题目内容
Solar energy for your home is coming．It can help you as a single home owner．It can help the whole country as well．Whether or not solar energy can save your money depends on many things．Where you live is one factor．The type of home you have is another．Things like insulation（绝缘） present energy costs and the type of system you buy are added factors.
Using solar energy can help save our precious fuel．As you know, our supplies of oil and gas are very limited．There is just not enough on hand to meet all our future energy needs．And when Mother Nature says that’s all, the only way we can delay hearing those words is by starting to save energy now and by using other sources, like the sun.
We won’t have to worry about the sun’s running out of energy for another several billion years or so．Besides begin an endless source of energy, the use of the sun has other advantages as well．The sun doesn’t offer as many problems as other energy sources．For example, fossil fuel plants add to already high pollution levels．With sola energy, we will still need sources of energy, but we won’t need as much．That means we can cut down on our pollution problems.
With all these good points, why don’t we use more solar power? There are many reasons for this．The biggest reason is money．Until now, it was just not practical for a home owner to put in a solar unit．There were cheaper sources of energy．All this is changing now．Solar costs are starting to equal the costs of oil and electricity．Experts say that gas, oil and electricity prices will continue to rise．The demand for electricity is increasing rapidly．But new power plants will use more gas, oil or coal．Already in some places the supply of electricity is being rationed．Solar energy is now in its infancy．It could soon grow to become a major part of our nation’s energy supply.
1．Which statement best expresses the main idea?
A．Something about Solar Energy and Pollution.
B．Solar Energy.
C．Energy and Pollution
D．Energy and Money
2．Solar energy can help us save ____.
A．the earth and nature resources B．mother nature
C．the sun D．our precious fuel
3．Which of the following statements is correct?
A．Energy from coal would not pollute our living environment.
B．Energy from natural gas would not pollute our living environment.
C．Energy from the sun would not pollute our living environment．
D．Energy from oil would not pollute our living environment.
4．Solar energy is in its infancy, ____.
A．but it will be considered as an important part of our nation’s energy supply
B．yet we will build more power plants
C．and the supply of electricity will be rationed
D．but we don’t need practice energy rationing now
BDCA
阳光课堂课时作业系列答案In a world with limited land, water and other natural resources(资源), the harm from the traditional business model is on the rise. Actually, the past decade has seen more and more forests disappearing and the globe becoming increasingly warm. People now realize that this unhealthy situation must be changed, and that we must be able to develop in sustainable(可持续的)ways. That means growth with low carbon or development of sustainable products. In other words, we should keep the healthy while using its supply of natural resources.
Today, sustainable development is a popular trend in many countries. According to a recent study, the global market for low-carbon energy will become three times bigger over the next decade. China, for example, has set its mind on leading that market, hoping to seize chances in the new round of the global energy resolution. It is now trying hard to made full use of wind and solar energy, and is spending a huge amount of money making electric cars and high-speed trains. In addition, we are also seeing great growth in the global markets for sustainable products such as palm oil(棕榈油), which is produced without cutting down valuable rainforest. In recent years the markets for sustainable products have grown more than 50%.
Governments can fully develop the potential of these new markets. First, they can set high targets for reducing carbon emissions(排放) and targets for saving and reusing energy. Besides, stronger arrangement of public resources like forests can also help to speed up the development. Finally, governments can avoid the huge public expenses that are taking us in the wrong direction, and redirecting some of those expenses can accelerate the change from the traditional model to a sustainable one.
The major challenge of this century is to find ways to meet the needs of a growing population within the limits of this single planet. That is no small task, but it offers a large of new chances for sustainable product industries.
【小题1】The traditional business model is harmful because of all the following EXCEPT that____.
| A．it makes the world warmer |
| B．it consumes natural resources |
| C．it brings severe damage to future |
| D．it makes growth hard to continue |
| A．China lacks wind and solar energy |
| B．China is the leader of the low-carbon market |
| C．High-speed trains are a low-carbon development |
| D．Palm oil is made at the cost of valuable forests |
| A．cut public expenses | B．forbid carbon emission |
| C．develop public resources | D．encourage energy conservation |
| A．develop sustainable products | B．explore new natural resources |
| C．make full use of natural resources | D．deal with the major challenge |
| A．To introduce a new business model | B．To compare two business models |
| C．To predict a change of the global markets | D．To advocate sustainable development |
As the railroads and the highways shaped the American West in the past centuries, a new electhical generating（发电）and transmission（输送）systen for the 21th century will leave a lasting mark on the West, for better or worse. Much of the real significance of railroads and highways is not in their direct physical effect on the scenery, but in the ways that they affect the suurouding community. The same is true of big solar ppants and the power lines that will be laid dowm to move electricity around.
The 19th century saw land grants（政府拨地）offered to railroad companies to build the transcontinental railroads ,leaving public land in between privately owned land . In much of the west ,some of the railroad sections were developed while others remained undeveloped ,and in both cases the landownership has presented unique challenges to land management ,with the completion or the interstate highway system ,many of the small towns which sprang up as railway stops and developed well ,have lost their lifeblood and died .
Big solar plants and their power lines will also have effects far beyond their direct footprint in the west .this is not an argument against building then ,we need alternative energy badly .and to really take advantage of it we need to be able to move electricity around far more readily than we can now .
So trade-offs will have to be made .some scenic sport will be sacrificed .some species (物种)will be forced to move ,or will be carefully moved to special accommodations ,deals will be struck to reduce the immediate effects .
The lasting effects of these trade-offs are another matter .the 21st century development of the American west as an ideal place for alternative energy is going to throw off a lot of power and money to do a lot of good .but it is just as likely that they will be spent wastefully and will leave new problems behind ,just like the railroad and the highway .
The money set aside in negotiated trade –offs and the institution that control will shape the west far beyond the immediate footprint of power plants and transmission lines .so let’s remember the effects of the railroad and the highways as we construct these new power plants in the west .
【小题1】
what was the problem caused by the construction of the railways ?
| A．small towns along the railways became abandoned . |
| B．some railroad stops remained . |
| C．land in the west was hard to manage . |
| D．land grants went into private hands. |
what is the major concern in the development of alternative energy according to the last two paragraphs ?
| A．the transmission of power | B．the use of money and power |
| C．the conservation of solar energy | D．the selection of an ideal place |
what is the author ‘s attitude towards building solar plants ?
| A．cautious | B．approving | C．doubtful | D．disapproving |
which is the best title for the passage ?
| A．how the railways have affected the west |
| B．how solar energy could reshape the west |
| C．how the effects of power plants can be reduced |
| D．how the problems of the highways have been settled |