网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
Retrofitting houses to use less energy should be a no-brainer for homeowners.1 time,money spent on ways to reduce heat loss from drauShty houses should produce a 2 return in lower fuel bills.In practice,many are cauLious.Some improvements,such as solid-wall insulation and solar panels,can take over 25 years to 3 their initial cost.Few owners are willing to wait that long:by then many are likely to have.4 and moved on.Several governments have started finance schemes designed t0 5 this problem.Since 2008 PACE programmes have offered American homeowners loans to 6.improvements,repaid through higher local taxes on the property,7 it belongs to.In Brit.ain,Lhe Green Deal offers loans over a 25-year period,with repayments added to energy bills.Countnes including France and Canada have similar 8.In theory,these schemes should boost investment in common energy-saving measures,such as extra insulation and new boilers,9 the first owner does not have to pay all the costs in advance.But enrolment rates have 10,according to Sean Kidney at the Climate Bonds Initiative,a thinktank.In Britain,just 1%of those assessed for the Creen Deal have signed up.In Berkeley,California,home of the first PACE scheme,the 11 rate is similarly low.Homeowners are 12 chiefly because the interest raLes on the loans look high.The Green Deal charges 7%;some PACE schemes a hefty 8%.As these rates are fixed for decades,they will 13 look unattractive when（as now）short-term interest rates are low.Many people als0 14 they will save enough on their energy biUs to cover the repayments.For instance,15 in Britain that installing loft insulation can cut energy bills by 20%have been dented by a government study that found it 16 gas consumption by only l.7%on average.Others fear that green loans may reduce the value of their home.In America,firms that undewrite mortgages are 17 PACE loans.Green loans have not been a failure everywhere.Around 250,000 households in Germany 18 for them each year.They do so 19 they need pay only 1%interest on them each yeu,thanks to an annual public subsidy of l.5 billion.Whether that is a（an）20 use of taxpayers'money is another question.1选？
A.On
B.In
C.Over
D.At
B.In
C.Over
D.At
参考答案
参考解析
解析：介词搭配题。on time表示“准时”；in time表示“及时”；over time表示“长期以来，随着时间流逝”；at time表示“偶尔”。符合语境的只有[c]。
更多 “Retrofitting houses to use less energy should be a no-brainer for homeowners.1 time,money spent on ways to reduce heat loss from drauShty houses should produce a 2 return in lower fuel bills.In practice,many are cauLious.Some improvements,such as solid-wall insulation and solar panels,can take over 25 years to 3 their initial cost.Few owners are willing to wait that long:by then many are likely to have.4 and moved on.Several governments have started finance schemes designed t0 5 this problem.Since 2008 PACE programmes have offered American homeowners loans to 6.improvements,repaid through higher local taxes on the property,7 it belongs to.In Brit.ain,Lhe Green Deal offers loans over a 25-year period,with repayments added to energy bills.Countnes including France and Canada have similar 8.In theory,these schemes should boost investment in common energy-saving measures,such as extra insulation and new boilers,9 the first owner does not have to pay all the costs in advance.But enrolment rates have 10,according to Sean Kidney at the Climate Bonds Initiative,a thinktank.In Britain,just 1%of those assessed for the Creen Deal have signed up.In Berkeley,California,home of the first PACE scheme,the 11 rate is similarly low.Homeowners are 12 chiefly because the interest raLes on the loans look high.The Green Deal charges 7%;some PACE schemes a hefty 8%.As these rates are fixed for decades,they will 13 look unattractive when（as now）short-term interest rates are low.Many people als0 14 they will save enough on their energy biUs to cover the repayments.For instance,15 in Britain that installing loft insulation can cut energy bills by 20%have been dented by a government study that found it 16 gas consumption by only l.7%on average.Others fear that green loans may reduce the value of their home.In America,firms that undewrite mortgages are 17 PACE loans.Green loans have not been a failure everywhere.Around 250,000 households in Germany 18 for them each year.They do so 19 they need pay only 1%interest on them each yeu,thanks to an annual public subsidy of l.5 billion.Whether that is a（an）20 use of taxpayers'money is another question.1选？A.On B.In C.Over D.At” 相关考题
考题
It took building supplies to construct these energy-saving houses. It took brains, too.A other than B morethanC rather than D less than
考题
As there is less and less coal and oil, scientists are exploring new ways of making use of ____ energy, such as sunlight, wind and water for power and fuel.A. primary B. alternative C. instant D. unique
考题
Judging from the passage, the author ______.A．suggests that New Castle is fortunateB．wonders at Wilmington's prosperityC．regrets that the two places should have become so differentD．thinks that Wilmington should not tear down old houses
考题
对话理解听力原文：W: Why should the money be deposited within such a short time?M: To avoid problems arising from fluctuations of exchange rate and to prevent possible fraud or overdrawing.Q: Why should the money be deposited within such a short time?(11)A．In order to avoid problems arising from fluctuations of exchange rate.B．In order to get more money.C．In order to use the money as soon as possible.D．In order to overdraw the money.
考题
There are different ways in which people try to deal with the problem of energy. One way is the greater production of common energy sources, such as coal, oil and gas. The trouble with these sources, however, is that they are not renewable.Another way is energy conservation ( 节能 ), which means using energy more efficiently ( 有效地 ). In some very cold countries people build special houses to save energy. They place materials between the inside and the outside of the walls of the house to keep the cold out and the warmth in. The house is heated by the lights, the body heat of the people and the other equipment in it.Finally, renewable energy sources are used even though they are often expensive to develop. One form. of these is geothermal energy. In certain parts of the world the temperature of the earth increases thirty degrees centigrade with each kilometer down. At six kilometers, therefore, it rises to nearly two hundred degrees. To get the heat, water is pumped ( 压;抽 ) down into the rocks and back up to the surface. Heat from the earth is already used in certain countries.1、How many ways of dealing with the energy problem are discussed in the text? ( )A、Two.B、Three.C、Four.D、Five.2、From the text we learn that coal( ).A、is quite easy to produceB、is not used most efficientlyC、is the most common source of energyD、could be renewed only by new technology3、The writer tells about the "special houses" because they( ).A、show the excellent skills of the buildersB、serve as an example of energy conservationC、are heated by different sources of energyD、are warmer than other types of houses4、The underlined words "geothermal energy" in the third paragraph mean ( ).A、renewable sourceB、 underground sourceC、 heat inside the earthD、 temperature of the earth5、At a place where the surface temperature is 15°C, how deep do you have to dig so as to get a temperature of 75 °C ? ( )A、One km.B、 Two km.C、 Three km.D、 Four km
考题
We were all greatly impressed by ____ houses were built there.
A、many waysB、the many waysC、many ways whichD、the many ways which
考题
To get some idea of the amount of heat the sun ________(1), think about this. If you ________(2)collect all the heat that hits the earth in a two-week period, it would equal the amount of all the other known sources and reserves of energy: wood, coal, and oil. But even these sources of energy depend ________(3) the sun for their formation. For example, a tree ________ (4) certainly never grow and provide fuel in the form. of wood were it not for the sun. Because the sun is so important in the production of all forms of heating fuel, more and more time and money are being spent ________(5) ways to change power from the sun directly into a form. of heat.1.A、gives offB、turns offC、takes offD、sets off2.A、willB、couldC、mustD、shall3.A、ofB、inC、onD、to4.A、willB、mustC、shallD、would5.A、studyB、studiedC、studyingD、being studying
考题
The woman felt badly hurt because she______.A．gave many gifts to the manB．spent a lot of time with the manC．failed to find true love from the manD．spent too much money on the phone
考题
As there is less and less coal and oil, scientists are exploring new ways of making use of _______ energy, such as sunlight, wind and water for power and fuel.A.primary
B.alternative
C.instant
D.unique
考题
Retrofitting houses to use less energy should be a no-brainer for homeowners.（1）time,money spent on ways to reduce heat loss from draughty houses should produce a（2）return in lower fuel bills.In practice,many are cautious.Some improvements,such as solid-wall insulation and solar panels,can take over 25 years to（3）their initial cost.Few owners are willing to wait that long by then many are likely to have（4）and moved on Several governments have started finance schemes designed to（5）this problem.Since 2008 PaCE programmes have offered American homeowners loans to（6）improvements,repaid through higher local taxes on the property,（7）it belongs to.In Britain,the Green Deal offers loans over a 25-year period,with repayments added to energy bills.Countries including France and Canada have similar（8）In theory,these schemes should boost investment in common energy-saving measures,such as extra insulation and new boilers,（9）the first owner does not have to pay all the costs in advance But enrolment rates have（10）,according to Sean Kidney at the Climate Bonds Initiative,a think tank.In Britain,just 1%of those assesseed for the Green Deal have signed up.In Berkeley,California,home of the first PACe scheme,the（11）rate is similarly low.Homeowners are（12）chiefly because the interest rates on the loans look high.The Green Deal charges 7%;some PaCe schemes a hefty 8%.As these rates are fixed for decades,they will（13）look unattractive when（as now）short-term interest rates are low Many people also（14）they will save enough on their energy bills to cover the repayments Fc or instance（15）in britain that installing loft insulation can cut energy bills by 20%have been dented by a government study that found it（16）gas consumption by only 1.7%on average.Others fear that green loans may reduce the value of their home.In America,firms that underwn mortgages are（17）PACE loans Green loans have not been a failure everywhere.Around 250,000 households in Germany（18）for them each year.They do so（19）they need pay only 1%interest on them each year thanks to an annual public subsidy of 1.5 billion.Whether that is a（an）（20）use of taxpayers’money is another question（16）选？A.reduced
B.produced
C.increased
D.decline
考题
Retrofitting houses to use less energy should be a no-brainer for homeowners.（1）time,money spent on ways to reduce heat loss from draughty houses should produce a（2）return in lower fuel bills.In practice,many are cautious.Some improvements,such as solid-wall insulation and solar panels,can take over 25 years to（3）their initial cost.Few owners are willing to wait that long by then many are likely to have（4）and moved on Several governments have started finance schemes designed to（5）this problem.Since 2008 PaCE programmes have offered American homeowners loans to（6）improvements,repaid through higher local taxes on the property,（7）it belongs to.In Britain,the Green Deal offers loans over a 25-year period,with repayments added to energy bills.Countries including France and Canada have similar（8）In theory,these schemes should boost investment in common energy-saving measures,such as extra insulation and new boilers,（9）the first owner does not have to pay all the costs in advance But enrolment rates have（10）,according to Sean Kidney at the Climate Bonds Initiative,a think tank.In Britain,just 1%of those assesseed for the Green Deal have signed up.In Berkeley,California,home of the first PACe scheme,the（11）rate is similarly low.Homeowners are（12）chiefly because the interest rates on the loans look high.The Green Deal charges 7%;some PaCe schemes a hefty 8%.As these rates are fixed for decades,they will（13）look unattractive when（as now）short-term interest rates are low Many people also（14）they will save enough on their energy bills to cover the repayments Fc or instance（15）in britain that installing loft insulation can cut energy bills by 20%have been dented by a government study that found it（16）gas consumption by only 1.7%on average.Others fear that green loans may reduce the value of their home.In America,firms that underwn mortgages are（17）PACE loans Green loans have not been a failure everywhere.Around 250,000 households in Germany（18）for them each year.They do so（19）they need pay only 1%interest on them each year thanks to an annual public subsidy of 1.5 billion.Whether that is a（an）（20）use of taxpayers’money is another question（2）选？A.handsome
B.delicate
C.splendid
D.trivial
考题
Passage Four
How can we get rid of garbage?Do we have enough energy sources to meet our future energy needs?
These are two important questions that many people are asking today．Some people think that man might be able to solve both problems at the same time,They suggest using garbage as an energy source,and at the same time it can save the land to hold garbage．
For a long time,people buried garbage or dumped it on empty land．Now,empty land is scarce．But more and more garbage is produced each year．However,garbage can be a good fuel to use．The things in garbage do not look like coal,petroleum,or natural gas;but they are chemically similar to these fossil fuels．As we use up our fossil-fuel supplies,we might be able to use garbage as an energy source．Burning garbage is not a new idea．Some cities in Europe and the United States have been burning garbage for years．The heat that is produced by burning garbage is used to boil water．The steam that is produced is used to make electricity or to heat nearby,buildings．In Paris,France,some power plants burn almost 2 million metric tons of the cities garbage each year．The amount of energy produced is about the same as would be produced by burning almost a half million barrels of oil．
Our fossil fuel supplies are limited．Burning garbage might be one kind of energy source that we can use to help meet our energy needs．This method could also reduce the amount if garbage piling up on the earth．
The best title for the passage may be______A.Garbage and the Earth
B.Fossil Fuel and Garbage
C.Land and Garbage
D.Garbage?Energy Source
考题
Passage Four
How can we get rid of garbage?Do we have enough energy sources to meet our future energy needs?
These are two important questions that many people are asking today．Some people think that man might be able to solve both problems at the same time,They suggest using garbage as an energy source,and at the same time it can save the land to hold garbage．
For a long time,people buried garbage or dumped it on empty land．Now,empty land is scarce．But more and more garbage is produced each year．However,garbage can be a good fuel to use．The things in garbage do not look like coal,petroleum,or natural gas;but they are chemically similar to these fossil fuels．As we use up our fossil-fuel supplies,we might be able to use garbage as an energy source．Burning garbage is not a new idea．Some cities in Europe and the United States have been burning garbage for years．The heat that is produced by burning garbage is used to boil water．The steam that is produced is used to make electricity or to heat nearby,buildings．In Paris,France,some power plants burn almost 2 million metric tons of the cities garbage each year．The amount of energy produced is about the same as would be produced by burning almost a half million barrels of oil．
Our fossil fuel supplies are limited．Burning garbage might be one kind of energy source that we can use to help meet our energy needs．This method could also reduce the amount if garbage piling up on the earth．
According to the passage,using garbage is______A.for heating in France each year
B.a new way in a modern society
C.a good way to solve the problem of energy shortage
D.too expensive as an energy source
考题
Passage Four
How can we get rid of garbage?Do we have enough energy sources to meet our future energy needs?
These are two important questions that many people are asking today．Some people think that man might be able to solve both problems at the same time,They suggest using garbage as an energy source,and at the same time it can save the land to hold garbage．
For a long time,people buried garbage or dumped it on empty land．Now,empty land is scarce．But more and more garbage is produced each year．However,garbage can be a good fuel to use．The things in garbage do not look like coal,petroleum,or natural gas;but they are chemically similar to these fossil fuels．As we use up our fossil-fuel supplies,we might be able to use garbage as an energy source．Burning garbage is not a new idea．Some cities in Europe and the United States have been burning garbage for years．The heat that is produced by burning garbage is used to boil water．The steam that is produced is used to make electricity or to heat nearby,buildings．In Paris,France,some power plants burn almost 2 million metric tons of the cities garbage each year．The amount of energy produced is about the same as would be produced by burning almost a half million barrels of oil．
Our fossil fuel supplies are limited．Burning garbage might be one kind of energy source that we can use to help meet our energy needs．This method could also reduce the amount if garbage piling up on the earth．
What is the author's attitude?A.Delighte
B.Sad
C.Agree in
D.Disagree in
考题
Retrofitting houses to use less energy should be a no-brainer for homeowners.1 time,money spent on ways to reduce heat loss from drauShty houses should produce a 2 return in lower fuel bills.In practice,many are cauLious.Some improvements,such as solid-wall insulation and solar panels,can take over 25 years to 3 their initial cost.Few owners are willing to wait that long:by then many are likely to have.4 and moved on.Several governments have started finance schemes designed t0 5 this problem.Since 2008 PACE programmes have offered American homeowners loans to 6.improvements,repaid through higher local taxes on the property,7 it belongs to.In Brit.ain,Lhe Green Deal offers loans over a 25-year period,with repayments added to energy bills.Countnes including France and Canada have similar 8.In theory,these schemes should boost investment in common energy-saving measures,such as extra insulation and new boilers,9 the first owner does not have to pay all the costs in advance.But enrolment rates have 10,according to Sean Kidney at the Climate Bonds Initiative,a thinktank.In Britain,just 1%of those assessed for the Creen Deal have signed up.In Berkeley,California,home of the first PACE scheme,the 11 rate is similarly low.Homeowners are 12 chiefly because the interest raLes on the loans look high.The Green Deal charges 7%;some PACE schemes a hefty 8%.As these rates are fixed for decades,they will 13 look unattractive when（as now）short-term interest rates are low.Many people als0 14 they will save enough on their energy biUs to cover the repayments.For instance,15 in Britain that installing loft insulation can cut energy bills by 20%have been dented by a government study that found it 16 gas consumption by only 1.7%on average.Others fear that green loans may reduce the value of their home.In America,firms that undewrite mortgages are 17 PACE loans.Green loans have not been a failure everywhere.Around 250,000 households in Germany 18 for them each year.They do so 19 they need pay only 1%interest on them each yeu,thanks to an annual public subsidy of 1.5 billion.Whether that is a（an）20 use of taxpayers'money is another question.14选？A.coniend
B.doubt
C.concliide
D.debate
考题
Retrofitting houses to use less energy should be a no-brainer for homeowners.1 time,money spent on ways to reduce heat loss from drauShty houses should produce a 2 return in lower fuel bills.In practice,many are cauLious.Some improvements,such as solid-wall insulation and solar panels,can take over 25 years to 3 their initial cost.Few owners are willing to wait that long:by then many are likely to have.4 and moved on.Several governments have started finance schemes designed t0 5 this problem.Since 2008 PACE programmes have offered American homeowners loans to 6.improvements,repaid through higher local taxes on the property,7 it belongs to.In Brit.ain,Lhe Green Deal offers loans over a 25-year period,with repayments added to energy bills.Countnes including France and Canada have similar 8.In theory,these schemes should boost investment in common energy-saving measures,such as extra insulation and new boilers,9 the first owner does not have to pay all the costs in advance.But enrolment rates have 10,according to Sean Kidney at the Climate Bonds Initiative,a thinktank.In Britain,just 1%of those assessed for the Creen Deal have signed up.In Berkeley,California,home of the first PACE scheme,the 11 rate is similarly low.Homeowners are 12 chiefly because the interest raLes on the loans look high.The Green Deal charges 7%;some PACE schemes a hefty 8%.As these rates are fixed for decades,they will 13 look unattractive when（as now）short-term interest rates are low.Many people als0 14 they will save enough on their energy biUs to cover the repayments.For instance,15 in Britain that installing loft insulation can cut energy bills by 20%have been dented by a government study that found it 16 gas consumption by only l.7%on average.Others fear that green loans may reduce the value of their home.In America,firms that undewrite mortgages are 17 PACE loans.Green loans have not been a failure everywhere.Around 250,000 households in Germany 18 for them each year.They do so 19 they need pay only 1%interest on them each yeu,thanks to an annual public subsidy of l.5 billion.Whether that is a（an）20 use of taxpayers'money is another question.2选？A.handsome
B.delicate
C.splendid
D.trivial
考题
Our house is about a mile away from the railway station and there are not many houses（）A、in betweenB、far apartC、among themD、from each other
考题
Time is money! We should（）our time.A、be fit forB、make good use ofC、play a part ofD、take the place of
考题
Our house is about a mile from the railway station and there are not many houses（）.A、in betweenB、far apartC、among themD、from each other
考题
单选题While a ship with twin screw is making a turn, in order to prevent overload, the duty engineer should （）A
reduce the fuel feeding of main engine of inner propellerB
reduce the fuel feeding of main engine of outer propellerC
firstly reduce the fuel of main engine of inner propeller, then reduce the fuel feeding of engine of outer propellerD
reduce fuel feeding of two engines at the same time
考题
单选题To conserve energy, estate developers are encouraged to build houses that can retain heat in winter.A
attainB
keepC
releaseD
generate
考题
单选题Time is money! We should（）our time.A
be fit forB
make good use ofC
play a part ofD
take the place of
考题
问答题Fuel Cells: 21st Century Electricity The 21st century’s leading energy source may very well depend on the development of a technology that was first discovered in 1839. Indeed, many experts believe that the future of electricity generation will not come from further refinement of solar, wind, coal or nuclear energy, but from fuel cells. Among the various types of fuel cells, the ceramic or solid oxide fuel cell promises to achieve the greatest efficiency of conversion of fossil fuels such as gas and coal to electricity while producing only very low levels of pollutants. To this end, a consortium comprising five leading organizations has established Ceramic Fuels Ltd, initially to expand fuel cell research and development and secondly, to bring the technology to commercial application. Ceramic fuel cells are electrochemical devices that directly convert fuels such as gasified coal or natural gas into electricity without the limitation of the Carnot cycle (an ideal thermodynamic cycle in which heat is taken onto a working fluid at a constant upper temperature and rejected at a constant lower temperature). In many respects, fuel cells work like batteries. As long as they are constantly supplied with fuel and oxidant, fuel cells can continuously produce power, removing the need for recharging. Fuel cells offer several advantages over traditional thermal power plants. The major difference between these two power generators is that the chemical energy of the fuel cell is converted directly to electrical power without intermediate conversion first to heat. The efficiency of a coal-fired thermal plant is typically in the range of 30%-35%. In a combined cycle gas turbine system running on natural gas, the maximum efficiency is in the range 45%-50%. Many experts believe high temperature fuel cells could reach efficiencies of 80%-85%. Ceramic fuel cells thus offer a more efficient and less polluting alternative to current power generation technologies. By-products from fuel cells are high quality heat, carbon dioxide and steam. The temperature of the exhaust gases is well above 500℃, meaning that solid oxide fuel cells are very attractive for electricity and heat generation as, in addition to supplying electricity, the leftover amounts of heat created during the process could be used to produce heat for industries, provide hot water supplies or warm buildings. Fuel cell technology is not new. In fact, the principles of fuel cell operation were first reported by British scientist Sir William Grove in 1839. His prototype used dilute sulphuric acid and operated at room temperature. Ceramic fuel cells developed much later, with the first one operating at 1000°C in 1937. Ceramic fuel cells offer many advantages over other energy systems: ● they have the potential to produce electricity efficient from several fuel sources ● they can generate large amounts of electricity ● they are relatively quick to install Fuel cell research and development is extremely competitive worldwide, with the USA, Japan and some European countries leading the charge to commercialize this promising technology. For instance, a Dutch Belgian company has developed a fuel cell for a Volkswagen van and is also working on a larger unit to power a bus. Additionally, a German company is working on a fuel cell for the European space shuttle program and for submarines, while a Canadian company is evaluating a fuel cell to be used in small buses. Recent reports point to promising large international markets for ceramic fuel cells. Prospects for fuel cells in South East Asian markets appear good. Several countries, including Indonesia, Thailand and The Philippines are expected to demonstrate high rates of growth in demand for power an encouraging situation for those countries quick enough to develop and commercialize fuel cell technology. Energy is a vital component of a technology-based society and the growing need for electricity generation by the most efficient method will ensure a promising future for ceramic fuel cell technology. The Ceramic Fuel Cells Ltd initiative represents a major collaborative venture between public and private sectors. It is envisaged that this venture will go a long way towards achieving a greater efficiency of energy use worldwide. Do the following statements reflect the claims of the writer in the Reading Passage? YES if the statement reflects the claims of the writer NO if the statement contradicts the claims of the writer NOT GIVEN if it is impossible to say what the writer thinks about this Statements: 1．Sir William Grove was a physicist. 2．Future transport vehicles may be powered by fuel cells. 3．European companies were first in the race to develop fuel cell technology. 4．Some rapidly developing South East Asian countries will soon market fuel cells. 5．Cooperation between private companies and governments will encourage wider use of efficient energy sources.
考题
问答题Practice 4 You should spend about 40 minutes on this task. Write about the following topic: Money for postgraduate research is limited. Therefore some people think that financial support from governments should only be provided for scientific research rather than research for less useful subjects. Do you agree or disagree? You should write at least 250 words.
考题
问答题Practice 3 Energy-saving vehicles were part of the Green Transportation Festival in the US in 2003. The vehicles shown were designed to reduce America’s dependence on oil and help the environment. There are exhibits of cars and buses at the festivals. Most of them use little gas or use another kind of fuel such as natural gas. People are also urged to consider simpler ways of getting around, such as walking, biking and using public transportation systems. The United States has less than five per cent of the world’s population, but uses about twenty-five per cent of the world’s oil. More than half of the nation’s oil is imported. Most of it goes to transportation. Festival organizers said progress in technology was making it possible for Americans to reduce their dependence on oil. That is because the kinds of energy-saving vehicles are increasing. Efforts to reduce oil imports in the United States would also have important environmental benefits. The burning of oil as fuel is responsible for gases blamed for climate change. When gasoline is burned in cars, it also pollutes the air. This leads to many health problems.
考题
单选题When preparing a ship for heavy weather，fuel oil day tanks should be（）.A
pumped overboard to calm the seasB
drained to the lower hull to reduce free surfacesC
filled to ensure that sufficient fuel oil is available during a lengthy emergencyD
partially drained to increase free surfaces in order to reduce motions
考题
问答题Practice 3 You should spend about 40 minutes on this task. Write about the following topic: Fossil fuels, such as coal, oil, natural gas, are used in many countries. But in some countries, the use of alternative sources of energy, including wind and solar power, are encouraged. Is this trend a positive or a negative development? You should write at least 250 words.
热门标签
最新试卷