Carbon dioxide________from burning fuels is the most common of the so-called greenhouse gases.
A．produced B．producing C．to be produced D．having been produced
高二英语单项填空简单题
Carbon dioxide ___ from burning fuels is the most common of the so-called greenhouse gases.
| A．producing | B．having been produced |
| C．to be produced | D．produced |
高二英语单项填空简单题查看答案及解析
Carbon dioxide________from burning fuels is the most common of the so-called greenhouse gases.
A．produced B．producing C．to be produced D．having been produced
高二英语单项填空简单题查看答案及解析
Carbon dioxide(CO2)_______ from burning fuels is the most common of the so-called greenhouse gases.
A．producing B．having been produced
C．to be produced D．produced
高二英语单项填空中等难度题查看答案及解析
Large quantities of solid fuel ________ consumed every day and too much carbon dioxide is sent into the air，which in turn ________ the going up of temperature.
A．is；results in B．are；results in
C．is；leads to D．are；results from
高二英语单项填空中等难度题查看答案及解析
Large quantities of solid fuel________ consumed every day and too much carbon dioxide is sent into the air，which in turn________ the going up of temperature.
A．is；results in B．are；results in
C．is；leads to D．are；results from
高二英语单项填空中等难度题查看答案及解析
Nowadays, the most effective way to get power comes from burning fuels such as coal, oil and natural gas. They are less costly than other forms of energy. But burning fuels releases carbon dioxide, known as CO2 gas. Scientists agree that increasing amount of CO2 in Earth’s atmosphere is partly to blame for the rising temperature. It's clear the change in the atmosphere can have a big effect on the weather condition around the world.
However, keeping extra CO2 from entering the atmosphere is a difficult process. It’s not enough to advise people to burn the fuels in a clean way. As a result, scientists are looking for the best method for capturing the gas and storing it away from the atmosphere. Some of this research is taking place in Norway. The Technology Center in Mongstad (TCM) is the largest facility in the world for major testing of the CO2-capturing technology.
Tore Amundsen is its chairman. He says TCM has produced important information since it opened. The center is connected to a nearby electric power plant. It treats the waste gas from the plant using the chemical solvent (溶剂) which attracts the CO2 molecules. Then researchers take the solvent with the CO2 molecules and boil it. In this way, they can separate CO2 from the solvent and use the solvent again to capture more CO2. TCM can help capture 90 percent of the CO2 from the waste gas. With the current state of technology, it will increase the cost of electricity between perhaps 30% to 40% when the technology is applied to a power plant.
Experts say the best way to store the captured CO2 gas is to place it below the surface of the ground. Scientists can use the pumping technology to put it into areas left empty after the removal of oil or natural gas. But TCM does not pump the CO2 it captures. Instead, it releases the gas into the atmosphere. Tore Amundsen says only highly developed industrial nations can afford the pumping technology. So far, only Canada has a power plant that pumps CO2 gas. In total, there are just a few similar power plants in the world.
1.What can we learn about the CO2 gas?
A.It is usually found in coal.
B.It leads to world climate change.
C.It is a new kind of energy.
D.It does good to the atmosphere.
2.Scientists want to deal with CO2 gas by_________.
A.sending it into the atmosphere
B.finding clean fuels to use
C.collecting it with technology
D.stopping people from burning fuels
3.Which of the following is TRUE about TCM?
A.It works well in treating the waste gas.
B.It’s the only center to study the CO2 gas.
C.It was set up by Tore Amundsen.
D.It helps the power plant save a lot of money.
4.According to experts, the captured CO2 gas________.
A.can be used with oil or natural gas
B.should be put underground
C.must be allowed to go into the air
D.should stay in the chemical solvent
高二英语阅读理解困难题查看答案及解析
Most people know something about the greenhouse effect. Factories send gasses such as carbon dioxide, or CO2, into the atmosphere, the air around the earth. In the past, this wasn’t a problem because trees absorbed the CO2. But now people in many countries are cutting down billions of trees all around the world. At the same time, factories are sending more CO2 into the atmosphere. It’s difficult to believe, but factories put billions of tons of CO2 into the atmosphere every year. One ton is over 2000 pounds, so it is a lot of pollution. There is too much CO2 and there aren’t enough trees, so the world is getting warmer. In other words, we have a greenhouse effect. This is terrible for the environment.
What can we do about this? Firsts we can stop using so much coal and oil. We can learn to use different kinds of energy: the sun, wind, steam from volcanoes，and heat from inside the earth. Second, instead of cutting down trees, we should plant more trees. One tree can absorb ten pounds of carbon dioxide every year.
The trees are good for the earth’s atmosphere and for Guatemala (拉丁美洲国家危地马拉).In small towns and villages in Guatemala, most women are poor and have hard lives. Trees help them in three ways. First, the Connecticut factories pay them to plant the trees. Their pay is com, not money. The com is good for their children. Second, these women know a lot about their environment. They know where to plant when to plant, and what kinds of trees to plant. For example，they plant many fruit trees. The fruit gives them vitamins for their families, diets. Other trees are good for firewood. In a few years, the women won’t spend so much time looking for firewood. Third, all these trees are good for the soil. Now rain can’t wash the soil down from the mountains so easily.
This plan isn’t enough to stop the greenhouse effect. However, it’s a start. The woman of Guatemala are helping themselves and helping their environment.
1.Which of the following statement is NOT true?
A. Factories send more CO2 into the atmosphere.
B. Trees can’t absorb the same CO2 as they did in the past.
C. Billions of trees are being cut down throughout the world.
D. The greenhouse effect is extremely bad for the environment.
2.What’s the main idea of the second paragraph?
A. The reasons why we should plant more trees.
B. Ways we can adopt to take heat from volcanoes.
C. Measures to be taken to forbid the use of coal and oil.
D. Things we can do to stop or reduce the greenhouse effect.
3.How does planting trees help improve women’s lives in Guatemala?
A. By preventing the greenhouse effect.
B. By developing their skills of planting trees.
C. By enabling them to earn more money to support their family.
D. By making them get com and fruit to feed their family in return.
4.What’s the author’s attitude towards the plan of planting trees in Guatemala?
A. Critical. B. Neutral.
C. Positive. D. Doubtful.
高二英语阅读理解中等难度题查看答案及解析
The planet is getting greener, and we are responsible. Carbon dioxide generated by human activities is promoting photosynthesis (光合作用) and causing a beneficial greening of the Earth’s surface.
For the first time, researchers claim to have shown that the increase in plant cover is due to this “CO2 fertilisation (肥沃化) effect” rather than other causes. However, it remains unclear whether the effect can reduce any negative effects of global warming, such as the spread of deserts.
To home in on the effect of CO2, Randall Donohue of Australia’s national research institute, the CSIRO in Canberra, monitored vegetation (植被) at the edges of deserts in Australia, southern Africa, the US Southwest, North Africa, the Middle East and central Asia. These are regions where there is plenty of warmth and sunlight, but only just enough rainfall for vegetation to grow, so any change in plant cover must be the result of a change in rainfall patterns or CO2 levels, or both.
If CO2 levels were constant, then the amount of vegetation per unit of rainfall ought to be constant, too. However, the team found that this figure rose by 11 per cent in these areas between 1982 and 2010, mirroring the rise in CO2 emissions (排放). Donohue says this lends strong support to the idea that CO2 fertilization drove the greening.
The extra plant growth could have knock-on effects on climate, Donohue says, by increasing rainfall, affecting river flows and changing the likelihood of wildfires. It will also absorb more CO2 from the air, potentially damping down (抑制) global warming but also limiting the CO2 fertilization effect itself.
Donohue cannot yet say to what extent CO2 fertilisation will affect vegetation in the coming decades. But if it proves to be significant, the future may be much greener.
1.According to the author, the increase in plant cover _____.
A. will speed up global warming
B. results from human activities
C. will stop the spread of deserts
D. promotes the CO2 fertilization effect
2.What does the underlined phrase “To home in on” in Para 3 probably mean?
A. To hold back. B. To cut down.
C. To improve. D. To observe.
3. The amount of vegetation in those monitored areas rose with _____.
A. the rise in CO2 emissions B. annual rainfall
C. the temperatures around D. the amount of sunlight
4.What’s the best title of the text?
A. More rainfall, less CO2 emission
B. How to deal with carbon emissions
C. Positive effects of global warming
D. CO2 emission making Earth greener
高二英语阅读理解中等难度题查看答案及解析
The view ______ many scientists hold is ______ too much emission of carbon dioxide is destructive.
A．what; that B．that; which
C．that; that D．which; which
高二英语单项填空中等难度题查看答案及解析
It is pretty well understood_______ controls the flow of carbon dioxide in and out the atmosphere today.
A. what B. when C. that D. how
高二英语单项填空简单题查看答案及解析