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题型:阅读理解 题类:常考题 难易度:普通

安徽省亳州市2018届高三上学期英语期末质量检测试卷

阅读理解

    Dry Ice is a unique substance which has many uses. Essentially, dry ice is frozen CO2. The first report of what we now call dry ice came from the French chemist Charles Thilorier in 1834. In 1924, the Drylee Corporation of America named the solid form of CO2 as "Dry Ice", which is what it is popularly called today.

    At normal atmospheric pressure, CO2changes directly from solid to gas. It skips the liquid phase(阶段)which makes regular ice wet. Frozen CO2is also much colder than regular ice. But regular ice freezes at 32 degrees Fahrenheit, CO2 changes from gas to solid at -109.3 degrees Fahrenheit. This extremely cold temperature makes it very dangerous to handle with bare hands. It can cause frostbite in a very short period of time.

    Dry ice has been used for a variety of purposes throughout the past century. Its primary use is to refrigerate food when electrical refrigeration isn't available. Through the process of sublimation (when CO2 changes from solid to gas), it can maintain cold food for a long time.

    If you've ever been to a play and seen heavy fog on the ground, it is likely that you have seen dry ice in action. This effect can be achieved because CO2 is heavier than air, so evaporated (挥发的)CO2 will sink and accumulate on the ground.

    Another interesting use for this substance is to bait(诱杀)insects like mosquitoes. These insects have sensors which guide them to CO2. They find the high concentration of CO2 in dry ice quite attractive.

    Mars has long been a mystery for human beings. We have been looking for evidence of life on Mars. In the 1960s scientists guessed that the polar ice cap of Mars was made of frozen CO2. More recent observations have shown that while the topmost layer consists of frozen CO2, the most of it is probably regular frozen water.

(1)、Frozen CO2 gets its name of "Dry Ice" mainly because      .
A、it is very easy to make it dry B、we can't melt it and it doesn't get wet C、it looks like ice at a low temperature D、it is solid like ice at -109.3 degrees Fahrenheit
(2)、The underlined word "frostbite" in the second paragraph probably means      .
A、the shakes caused by cold B、damage caused by freezing C、a fever caused by being cold D、a sharp pain caused by bums
(3)、According to the passage, dry ice can be used to      .
A、freeze most of food in the next century B、increase the production of farming C、make a vivid fog effect on stages D、help to improve the environment
(4)、What does the last paragraph mainly tell us?
A、Dry ice on Mars is near the polar. B、Not much dry ice has been found on Mars. C、The polar ice cap of Mars is unique. D、No frozen CO, on Mars can be melt.
举一反三
阅读理解

    Why do Americans struggle with watching their weight, while the French, who eat rich food, continue to stay thin? Now a research by Cornell University suggests how life style and decisions about eating may affect weight. Researchers concluded that the French tend to stop eating when they feel full. However, Americans tend to stop when their plate is empty or their favorite TV show is over.

    According to Dr. Joseph Mercola, a health expert, the French see eating as an important part of their life style. They enjoy food and therefore spend a fairly long time at the table, while Americans see eating as something to be squeezed (挤进) between the other daily activities. Mercola believes Americans lose the ability to sense when they are actually full. So they keep eating long after the French would have stopped. In addition, he points out that Americans drive to huge supermarkets to buy canned and frozen foods for the week. The French, instead, tend to shop daily, walking to small shops and farmers' markets where they have a choice of fresh fruits, vegetables, and eggs as well as high-quality meats for each meal.

    After a visit to the United States, Mireille Guiliano, author of French Women Don't Get Fat, decided to write about the importance of knowing when to stop rather than suggesting how to avoid food. Today she continues to stay slim and rarely goes to the gym.

    In spite of (尽管) all these differences, evidence shows that recent life style changes may be affecting French eating habits. Today the rate of obesity (肥胖)—or extreme overweight — among adults is only 6%. However, as American fast food gains acceptance and the young refuse older traditions, the obesity rate among French children has reached 17% — and is growing.

阅读理解

    Believe it or not, the size of the human brain has become smaller over the past 20,000 years. Scientists argue over whether this means we are becoming more or less intelligent as a species.

    “I'd call that a major downsizing in an evolutionary eye blink (眨眼),” John Hawks told Discover magazine.

    Why is the brain becoming smaller?

    There are different theories to explain it. One is that tens of thousands of years ago, before the decline began, to survive in cold and dangerous conditions, humans needed a stronger and larger body and therefore, a larger head. Also they had to chew the tough meat of rabbits, foxes and horses. As conditions improved, the brain stopped growing, according to supporters of this theory.

    Another theory comes from a recent study by David Geary and Drew Bailey. They found that brain size decreased as population density(密度) increased.

    “As complex societies appeared, the brain became smaller because people did not have to be as smart to stay alive.” Geary told AFP.

    But smaller brain size does not necessarily mean that modern humans are less smart than their ancestors. “Modern humans simply developed different, more complex forms of intelligence,” said Brian Hare.

    Hare's studies focus on two types of great apes: chimpanzees and bonobos. Both are much like humans, but are physically quite different from one another. The bonobo has a smaller brain than the chimpanzee, and is also much less aggressive and more tolerant.

    “When it comes to working out a problem,” Hare said, “chimpanzees are much less likely to accomplish it if it involves working together. Not so with bonobos.”

The smaller brain in modern humans may be evidence that we can cooperate,” Hare told the US National Public Radio.

阅读理解

    If you follow these insider tips, your photos will look like you had the place to yourself at the popular tourist attractions.

    Vatican Museums: Vatican City

    The Vatican draws more than five million people each year, and queues can reach four hours during peak season. Christie Hudson, senior communications manager at Expedia,recommends, choosing a skip-the-line tour.“ This not only lets you avoid the ticket counter,but also includes the use of a private partner entrance.” Extra time to visit the Sistine Chapel? Yes!

    Bamboo Forest: Kyoto, Japan

    Bamboo Forest is the most worthy sight in Kyoto. If you're longing to enjoy the pathways and take pictures in total quietness, Kyoto Arashiyama Travel Guide recommends hitting the famous Bamboo Grove Path as early in the morning as possible—think 7 a.m. if you're up for it. Don't miss these hidden treasures you can only witness in Japan.

    Chichen Itza: Yucatán,Mexico

    Home to E1 Castillo and the Temple of the Warriors, Chichen Itza is a must-see. Want to beat the rush? Schedule an early tour that takes place before a site opens to the public. Led by an archaeologist guide,it's full of fascinating insights and facts—without tons of pack-wearing tourists.

    Louvre Museum: Paris, France

    The Louvre is one of the most popular museums on the planet. If waiting around in line to get in isn't the way you prefer to spend your time in Paris,consider purchasing a reserved ticket. This will give you entry to the pyramid within a half-hour window. The Louvre is also open until 9:45 p.m. on Wednesdays and Fridays, if you're up for some late-night art visits.

阅读理解

    China is showing the world its great resolve in the global climate campaign with concrete and self-motivated efforts as well as serious commitment.

    At the opening ceremony of the Paris climate summit, Chinese President Xi Jinping restated China's plan made in June to cut its carbon emissions(排放)per unit of GDP by 60-65 percent from 2005 levels by 2030, and increase non-fossil fuel sources in primary energy consumption to about 20 percent.

    With a large population, China is facing increasing resource limits, severe environmental pollution and a worsening ecosystem, and its citizens are also becoming increasingly aware of environmental problems. Suffering environmental problems and seeing the efforts as important to transforming its economic growth pattern, the country has much at risk if climate change is left unattended.

    Actually, climate change efforts are already included in China's medium-and long-term program of economic and social development, and ecological efforts are the clear characteristics in China's 13th Five-Year Plan(2016-2020).

    Although it is and will be a developing country for a long time to come, China has been actively involved in the global campaign against climate change, now topping the world in terms of energy conservation and use of new and renewable energies.

However, China's development rights need to be respected. It is unfair to overstress China's status as one of the world's largest greenhouse gas emitters and regard it as the major part of responsibilities in the global fight against climate change.

    It is worthy of notice that China's emissions of greenhouse gases per person are far lower than those of developed countries, especially the United States, although rapid economic expansion and its population base have made it one of the biggest producers of the gases.

    To show its great resolve, Beijing in September also announced the establishment of an independent South-South cooperation fund of 20 billion RMB to help developing countries affected by global warming.

    While China is eagerly accomplishing its policy commitments, developed countries should stop questioning China's commitment to fighting climate change and pointing fingers, and start shouldering their due responsibilities instead.

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