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题型:阅读理解 题类:常考题 难易度:普通

辽宁省重点高中协作校2017-2018学年高一下学期英语期末考试试卷

阅读理解

    Below is a selection from a popular science book.

    If blood is red, why are veins(静脉)blue?

    Actually, veins are not blue at all. They are more of a clear, yellowish colour. Although blood looks red when it's outside the body, when it's sitting in a vein near the surface of the skin, it's more of a dark reddish purple colour. At the right depth, these blood-filled veins reflect less and light than the surrounding skin, making them look blue by comparison.

    Which works harder, your heart or your brain?

    That kind of depends on whether you are busy thinking or busy exercising. Your heart works up to three times harder during exercise, and shifts enough blood over a lifetime to fill a supertanker. But, in the long run, your brain probably tips it, because even when you're sitting still your brain is using twice as much energy as your heart, and it takes four to five times as much blood to feed it.

    Do old people shrink as they age?

    Yes and no. Many people do get shorter as they age. But, when they do, it isn't because they're shrinking all over. They simply lose height as their spine(脊柱)becomes shorter and more curved due to disuse and the effects of gravity(重力). Many (but not all) men and women do lose height as they get older. Men lose an average of 3-4 cm in height as they age, while women may lose 5 cm or more. If you live to be 200 years old, would you keep shrinking till you were, like 60 cm tall, like a little boy again? No, because old people don't really shrink! It is not that they are growing backwards – their legs, arms and backbones getting shorter. When they do get shorter, it's because the spine has shortened a little. Or, more often, become more bait and curved.

    Why does spinning make you dizzy(眩晕的)?

    Because your brain gets confused between what you're seeing and what you're feeling. The brain senses that you're spinning using special gravity-and-motion-sensing organs in your inner ear, which work together with your eyes to keep your vision and balance stable. But when you suddenly stop spinning the system goes out of control, and your brain thinks you're moving while you're not!

    Where do feelings and emotions come from?

    Mostly from an ancient part of the brain called the limbic system. All mammals have this brain area – from mice to dogs, cats, and humans. So all mammals feel basic emotions like fear, pain and pleasure. But since human feelings also involve other. Newer bits of the brain, we feel more complex emotions than any other animal on the planet.

    If exercise wears you out, how can it be good for you?

    Because our bodies adapt to everything we do to them. And as far as your body is concerned, it's use it, or lose it”! It's not that exercise makes you healthy; it's more that a lack of exercise leaves your body weak and easily affected by disease.

(1)、What is the colour of blood in a vein near the surface of the skin?
A、Blue. B、Light yellow. C、Red. D、Dark reddish purple.
(2)、Why do some old people look a little shrunken as they age?
A、Because their spine is in active use. B、Because they are more easily affected by gravity. C、Because they keep growing backwards. D、Because their spine becomes more bent.
(3)、Which of the following statements about our brain is true?
A、In the long run, our brain probably works harder than our heart. B、When our brain senses the spinning, we will fell dizzy. C、The brains of the other mammals are as complex as those of humans. D、Our feelings and emotions come from the most developed area in our brain.
(4)、What is the main purpose of the selection?
A、To give advice on how to stay healthy. B、To provide information about our body. C、To challenge new findings in medical research. D、To report the latest discoveries in medical science.
举一反三
阅读理解

    Today, many people use plants from other places to design their yards. Well, do they have any influence on animals living nearby? As we know, plants supply food for things like insects and plant-eating animals. In turn, birds and meat-eating animals feed on these insects and plant-eating animals. It is easy to see how important plants are.

    Although foreign plants may look beautiful, they can cause problems when there are too many of them. I live in Virginia, USA, and sometimes see a plant—commonly known as Kudzu—that seems to cover everything in the area, even climbing over whole trees and houses.

    Kudzu is an unbelievable plant since it grows very fast. It was first brought to the United States from south-east Asia around the 1870's as a crop that farmers could grow. However, Kudzu quickly came to be considered harmful throughout the southern United States.

    Since Kudzu grows fast in many different environments, it can completely cover areas of land quickly. The plant is also not eaten by any insects or birds in the United States so it can grow unchecked. Kudzu can cover trees, bushes, and even houses. It costs the United States 500 million dollars a year to just keep Kudzu from growing too fast. The plant is a perfect example of what scientists call an invasive (侵略性的) species, which grows more quickly than other native plants.

    All foreign plants have the possibility to spread quickly. Not only are they costly, but planting them in gardens actually takes away food from insects. If everyone filled their garden with plants native to where they live, many lovely butterflies and other native creatures would be attracted to their backyards! So, take a look out of your window — how does your garden grow?

阅读理解

    One of the qualities that most people admire in others is the willingness to admit one's mistakes. It is extremely hard sometimes to say a simple thing like "I was wrong about that," and it is even harder to say, "I was wrong, and you were right about that."

    I had an experience recently with someone admitting to me that he had made a mistake fifteen years ago. He told me he had been the manager of a certain store in the neighborhood where I grew up, and he asked me if I remembered the egg cartons (in many countries, eggs are sold by the dozen and are put in cartons.) Then he related an incident (event, matter) and I began to remember unclearly the incident he was describing.

    I was about eight years old at the time. I went into the store with my mother to do some shopping. On that particular day, I must have found my way to the food department where the incident took place.

    There must have been a special sale on eggs that day because there were lots of eggs in dozen and half-dozen cartons. The cartons were put three or four feet high. I must have stopped in front of the piles of egg cartons. Just then a woman came by pushing her shopping cart and knocked off the cartons. For some reason, I decided it was up to me to put the eggs back together, so I went to work.

    The manager heard the noise and came rushing over to see what had happened. When he appeared, I was on my knees looking at some of the cartons to see if any of the eggs were broken, but to him it looked as though I was the one who just did it. He severely reprimanded me and wanted me to pay for any broken eggs. I tried to explain, but it did no good. Even though I quickly forgot all about the incident, it is plain that the manager did not.

阅读短文,从每题所给的四个选项(A、B、C和D)中选出最佳选项。

    One of the hardest parts of planning a trip to Hawaii is deciding which of the major Hawaiian Islands you should visit. Each has its own personality and offers unique adventures and activities.

    Oahu

    Oahu has a bit of everything, packed in 597 square miles. You can hike into thick rainforests, and when you need a break, relax on powdery white sand beaches and stay at luxury resorts.

    Oahu has become a great destination for families. The urban core (核心) of Honolulu and Waikiki has historic sites, museums and bustling (熙熙攘攘的) and nightlife scenes. The island lives up to its nickname of the Gathering Place.

    Maui

    Maui is a great island for honeymooners. The Valley Isle has top-class resorts and golf courses, adjacent (毗邻) to some of the state's best beaches. A large dormant (休眠) volcano in east Maui at sunrise or sunset is a serene experience, as well as driving the Road to Hana, famed for its thundering waterfalls.

    Kauai

    Kauai is the oldest of the main Hawaiian Islands. The island gets a lot of rain, but that's what makes it so lively, you'll come across flowers and plants you've never seen before. For some of the best views on the island, visit Waimea Canyon, known as the Grand Canyon of the Pacific, and the Na Pali coast, boasting some of the world's highest sea cliffs.

    Big Island

    The Big Island is the only Hawaiian island still growing. Witness the power of Pele, the Hawaiian goddess of fire, wind, lightning and volcanoes with a visit to the Hawaii Volcanoes National Park. It's one of the few spots in the world where you can see lava flow. In fact, the Big Island has 10 of the world's sub-climate zones, from the snow-covered mountain of Mauna Kea, green forests of Waipio Valley to stretches of barren desert.

阅读理解

    US inventor Thomas Alva Edison once said: "Genius is one percent inspiration and 99 percent perspiration." He was not exaggerating. Perspiration, indeed, plays a very important role in Chinese scientist Tu Youyou's success.

    Tu was given the Nobel Prize in Physio logy or Medicine in 2015 for discovering a new drug for malaria, a deadly disease caused by the bite of some types of mosquito. She is the first Chinese citizen to win a Nobel Prize in science. "It is the pride of the whole Chinese science community, which will inspire more Chinese scientists," China Daily noted.

    Malaria is a disease that infects around 200 million people and k ills about half a million people each year, according to the Economist. Tu's discovery has saved millions of lives, especially in the developing world. According to the World Health Organization, by 2013 malaria deaths had fallen by 47 percent compared with 2000.

    But the road to this achievement was a tough one to travel. In the late 1960s, during the "cultural revolution" (1966-1976), Tu joined a government project on which she began research on a new malaria drug.

    In the beginning, Tu read a lot of old folk remedies(药方), searched texts that w ere hundreds or thousands of years old and traveled to remote places.

    Over several months, Tu and her team collected over 600 plants and created a list of almost 380 possible remedies.

    "This w as the most challenging stage of the project," Tu told The Beijing News. "It was a very labor-demanding and dull job, in particular when you faced one failure after another."

    But the hard work and the dullness failed to break the team's spirit. In the following months, she and her team tested the remedies on malaria- infected mice and they found that an extract(提取物)from the plant qinghao seemed to work w ell.

    Not that the work was easier after that. The fact that the extract didn't always work against malaria discouraged some of her teammates. But Tu was ambitious to make a contribution to the world and so she encouraged her teammates to keep going. They decided to start again from the beginning.

    In 1971, they were rewarded for their efforts. After nearly 200 failures, Tu finally made an extract that was 100 percent effective  against malaria parasites.The extract was called "Artemisin in"(青蒿素).

    Thanks to decades of hard work, Tu and her team had "provided humankind with powerful new means to combat these diseases that affect hundreds of millions of people every year," said the Nobel Prize Committee. "It has greatly improved human health and reduced suffering."

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