科目:高中英語 來源: 題型:閱讀理解
The hole in the Earth's ozone layer (臭氧層) has until now protected Antarctica from the worst effects of global warming. But scientists have warned that as the hole closes up in the next few decades, temperatures on the continent could rise by around 3°C on average, with melting ice contributing to a global sea level increase of up to 1.4 meters.
In the past decades the western Antarctic has seen rapid ice loss as the world has warmed, but the other parts of the continent have, paradoxically, been cooling, resulting in a 10% increase in ice in the seas around the region. This is because the hole in the ozone layer has increased cold winds in Antarctica, making much of the continent surface colder than usual.
But now that the gasses that cause the ozone hole have been banned, scientists expect the hole to repair itself within the next 50 to 60 years. By then the cooling effect will have faded out and the Antarctic will face the full impact of global warming. This means an increase in average air temperatures of around 3°C and a reduction in sea ice by around a third.
The biggest threat to the continent comes from warming seas. Robert Johnson, a scientist who monitors Antarctica ice sheets, said, "The ice sheets in Antarctica are hundreds of metres thick. But once warm ocean waters start flowing underneath, the ice will begin thinning and could break up very quickly. "Thinning ice sheets cause ice to break away from the continent and to melt even faster. Escaping ice from western Antarctica has already resulted in a 10% rise in global sea level in recent decades.
Johnson believes that international action to reduce global warming is required immediately or it may be too late. "Everything is connected —Antarctica may be a long way away but it is an important part of the Earth's system," said Johnson. "It contains 90% of the world's ice, 70% of the world's fresh water and that is enough, if it melts completely, to raise sea levels by 63 meters."
Even in a worse-case situation scientists don't expect the ice to entirely disappear, but predict that, because of the melting ice sheets, average sea level rise will be around 1.4 meters higher by the end of the century.
The underlined word "paradoxically" (in Paragraph 2) most probably means "__".
A. rapidly B. approximately C. contradictorily D. apparently
What is the effect of the hole in the ozone layer on Antarctica?
A. It is causing the ice to melt faster.
B. It is making much of the continent colder.
C. It is making the effects of global warming in the region worse.
D. It is reducing the amount of water in Antarctica.
What do scientists think is the biggest danger facing Antarctica?
A. Rising sea levels. B. Warming sea water temperature.
C. Water pollution. D. Growing ice sheets.
Which of the following is true according to the passage?
A. Antarctica is currently experiencing the full effects of global warming.
B. The average temperature has increased by3°C in recent decades.
C. Antarctica contains most of the world's fresh water.
D. Ten percent of Antarctica's ice has already been lost.
The best title for the passage is ______.
A. Our planet in danger B. Antarctica melting away
C. Action plan to save Antarctica D. Let's save the ozone layer
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科目:高中英語 來源:2011屆河北省唐山一中高三上學期期中考試英語卷 題型:閱讀理解
Damage to Ozone Layer Gets Worse
In the middle of winter, when snow is falling in many parts of the United States, scientists have sounded a warning to people who plan to spend many hours in the sun this summer.The warning: The sun's summertime rays are more dangerous than once thought.
A team of scientists from 80 nations recently reported to the United Nations that a layer of ozone(臭氧層)in the atmosphere, which protects humans from harmful levels of ultraviolet(紫外線)radiation, will be thinner over the United States this summer.The thinner layer allows more ultraviolet rays from the sun to reach Earth.The extra amount of ultraviolet radiation could cause an increase in the number of cases of skin cancer.
Scientists first became concerned about the layer in the mid-1980s when a hole was discovered in the layer above Antarctica during the winter.The hole was caused in chemicals used in refrigerators and air conditioners.When these chemicals are sent out into the atmosphere, they produce gases that destroy the ozone.
Concern about the protective ozone layer rose more recently when data from satellites and ground stations showed that ozone levels were dropping over areas other than Antarctica.Low ozone levels were recorded in the spring and summer over the United States and over other populated areas in the world.
Although many countries have already begun stopping the use of ozone-destroying chemicals, the new findings are expected to advance the timetable for a total ban of the chemicals.
【小題1】The scientists have observed the ozone layer ______.
A.since 1980 | B.since last winter |
C.for more than 20 years | D.for about one year |
A.do a lot of good to human beings in many ways |
B.protect humans from diseases caused by bad weather |
C.do a lot of harm to human beings in the summer-time |
D.protect humans from harmful levels of ultraviolet radiation |
A.a(chǎn)bove Arctic during the winter in the mid-1980s |
B.a(chǎn)bove Antarctica during the winter in the mid-1980s |
C.over somewhere in the north of the equator in 1980 |
D.over the USA in the summertime in the mid-1980s |
A.the changeable weather | B.ozone-destroying chemicals |
C.chemicals from refrigerators | D.chemicals from air conditioners |
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科目:高中英語 來源:2013屆新疆烏魯木齊一中高三上學期第一次月考英語試卷(帶解析) 題型:閱讀理解
The hole in the earth's protective ozone layer(臭氧層)won't repair itself until about two decades later than had been expected, scientists announced.
The ozone layer blocks more than 90 percent of the sun's ultraviolet radiation(紫外線輻射), helping to make life on Earth possible. For many dacades, ozone was depleted(削減) by chlorine and bromine gas in the air. A hole in the ozone layer formed over the Southern Hemisphere.
Computer models had forecast that the hole would fill back in by 2050. An improved computer model forecasts the recovery won't occur until 2068. The model, fed with fresh data from statellites and airplanes, was supported by the fact that it accurately reproduced ozone levels in the Antarctic stratosphere(平流層)over the past 27 years.
The ozone hole is actually more of a broad region with less ozone than ought to occur naturally. It is not limited to Antarctica, as is often believed.
Over areas that are farther from the poles like Africa or the US, the levels of ozone are only three to six percent below natural levels. Over Antarctica, ozone levels are 70 percent lower in the spring. This new method allows us to more accurately estimate(估計)ozone-depleting gases over Antarctica, and how they will decrease over time, reducing the ozone hole area.
Paul Newman, a scientist,said that the ozone hole has not started to become smaller as quickly as expected. They figure it will not become much smaller until 2018, after which time the recovery should proceed more quickly. And the hole will not be filled in again until 2065.
【小題1】According to the passage, the ozone layer _______
A.a(chǎn)bsorbs as much as sunlight as possible |
B.protects man against ultraviolet radiation |
C.controls the changes in temperature |
D.prevents the production of carbon dioxide |
A.it was once proved by facts |
B.it has been studied for 27 years |
C.it was created by many scientists |
D.it is related to satellites and airplanes |
A.the levels of ozone |
B.ozone-depleting gases |
C.the ozone holes |
D.the areas far from the poles |
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科目:高中英語 來源:2013-2014學年湖北省高三上學期12月月考英語試卷(解析版) 題型:閱讀理解
It is often said that man has become the enemy of our planet. This is no exaggeration(夸張), for reports show that man’s greed has done much to destroy the earth. Man, in his greedy desire for financial growth, has polluted the air, land and water, and has robbed our valuable natural resources. Man’s industrial plants pour out poisonous waste that pollutes the sea and puts life in the sea under the threat of dying out; at the same time, they release alarming amounts of carbon dioxide, chlorofluorocarbons (CFCs) and other pollutants. Small wonder that the air now is much warmer and more impure than ever before.
Of course, this is not just because of man’s greed—it is man’s pressing need as well. For instance, in developing countries, huge financial foreign debts have forced governments to approve the cutting of forests for agriculture or ranching. As a result, forests are cut down just to meet man’s immediate needs.
Perhaps unknowingly,man has changed the make-up of the earth's atmosphere. Scientific studies have shown that CFCs used in refrigerators and industrial cleaners are fast destroying the ozone layer—a protective layer in the atmosphere that protects us against the harmful effects of the sun’s ultraviolet (紫外線)rays. In fact, documented reports have shown a terrible fact that there are “holes” in the ozone layer over the Antarctic. And they appear to be expanding.
Faced with these environmental problems, world leaders have shown deep concern. The UN Environmental Programme (UNEP) has arranged international agreements like the Vienna convention of 1985 and the Montreal Protocol of 1989 to preserve the ozone layer by controlling the production, use and trade of destructive chemicals.
There may be some doubt as to how effectual these agreements may be, given that some countries still maintain an “I-don’t-care” attitude. Their attitude is probably due to their failure to grasp the importance of the problem. Then, there is no doubt that environmental education on an international scale(規(guī)模)is greatly needed, so that all countries, great and small—the “haves” and the “have nots”—may realize their responsibilities for our planet.
In the meantime, the UNEP seems to have taken steps in the right direction, and it is hoped that in the not so distant future, all nations of the world will join hands in saving mother earth.
1.Which of the following is a reason for the cutting and burning of forests?
A. To build houses for more population.
B. To have land for agriculture.
C. To export trees to other countries.
D. To build industrial plants.
2.The holes in the ozone layer are largely due to________.
A. man’s research activities B. the greenhouse effect
C. the ultraviolent D. harmful chemicals
3.Why don’t some countries care about the problem of the environment?
A. They don’t want to put their lives in danger.
B. They just don’t know how to solve the problem.
C. They haven’t realized the seriousness of the problem.
D. They don’t want to break their international commitment.
4.What is the author’s attitude towards the future of the environment?
A. Hopeful. B. Unconcerned C. Doubtful D. Objective
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科目:高中英語 來源:2015屆山西省高一12月月考英語試卷(解析版) 題型:閱讀理解
We’re surrounded by chemistry in everyday life. Sometimes it is easy to see, like when your science teacher does a big experiment in class. At other times, it can be pretty hard to see everyday chemistry at work, but nearly everything you touch or use has some element of chemistry in it.
Something as simple as toothpaste contains at least three chemicals, if not more. It is the mixture of them and its chemical reaction that keeps your teeth clean. Other things you use every day are created by chemistry, such as hair products, shampoo and soap. Adding detergent (洗滌劑) to water involves chemistry. Without chemistry, we would never have known that we need soap to get the oil out of clothes or skin. Chemistry not only helps us make products for use, but it also helps us understand the world around us. Chemistry helps us understand what the ozone layer (臭氧層) is and how it protects us. Chemistry also gives us sunscreen to protect us from the sun. Thanks to chemistry, we know bleach (漂白劑) can’t be mixed with vinegar(醋), because it can produce poisonous gas.Without chemistry, we wouldn’t have fireworks displays on important days.
Chemistry plays a big role in food preparation. Cooking food causes it to go through a chemical change. That is why cooked food often tastes different from raw food. Baking is a great example of chemistry. Too much or too little of any ingredient(成分,尤指烹飪) makes a difference to the result of baking, for example, the dough (面團) won’t rise or the cake will be flat.
Chemistry isn’t something that just lives in a lab; it’s something that you meet hundreds of times every day. Knowing how chemistry works will give you a greater understanding of the science behind some of the simplest-looking things.
1.What’s the main idea of Paragraph 1?
A.Chemistry is easy to see around us.
B.Sometimes chemistry is hard to see around us.
C.How a science teacher does a big experiment.
D.Few things in everyday life contain chemistry.
2.The following actions are about chemistry EXCEPT _____.
A.cleaning teeth with toothpaste
B.washing hair with hair products
C.using soap to get the oil out of clothes
D.washing your face with water
3.The underlined word “poisonous” in Paragraph 3 means _____.
A.harmful B.healthy C.fresh D.pleasant
4.Which one is TRUE according to Paragraph 4?
A.One can’t find chemistry when cooking food.
B.Chemistry plays an important part in food mak-ing.
C.That dough rises is nothing to do with chemistry.
D.A flat cake is the result of too many ingredients.
5.Which of the following would be the best title for the text?
A.Chemistry Around the House
B.Chemistry in Science
C.Chemistry for Dinner
D.Chemistry in everyday life
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