global warming , those present at the international meeting also discussed other issues. A．Apart from B．In spite of C．But for D．Except for 题目和参考答案——青夏教育精英家教网—

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35． global warming , those present at the international meeting also discussed other issues.

A．Apart from B．In spite of C．But for D．Except for

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"The world's oceans are slowly getting more acidic,”say scientists. The researchers from California report that the change is taking place in response to higher levels of carbon dioxide in the atmosphere.

The lowering of the waters’pH value is not great at the moment but could cause a serious threat to current ocean life if it continues, they warn. Ken Caldeira and Michael Wickett, from the Lawrence Livermore National Laboratory, report their concerns in the journal Nature.

Increasing use of oil fuels means more carbon dioxide is going into the air, and most of it will eventually be absorbed by seawater. Once in the water, it reacts to form carbonic acid. Scientists believe that the oceans have already become slightly more acidic over the last century.

These researchers have tried to predict what will happen in the future by combining what we know about the history of the oceans with computer models of climate change．"This level of acidity will get much more extreme in the future if we continue releasing CO2 into the atmosphere," said Dr Caldeira. "And we predict the amount of future acidity will exceed（超过）anything we have seen over the last several hundred million years, let alone perhaps after rare disastrous events such as asteroid（小行星) impacts．”

However, it is not absolutely clear what that means for ocean life．Most organisms live near the surface, where the greatest pH change would be expected to occur, but deep-ocean life forms may be more sensitive to pH changes．Coral reefs and other organisms whose shells contain calcium carbonate（小行星) may be particularly affected if the water's acidity levels keep going up, the team predict. They could find it much more difficult to build these structures in water with a lower pH.

In recent years some people have suggested storing carbon dioxide from power stations in the deep ocean as a way of dealing with global warming．But Dr Caldeira said that such a strategy should now be re-considered. "Previously, most experts had looked at ocean absorption of carbon dioxide as a good thing-because in releasing CO2 into the atmosphere we warm the planet, and when CO2, is absorbed by the ocean, it reduces the amount of greenhouse warming.”

According to Dr Caldeira,__________ .

A. ocean absorption of carbon dioxide is a good thing

B. more oil fuels will be used in the near future

C. scientists may predict climate changes with computer models

D. the future situation of the amount of acidity is extremely serious

f the water's acidity level keeps rising,_________ .

A. ocean life whose structures contain calcium carbonate may be affected

B. the waters’pH value will become higher and higher

C. organisms living near the surface are more sensitive to pH changes

D. some disastrous events will occur more often than before

Most experts once believed storing carbon dioxide in the ocean would reduce________ .

A. the CO2 absorbed by the ocean B. the amount of greenhouse warming

C. the acidity of the ocean D. the gradual release of CO2

The purpose of this passage is to_________ .

A. show people the findings of a research team B. inform people of how acid the ocean is now

C. introduce Dr Caldeira and his team's research D. warn people of the higher level of CO2

Read the following passage. Complete the diagram by using the information from the passage.

Write NO MORE THAN THREE WORDS for each answer.

Most scientists are now certain that global warming is taking place. Gases such as carbon dioxide produced by burning of coal, oil, wood, together with industrial pollution, are creating a warm blanket around the earth. This blanket is trapping heat in the atmosphere and so raising the temperature of the earth.

The evidence for global warming can now be seen in the world’s changing climate statistics. In Europe, eight of the last ten years have seen record high temperature. For northern Europe, this has generally been a change for the better. Gardens can now even grow tropical plants in England, though London may never see a “White Christmas” again. On the other hand, the countries around the Mediterranean Sea, and those south of the Sahara desert are receiving even less rain than before. In sub-Saharan Africa the crops are drying out in the fields and people are dying of starvation. In the Americans, the climate is becoming more extreme—the summers are getting hotter and the storms are becoming more violent. In 1999 the southern United States was struck by a series of destructive hurricanes, while the end of 1999 saw the worst floods ever in Venezuela. Meteorologists expect such trends to continue, and indeed to worsen, if global warming cannot be stopped.

In addition to worrying about rising global temperatures and more extreme weather conditions, scientists are closely monitoring sea levels around the world. These are slowly rising, as the northern and southern polar ice-caps start to melt. This will have serious consequences for low-lying countries near the sea, such as the coral islands in the Pacific, and Bangladesh where the River Ganges already floods the delta（三角洲） every year. Already parts of these places are disappearing under the rising tides.

Title: 71._______________.

evidences

Culture helps human societies survive in changing natural environment．For example, the end of the last Ice Age, beginning about 15,000 years ago, brought a big challenge to which humans had to adapt．Before this time, large parts of the northern hemisphere were covered in great sheets of ice that contained much of the earth' s water．In North America, large animals that wandered the vast tundra （冰原） provided people with food and materials for clothing and simple shelters．When the earth became warm, large Ice Age animals disappeared, and many land areas were covered by rising sea levels from melting ice．But people survived, they developed new technologies and learned how to survive on new plant and animal species． Finally some people settled into permanent villages, durable houses and farms．

Cultural adaptation has made humans one of the most successful species on the planet． Through history, major developments in technology, medicine, and nutrition have allowed people to reproduce and survive in ever-increasing numbers．The global population has risen from 8 million during the Ice Age to about 6 billion today．

However, the successes of culture adaptation can also create problems in the long run．Over the last 200 years, people have begun to use large quantities of natural resources and energy and to produce a great amount of material and chemical wastes．The global population now consumes some important natural resources—such as petroleum, wood, and minerals—faster than nature can produce them．Many scientists believe that in the process of burning fuels and producing wastes, people may be changing the global climate in unpredictable and possibly harmful ways．Thus, the adaptive success of the present-day global culture of production and trade may be temporary．

1.What is the first paragraph mainly talking about?

A．How the human beings survived in the Ice Age．

B．What the situation was like during the Ice Age．

C．What caused the Ice Age to come to an end．

D．Why the Ice Age was very important．

2.To deal with the problems, human beings should ______according to the passage．

A．stop developing any longer

B．reduce the overuse of natural resources

C．stop the global warming and using natural resources

D．save more animals in case they all die out

3.Which of the following is the problem caused by cultural adaptation according to the passage?

A．A very developed culture came into being．

B．New technologies have been developed．

C．Natural resources have been used up．

D．Human activities have done damage to the balance of nature．

4.Which of the following can be the best tide of the passage?

A．Natural Environment Should Be Protected．

B．The Success of Cultural Adaptation Is Not Permanent．

C．The Global Population Is Increasing Since Ice Age．

D．Human Beings Are Capable of Surviving on Earth.

When Julia Rhodes is asked what she does for a living，she says she is a “wind farmer”．While her job is operation manager for wind farm owner RES-Gen：Rhodes is responsible for making sure their l4 wind farms in the UK and Ireland are using the power of the wind to produce power for homes and businesses．

RES-Gen is a division of leading renewable energy group Renewable Energy Systems(RES)，a UK-based company with global operations． RES was one of the pioneers of wind energy technology．It built the UK’s second wind farm in l992．Since then：RES has built more than 40 wind farms across four continents．

Rhodes graduated from the University of Nottingham with a degree in manufacturing engineering． Following that，she received a master's degree in renewable energy systems technology specializing in wind energy． Rhodes has worked in the wind sector ever since, providing technical support for two leading wind farm developers before joining RES in 2001．

RES’s projects are continually monitored by computer and checked remotely on a daily basis．Regular servicing is carried out by contractors(承包者)，usually every six months. Rhodes always has a top—level view of how well the wind turbines(涡轮)are operating．

Rhodes is a supporter of wind—energy engineering．She also works closely with other departments to keep good relations with the communities around RES’s wind farms．The open days and government officials’ visits show that wind power is popular and that wind projects-are viewed positively．

Renewable energy is a growing sector with attractive career prospects． For Rhodes．as the RES wind farms expand，the team that she manages is expected to increase．She enjoys working for a company with strong engineering roots and a highly respected track record(业绩)．Her job as a wind farmer is challenging and enjoyable．“It's great knowing that you are helping to bring about a clean．environment and are contributing to the global community．”

1.What’s the text mainly about?

A．Julia Rhodes and her work． B．Why Julia Rhodes works in RES．

C．The importance of renewable energy．D．How出e wind can produce Dower．

2.What can we know about Julia Rhodes?

A．She once worked as a farmer to make a living．

B．She has worked in RES ever since graduation．

C．She likes her job as a wind farmer very much．

D．She is in charge of forty wind farms in the UK．

3.What can we learn about RES from the text?

A．It built the UK's first wind farm in 2001．

B．It plays a leading role in the wind sector．

C．It is an important branch of RES—Gen．

D．It provides regular servicing for its contractors．

4.Which of the following is NOT true?

A．RES is financially supported by the British government．

B．Wind farms receive a warm welcome around the UK．

C．RES has developed at a high speed during recent years．

D．Rhodes thinks people should create a clean environment．

The hole in the Earth's ozone layer (臭氧层) 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.

1. The underlined word "paradoxically" (in Paragraph 2) most probably means "__".

A. rapidly B. approximately C. contradictorily D. apparently

2.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.

3.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.

4.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.

5. 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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