be celebrated, Abraham Lincoln grew cheerful. As Robert proudly recalled, “Father did not scold(责骂).”

阅读理解

    Scientists from the University of East Anglia have identified four new man-made gases that are contributing to the damage to the ozone(臭氧) layer. Two of the gases are accumulating at a rate that is causing concern among researchers.

    Worries over the growing ozone hole have seen the production of chlorofluorocarbon (CFC) gases restricted since the mid 1980s. But the precise origin of these new, similar substances remains a mystery.

    Lying in the atmosphere, the ozone layer plays a critical role in blocking harmful UV rays, which cause cancers in humans and reproductive problems in animals.

    Scientists from the British Antarctic Survey were the first to discover a huge “hole” in the ozone over Antarctica in 1985. The evidence quickly pointed to CFC gases, which were invented in the 1920s, and were widely used in refrigeration. Extraordinarily, global action was rapidly agreed to deal with CFCs and the Montreal Protocol to limit these substances came into being in 1987. A total global ban on production came into force in 2010.

    Now, the newly discovered four new gases can destroy ozone and are getting into the atmosphere from as yet unidentified sources. Three of the gases are CFCs and one is a hydrochlorofluorocarbon (HCFC), which can also damage ozone.

    The research has shown that four gases were not around in the atmosphere at all until the 1960s, which suggests they are man-made. The scientists discovered the gases by analyzing polar snow pack. Air from this snow is a natural archive of what was in the atmosphere up to 100 years ago. There searchers also looked at modern air samples, collected at remote Cape Grim in Tasmania.

    They estimate that about 74,000 tonnes of these gases have been released into the atmosphere. Two of the gases are accumulating at significant rates. However, they don't know where the new gases are being released from and this should be investigated. Possible sources include chemicals for insecticide (杀虫剂)production and solvents (溶液) for cleaning electronic components. The three CFCs are being destroyed very slowly in :the atmosphere—so even if emissions (散发)were to stop immediately, they will still be around for many decades to come.

    Of the four species identified, CFC-113a seems the most worrying as there is a very small but growing emission source somewhere, maybe from agricultural insecticides. We should find it and take it out of production.

阅读理解

    In recent decades, social isolation has been recognized as a major risk to our health and long life. It's twice as bad for you as being overweight and nearly as bad as smoking. The rising number of people who say they are affected, across a wide range of ages, is shocking. In reality, you can suffer the ill effects of loneliness even if you are not socially isolated.

Comedian Robin Williams made a striking observation in 2014: "I used to think the worst thing in life was to end up all alone. It's not. The worst thing in life is to end up with people who make you feel all alone." Tracking large groups over time indicates that perceived(感知的)social isolation carries its own risk for morbidity(发病率)and mortality.

    The perception of isolation—from others of being in the social aspect-is not only a cause of unhappiness, it also signals danger. Fish have evolved to swim to the middle of their group when predators(捕食者)approach, mice housed in social isolation show sleep disruptions and reduced slow-wave sleep and prairie voles(田鼠)isolated from their partners then placed in an open field explore their surroundings less and concentrate on avoiding predators.

    These behaviours reflect an increased emphasis on self-preservation in the social aspect. For instance, fish on the edge of a school are more likely to be attacked by predators because they are easier to isolate and prey upon. Such observations reflect a more general principle that perceived social isolation in social animals activates neural(神经系统的), neuroendocrine(神经内分泌的)and behavioural responses that promote short-term self-preservation. However, these responses bring a cost for long-term health and well-being.

    The range of harmful neural and behavioural effects of perceived isolation documented in adults include increased anxiety, hostility and social withdrawal; fragmented sleep and daytime tiredness; increased vascular resistance and changed gene expression and immunity; decreased impulse control; increased negativity and depressive symptoms; and increased age-related cognitive decline.

    Sadly, to date, attempts to reduce loneliness have met with limited success. A series of randomized controlled trials showed that they had only a small effect. Among the four types of interventions(介入)examined, talking therapy that focused on inappropriate thought processes had the largest impact. Social skills training, social support and increased opportunities for social contact were much less effective.

阅读理解

    Many of us listen to music while we work, thinking that it will help us to concentrate on the task at hand. And in fact, recent research has found that music can have beneficial effects on creativity. When it comes to other areas of performance, however, the impact of background music is more complicated.

    The idea that listening to music when working is beneficial to output probably has its roots in the so-called “Mozart effect”. Put simply, this is the finding that spatial rotation performance(空间旋转能力) is increased immediately after listening to the music of Mozart, compared to no sound at all.

    How sound affects performance has been the topic of research for over 40 years, and is observed through a phenomenon called the irrelevant sound effect. To study irrelevant sound effect, participants in the research are asked to complete a simple task which requires them to recall a series of numbers or letters in the exact order in which they saw them. The tricky thing is being able to do this while ignoring any background noise.

    Two key characteristics of the irrelevant sound effect are required for its observation. First, the task must require the person to use their rehearsal abilities(复述能力), and second, the sound must contain acoustical variation(声学变化). Where the sound does not vary much acoustically, the performance of the task is much closer to that observed in quiet conditions.

    The irrelevant sound effect itself comes from attempting to process two sources of ordered information at the same time—one from the task and one from the sound. Unfortunately, only the former is required to successfully perform the  recall task, and the effort in ensuring that irrelevant order information from the sound is not processed actually hinders(阻碍) this ability.

    A similar conflict is also seen when reading while in the presence of lyrical music. In this situation, the two sources of words—from the task and the sound—are in conflict. The cost is poorer performance of the task in the presence of music with lyrics.

    What this all means is that whether having music playing in the background helps or hinders performance depends on the task and on the type of music, and only understanding this relationship will help people maximize their productivity levels.

 阅读理解

The terraced rapeseed(油菜)flower hills of Jiangling,Wuyuan is well-known as one of the four "seas of flowers" in China,attracting thousands of plant-loving tourists to come and appreciate and photograph the vast and endless rapeseed flower fields.

"Rapeseed flowers are the messenger of spring," said Bin Zhan,manager of Jiangxi Wuyuan Tourism."Jiangling is the best place for a relaxing spring trip to enjoy the most visually impressive views of golden seas of rapeseed blossoms covering layered terrace fields."

The rapeseed blossom in the terraced fields of Jiangling,located 45 kilometres to the northeast of Wuyuan County,Jiangxi Province,reached full bloom in the second week of March.

This year,Wuyuan restores ancient farming traditions and practices to give visitors an idea or the history,culture and folk customs of the county by adding scarecrows(稻草人) in the rapeseed flower fields.The creative scarecrows of Wuyuan County are designed in the shapes of popular cartoon characters,Hui-style architecture and folk customs.They are placed in the rapeseed fields to provide more fun and interactions for visitors on flower-viewing tours.

"As flower viewing is becoming more popular in recent years,Jiangling is seeing a growing number of returning visitors,especially professional photographers who come back every year for the dramatic rapeseed blossoms," Zhan said."The blossoms only last one to two months.April is the last chance to catch a flower-viewing tour this year."

In addition to flower viewing,Wuyuan County is also home to the most well-protected ancient Hui-style architecture in China.As one of the most beautiful countryside villages in China,it attracts photographers from around the world every year to document not only the natural scenery,but also the unique farming culture and folk traditions.

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