单选题It can be inferred from the passage that more people will ______.Ause both non-renewable and renewable energyBstick to the use of local utilityCnot be used to renewable energyDuse renewable energy only
单选题
It can be inferred from the passage that more people will ______.
A
use both non-renewable and renewable energy
B
stick to the use of local utility
C
not be used to renewable energy
D
use renewable energy only
参考解析
解析：
题目问的是：从文中可以推断出更多的人愿意怎么做？因为绿色能源的缺陷导致应用的不完整，可想而知，人们希望结合使用可再生与不可再生能源。故选A。
题目问的是：从文中可以推断出更多的人愿意怎么做？因为绿色能源的缺陷导致应用的不完整，可想而知，人们希望结合使用可再生与不可再生能源。故选A。
相关考题：
29． The writer thinks that people in large cities should __________ ．A． stop the used water from getting into undergroundB． only use the water from the riversC． make their used water clean againD． use as much sea water as possible
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
It can be inferred from the passage that the real danger comes from ______.A)the asbestos dust that people take inB) the contact of the worker's skin with asbestos particlesC) the inferior quality of the asbestos itselfD)the excessive use of man made asbestos material
共用题干第一篇Renewable Energy SourcesToday petroleum（石油）provides around 40% of the world's energy needs, mostly fuelling automobiles.Coal is still used,mostly in power stations,to cover one-quarter of our energy needs,but it is the least efficient,unhealthiest and most environmentally damaging fossil fuel（矿物燃料）.Natural gas reserves could fill some of the gap from oil,but reserves of that will not last into the 22nd century either. Most experts predict we will exhaust easily accessible reserves within 50 years.Less-polluting renewable energy sources offer a more practical long-term energy solution."Renewable"refers to the fact that these resources are not used faster than they can be replaced.Hydroelectric（水力发电的）power is now the most common form of renewable energy,suDDIvina around 20%of world electricity.China's Three Gorges Dam is the largest ever. At five times the size of the US's Hoover Dam, its 26 turbines（涡轮机）will generate the equivalent energy of 18 coal-fired power stations.It will satisfy 3% of China's entireelectricity demand.In 2003. the first commercial power station to use tidal（潮汐的）currents in the open sea opened in Norway. It is designed like windmill（风车）,but others take the torm ofturbines.As prices fall,wind power has become the fastest growing type of electricity generation一quadrupling（翻两番）worldwide between 1999 and 2005. Modern wind farms consist of turbines that generate electricity.Though it will be more expensive,there is more than enoucih wind to provide the world's entire energy needs.Wind farms come in onshore and offshore forms.They can often end up at spots of natural beauty,and are often unpopular with residents.And turbines are not totally harmless一they can interfere with radar, alter climate and kill sea birds.Scotland is building Europe's largest wind tarm,wnicn will power 200.000 homes.The UK's goal is to generate one-fifth of power from renewable sources,mainly wind,by 2020.But this may cause problems,because wind is unreiiable.Which country took the lead in making use of tidal currents to produce power in 2003?A:The UK. B:China.C:Norway. D:TheUS.
共用题干Renewable Energy SourcesToday petroleum provides around 40%of the world's energy needs,mostly fuelling automobiles .Coal is still used,mostly in power stations,to cover one-quarter of our energy needs,but it is the least efficient,unhealthiest and most environmentally damaging fossil fuel.Natural gas reserves could plug some of the gap from oil,but reserves of that will not last into the 22nd century either.Most experts predict we will exhaust easily accessible reserves within 50 years.We could fasi reach an energy crisis.We need to rapidly develop sustainable solutions to fuel our future.Lesspolluting renewable energy sources offer a more practical long-term energy solution.They may benefit the world's poor too."Renewable"refers to the fact that these resources are not used faster than they can be replaced.The Chinese and Romans used watermills over 2,000 years ago. But the first hydroelectric dam was built in England in 1870.Hydroelectric power is now the most common form of renewable energy,supplying around 20%of world electricity. China's Three Gorges Dam,which has just been completed,is the largest ever. At five times the size of the US's Hoover Dam,its 26 turbines will generate the equivalent energy of 1 8 coal-fired power stations.It will satisfy 3%of China's entire electricity demand.Surprisingly,some argue that hydroelectric dams significantly contribute green- house gases.In 2003,the first commercial power station to harness tidal currents in the open sea opened in Norway .It is designed like windmill,but others take the form of turbines.As prices fall,wind power has become the fastest growing type of electricity generation-quadrupling worldwide between 1999 and 2005 .Modern wind farms consist of turbines that gener- ate electricity.Though it will be more expensive,there is more than enough wind to provide the world's entire energy needs. Wind farms come in onshore and offshore forms.They can often end up at spots of natural beauty,and are often unpopular with residents.And turbines are not totally benignthey can interfere with radar and leave a significant ecological footprint,altering climate and killing sea birds.Migrating birds may have more luck avoiding them.Scotland is buildingEurope's largest wind farm,which will power 200,000 homes.The UK's goal is to generate one- fifth of power from renewable sources,mainly wind,by 2020 .But this may cause problems,be- cause wind is unreliable. What are the energy resources that are renewable according to the article?A: Petroleum and coal.B: Natural gas.C: Wind and water.D: A and B.
共用题干Renewable Energy SourcesToday petroleum provides around 40%of the world's energy needs,mostly fuelling automobiles.Coal is still used,mostly in power stations,to cover one-quarter of our energy needs,but it is the least efficient, unhealthiest and most environmentally damaging fossil fuel.Natural gas reserves could plug（填补）some of the gap from oil,but reserves of that will not last into the 22nd century either.Most experts predict we will exhaust easily accessible reserves within 50 years.We could fast reach an energy crisis.We need to rapidly develop sustainable solutions to fuel our future.Less-polluting renewable energy sources offer a more practical long-term energy solution.They may benefit the world's poor too."Renewable"refers to the fact that these resources are not used faster than they can be replaced.The Chinese and Romans used watermills over 2,000 years ago.But the first hydroelectric dam was built in England in 1870.Hydroelectric power is now the most common form of renewable energy,supplying around 20%of world electricity.China's Three Gorges Dam,which has just been completed, is the largest ever.At five times the size of the US ' s Hoover Dam , its 26 turbines（涡轮机）will generate the equivalent energy of 18 coal-fired power stations.It will satisfy 3%of China's entire electricity demand.In 2003,the first commercial power station to harness tidal currents in the open sea opened in Norway. It is designed like windmill,but others take the form of turbines.As prices fall,wind power has become the fastest growing type of electricity generation-quadrupling worldwide between 1999 and 2005.Modern wind farms consist of turbines that generate electricity.Though it will be more expensive,there is more than enough wind to provide the world's entire energy needs.Wind farms come in onshore and offshore forms.They can often end up at spots of natural beauty,and are often unpopular with residents.And turbines are not totally benign-they can interfere with radar and leave a significant ecological footprint,altering climate and killing sea birds.Migrating birds may have more luck avoiding them.Scotland is building Europe's largest wind farm,which will power 200 ,000 homes.The UK's goal is to generate one-fifth of power from renewable sources,mainly wind,by 2020.But this may cause problems,because wind is unreliable.Which is the country with the first commercial power station that makes use of ocean currents produced by tides?A:China. B:Norway.C:England. D:America.
共用题干Renewable Energy SourcesToday petroleum provides around 40%of the world's energy needs,mostly fuelling automobiles .Coal is still used,mostly in power stations,to cover one-quarter of our energy needs,but it is the least efficient,unhealthiest and most environmentally damaging fossil fuel.Natural gas reserves could plug some of the gap from oil,but reserves of that will not last into the 22nd century either.Most experts predict we will exhaust easily accessible reserves within 50 years.We could fasi reach an energy crisis.We need to rapidly develop sustainable solutions to fuel our future.Lesspolluting renewable energy sources offer a more practical long-term energy solution.They may benefit the world's poor too."Renewable"refers to the fact that these resources are not used faster than they can be replaced.The Chinese and Romans used watermills over 2,000 years ago. But the first hydroelectric dam was built in England in 1870.Hydroelectric power is now the most common form of renewable energy,supplying around 20%of world electricity. China's Three Gorges Dam,which has just been completed,is the largest ever. At five times the size of the US's Hoover Dam,its 26 turbines will generate the equivalent energy of 1 8 coal-fired power stations.It will satisfy 3%of China's entire electricity demand.Surprisingly,some argue that hydroelectric dams significantly contribute green- house gases.In 2003,the first commercial power station to harness tidal currents in the open sea opened in Norway .It is designed like windmill,but others take the form of turbines.As prices fall,wind power has become the fastest growing type of electricity generation-quadrupling worldwide between 1999 and 2005 .Modern wind farms consist of turbines that gener- ate electricity.Though it will be more expensive,there is more than enough wind to provide the world's entire energy needs. Wind farms come in onshore and offshore forms.They can often end up at spots of natural beauty,and are often unpopular with residents.And turbines are not totally benignthey can interfere with radar and leave a significant ecological footprint,altering climate and killing sea birds.Migrating birds may have more luck avoiding them.Scotland is buildingEurope's largest wind farm,which will power 200,000 homes.The UK's goal is to generate one- fifth of power from renewable sources,mainly wind,by 2020 .But this may cause problems,be- cause wind is unreliable. According to the article,resources such as wind______.A: are sustainable hut not replaceableB: are renewable so sustainableC: are sustainable so renewableD: are irreplaceable
Passage FourHow 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 EarthB.Fossil Fuel and GarbageC.Land and GarbageD.Garbage?Energy Source
Passage FourHow 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 yearB.a new way in a modern societyC.a good way to solve the problem of energy shortageD.too expensive as an energy source
共用题干第三篇Renewable Energy SourcesToday petroleum（石油）provides around 40% of the world's energy needs , mostly fuelling automobiles.Coal is still used,mostly in power stations,to cover one一quarter of our energy needs,but it is the least efficient,unhealthiest and most environmentally damaging fossil fuel（矿物燃料）.Natural gas reserves could fill some of the gap from oil, but reserves of that will not last into the 22nd century either. Most experts predict we will exhaust easily accessible reserves within 50 years.Less-polluting renewable energy sources offer a more practical long-term energy solution. "Renewable"refers to the fact that these resources are not used faster than they can be replaced.Hydroelectric（水力发电的）power is now the most common form of renewable energy, supplying around 20%of world electricity.China's Three Gorges Dam is the largest ever. At five times the size of the US's Hoover Dam , its 26 turbines（涡轮机）will generate theequivalent energy of 18 coal-fired power stations.It will satisfy 3% of China's entire electricity demand.In 2003, the first commercial power station to use tidal（潮汐的）currents in the open sea opened in Norway. It is designed like windmill（风车）,but others take the form of turbines.As prices fall,wind power has become the fastest growing type of electricity generation一 quadrupling（翻两番）worldwide between 1999 and 2005. Modern wind farms consist of turbines that generate electricity.Though it will be more expensive,there is more than enough wind to provide the world's entire energy needs.Wind farms come in onshore and offshore forms.They can often end up at spots of natural beauty,and are often unpopular with residents.And turbines are not totally harmless一they can intertere with radar,alter climate and kill sea birds.Scotland is building Europe's largest wind farm,which will power 200,000 homes.The UK's goal is to generate one-fifth of power from renewable sources, mainly wind,by 2020.But this may cause problems,because wind is unreliable.One of the problems with wind farms is thatA:there is not enough wind.B:wind is not reliable.C:they can only be built on the sea.D:they might influence the world economy.
共用题干第三篇Renewable Energy SourcesToday petroleum（石油）provides around 40% of the world's energy needs , mostly fuelling automobiles.Coal is still used,mostly in power stations,to cover one一quarter of our energy needs,but it is the least efficient,unhealthiest and most environmentally damaging fossil fuel（矿物燃料）.Natural gas reserves could fill some of the gap from oil, but reserves of that will not last into the 22nd century either. Most experts predict we will exhaust easily accessible reserves within 50 years.Less-polluting renewable energy sources offer a more practical long-term energy solution. "Renewable"refers to the fact that these resources are not used faster than they can be replaced.Hydroelectric（水力发电的）power is now the most common form of renewable energy, supplying around 20%of world electricity.China's Three Gorges Dam is the largest ever. At five times the size of the US's Hoover Dam , its 26 turbines（涡轮机）will generate theequivalent energy of 18 coal-fired power stations.It will satisfy 3% of China's entire electricity demand.In 2003, the first commercial power station to use tidal（潮汐的）currents in the open sea opened in Norway. It is designed like windmill（风车）,but others take the form of turbines.As prices fall,wind power has become the fastest growing type of electricity generation一 quadrupling（翻两番）worldwide between 1999 and 2005. Modern wind farms consist of turbines that generate electricity.Though it will be more expensive,there is more than enough wind to provide the world's entire energy needs.Wind farms come in onshore and offshore forms.They can often end up at spots of natural beauty,and are often unpopular with residents.And turbines are not totally harmless一they can intertere with radar,alter climate and kill sea birds.Scotland is building Europe's largest wind farm,which will power 200,000 homes.The UK's goal is to generate one-fifth of power from renewable sources, mainly wind,by 2020.But this may cause problems,because wind is unreliable.Which country took the lead in making use of tidal currents to produce power in 2003?A:TheUK. B:China.C:Norway. D:TheUS.
共用题干第三篇Renewable Energy SourcesToday petroleum（石油）provides around 40% of the world's energy needs , mostly fuelling automobiles.Coal is still used,mostly in power stations,to cover one一quarter of our energy needs,but it is the least efficient,unhealthiest and most environmentally damaging fossil fuel（矿物燃料）.Natural gas reserves could fill some of the gap from oil, but reserves of that will not last into the 22nd century either. Most experts predict we will exhaust easily accessible reserves within 50 years.Less-polluting renewable energy sources offer a more practical long-term energy solution. "Renewable"refers to the fact that these resources are not used faster than they can be replaced.Hydroelectric（水力发电的）power is now the most common form of renewable energy, supplying around 20%of world electricity.China's Three Gorges Dam is the largest ever. At five times the size of the US's Hoover Dam , its 26 turbines（涡轮机）will generate theequivalent energy of 18 coal-fired power stations.It will satisfy 3% of China's entire electricity demand.In 2003, the first commercial power station to use tidal（潮汐的）currents in the open sea opened in Norway. It is designed like windmill（风车）,but others take the form of turbines.As prices fall,wind power has become the fastest growing type of electricity generation一 quadrupling（翻两番）worldwide between 1999 and 2005. Modern wind farms consist of turbines that generate electricity.Though it will be more expensive,there is more than enough wind to provide the world's entire energy needs.Wind farms come in onshore and offshore forms.They can often end up at spots of natural beauty,and are often unpopular with residents.And turbines are not totally harmless一they can intertere with radar,alter climate and kill sea birds.Scotland is building Europe's largest wind farm,which will power 200,000 homes.The UK's goal is to generate one-fifth of power from renewable sources, mainly wind,by 2020.But this may cause problems,because wind is unreliable.China's Three Gorges DamA:is the first hydroelectric dam in the world.B:is of the same size as the US's Hoover Dam.C:can generate around 3%of world electricity.D:is the largest hydroelectric dam in the world.
共用题干第三篇Renewable Energy SourcesToday petroleum（石油）provides around 40% of the world's energy needs , mostly fuelling automobiles.Coal is still used,mostly in power stations,to cover one一quarter of our energy needs,but it is the least efficient,unhealthiest and most environmentally damaging fossil fuel（矿物燃料）.Natural gas reserves could fill some of the gap from oil, but reserves of that will not last into the 22nd century either. Most experts predict we will exhaust easily accessible reserves within 50 years.Less-polluting renewable energy sources offer a more practical long-term energy solution. "Renewable"refers to the fact that these resources are not used faster than they can be replaced.Hydroelectric（水力发电的）power is now the most common form of renewable energy, supplying around 20%of world electricity.China's Three Gorges Dam is the largest ever. At five times the size of the US's Hoover Dam , its 26 turbines（涡轮机）will generate theequivalent energy of 18 coal-fired power stations.It will satisfy 3% of China's entire electricity demand.In 2003, the first commercial power station to use tidal（潮汐的）currents in the open sea opened in Norway. It is designed like windmill（风车）,but others take the form of turbines.As prices fall,wind power has become the fastest growing type of electricity generation一 quadrupling（翻两番）worldwide between 1999 and 2005. Modern wind farms consist of turbines that generate electricity.Though it will be more expensive,there is more than enough wind to provide the world's entire energy needs.Wind farms come in onshore and offshore forms.They can often end up at spots of natural beauty,and are often unpopular with residents.And turbines are not totally harmless一they can intertere with radar,alter climate and kill sea birds.Scotland is building Europe's largest wind farm,which will power 200,000 homes.The UK's goal is to generate one-fifth of power from renewable sources, mainly wind,by 2020.But this may cause problems,because wind is unreliable.According to the passage,resources like wind areA:renewable. B:recyclable.C:damaging. D:scarce.
共用题干Renewable Energy SourcesToday petroleum（石油）provides around 40% of the world's energy needs, mostly fuelling automobiles .Coal is still used,mostly in power stations,to cover one-quarter of our energy needs, but it is the least efficient, unhealthiest and most environmentally damaging fossil fuel（矿物燃料）.Natural gas reserves could fill some of the gap from oil,but reserves of that will not last into the 22nd century either. Most experts predict we will exhaust easily accessible reserves within 50 years. Less-polluting renewable energy sources offer a more practical long-term energy solution. "Renewable"refers to the fact that these resources are not used faster than they can be replaced.Hydroelectric（水力发电的）power is now the most common form of renewable energy , supplying around 20% of world electricity.China's Three Gorges Dam is the largest ever. At five times the size of the U. S. 's Hoover Dam,its 26 turbines (涡轮机）will generate the equivalent energy of 18 coal-fired power stations. It will satisfy 3%of China's entire electricity demand.In 2003,the first commercial power station to use tidal（潮汐的）currents in the open sea opened in Norway. It is designed like windmill（风车）,but others take the form of turbines.As prices fall,wind power has become the fastest growing type of electricity generation-quadrupling（翻两番）worldwide between 1 999 and 2005 . Modern wind farms consist of turbines that generate electricity. Though it will be more expensive,there is more than enough wind to provide the world's entire energy needs.Wind farms come in onshore and offshore forms. They can often end up at spots of natural beauty,and are often unpopular with residents. And turbines are not totally harmless-they can interfere with radar,alter climate and kill sea birds.Scotland is building Europe's largest wind farm,which will power 200 ,000 homes. The U.K. 's goal is to generate one-fifth of power from renewable sources,mainly wind,by 2020 .But this may cause problems, because wind is unreliable. According to the passage,resources like wind are______.A: renewableB: recyclableC: damagingD: scarce
共用题干Renewable Energy SourcesToday petroleum（石油）provides around 40% of the world's energy needs, mostly fuelling automobiles .Coal is still used,mostly in power stations,to cover one-quarter of our energy needs, but it is the least efficient, unhealthiest and most environmentally damaging fossil fuel（矿物燃料）.Natural gas reserves could fill some of the gap from oil,but reserves of that will not last into the 22nd century either. Most experts predict we will exhaust easily accessible reserves within 50 years. Less-polluting renewable energy sources offer a more practical long-term energy solution. "Renewable"refers to the fact that these resources are not used faster than they can be replaced.Hydroelectric（水力发电的）power is now the most common form of renewable energy , supplying around 20% of world electricity.China's Three Gorges Dam is the largest ever. At five times the size of the U. S. 's Hoover Dam,its 26 turbines (涡轮机）will generate the equivalent energy of 18 coal-fired power stations. It will satisfy 3%of China's entire electricity demand.In 2003,the first commercial power station to use tidal（潮汐的）currents in the open sea opened in Norway. It is designed like windmill（风车）,but others take the form of turbines.As prices fall,wind power has become the fastest growing type of electricity generation-quadrupling（翻两番）worldwide between 1 999 and 2005 . Modern wind farms consist of turbines that generate electricity. Though it will be more expensive,there is more than enough wind to provide the world's entire energy needs.Wind farms come in onshore and offshore forms. They can often end up at spots of natural beauty,and are often unpopular with residents. And turbines are not totally harmless-they can interfere with radar,alter climate and kill sea birds.Scotland is building Europe's largest wind farm,which will power 200 ,000 homes. The U.K. 's goal is to generate one-fifth of power from renewable sources,mainly wind,by 2020 .But this may cause problems, because wind is unreliable. According to the passage,which of the following is the most polluting energy resource?A: Petroleum.B: Coal.C: Natural gas.D: Water.
共用题干Renewable Energy SourcesToday petroleum（石油）provides around 40% of the world's energy needs, mostly fuelling automobiles .Coal is still used,mostly in power stations,to cover one-quarter of our energy needs, but it is the least efficient, unhealthiest and most environmentally damaging fossil fuel（矿物燃料）.Natural gas reserves could fill some of the gap from oil,but reserves of that will not last into the 22nd century either. Most experts predict we will exhaust easily accessible reserves within 50 years. Less-polluting renewable energy sources offer a more practical long-term energy solution. "Renewable"refers to the fact that these resources are not used faster than they can be replaced.Hydroelectric（水力发电的）power is now the most common form of renewable energy , supplying around 20% of world electricity.China's Three Gorges Dam is the largest ever. At five times the size of the U. S. 's Hoover Dam,its 26 turbines (涡轮机）will generate the equivalent energy of 18 coal-fired power stations. It will satisfy 3%of China's entire electricity demand.In 2003,the first commercial power station to use tidal（潮汐的）currents in the open sea opened in Norway. It is designed like windmill（风车）,but others take the form of turbines.As prices fall,wind power has become the fastest growing type of electricity generation-quadrupling（翻两番）worldwide between 1 999 and 2005 . Modern wind farms consist of turbines that generate electricity. Though it will be more expensive,there is more than enough wind to provide the world's entire energy needs.Wind farms come in onshore and offshore forms. They can often end up at spots of natural beauty,and are often unpopular with residents. And turbines are not totally harmless-they can interfere with radar,alter climate and kill sea birds.Scotland is building Europe's largest wind farm,which will power 200 ,000 homes. The U.K. 's goal is to generate one-fifth of power from renewable sources,mainly wind,by 2020 .But this may cause problems, because wind is unreliable. One of the problems with wind farms is that______.A: there is not enough windB: wind is not reliableC: they can only be built on the seaD: they might influence the world economy
单选题It can be inferred from the passage that ______.Anew radio devices should be developed for tracking the endangered blue whalesBblue whales are no longer endangered with the use of the new listening systemCopinions differ as to whether civilian scientists should be allowed to use military technologyDmilitary technology has great potential in civilian use
单选题It can be concluded from the passage that the author ______.Adoes not reveal his personal view towards the use of renewable energyBmakes a systematic comparison between non-renewable energy and renewable energyCdisplays an objective view towards the application of renewable energyDdoes not side with the environmentalists
单选题请阅读 Passage 2，完成第 26~30小题 。Passage 2Paper money is used every day but people do not often think of money as just paper.This is because people agree that it has value，and paper money is supported by the government.People have used paper money for only a few hundred years，but what did people do before printed money was invented? In Medieval England，a stick was the official representation of money. The common system that was used involved counting debt on a piece of wood called a tally stick. The tally stick was marked with a knife.Each mark，or tally，indicated an amount of money.The tally stick acted as a contract.No one really knows who invented the tally stick，but King Henry I of England is credited as the first to use the stick in a widespread fashion.In England，the tally stick was used from 1100-1826.Marks were made on a tally stick to represent the amount of service or goods that were exchanged.The tally stick was cut in halflengthwise into two parts，and one stick was longer than the other.The person giving services or goods received the longer end of the stick，called the stock，and the person paying for the service or goods received the shorter end.Once the stick was cut，it could not be altered.When put together，the two halves fit perfectly together.Medieval England was not the only country to use the tally stick system.In 1960，Belgian scientist Jean de Heinzelin de Braucourt discovered an extremely old tally stick made of baboon bone in Africa.At first，he determined the stick to be between about 8，000 to 10，000 years old.This surprised many people because it proved that the tally stick system had been in use for much longer than everyone had previously thought.Further research has shown that this stick is actually much older: now，scientists believe it is 20，000 years old.The tally stick system may no longer be in use today，but its influence is still apparent.People still make contracts and people still borrow and lend money.People still trust that things-whether they are sticks，paper，or coins-have value.The next time paper money is used，just remember: it is only paper!Which of the following statements is true?AEnglish tally sticks have more marks than African ones.BTally sticks are a practical tool in use today.CThe current representation of money is in the form of paper.DMany models for money have been cut short.
单选题It can be concluded from the passage that ______.Ait is hopeful to bring solar energy into average householdsBit is feasible to use nuclear energy to run home appliancesCit is economical to use water to heat housesDit is possible to use wind to power machines
单选题According to the passage, solar energy has the following benefits EXCEPT that______.Ait creates no pollutionBit can save moneyCsolar panels are easy to maintainDsolar energy is renewable
单选题请阅读 Passage 2，完成第 26~30小题 。Passage 2Paper money is used every day but people do not often think of money as just paper.This is because people agree that it has value，and paper money is supported by the government.People have used paper money for only a few hundred years，but what did people do before printed money was invented? In Medieval England，a stick was the official representation of money. The common system that was used involved counting debt on a piece of wood called a "tally stick". The tally stick was marked with a knife.Each mark，or tally，indicated an amount of money.The tally stick acted as a contract.No one really knows who invented the tally stick，but King Henry I of England is credited as the first to use the stick in a widespread fashion.In England，the tally stick was used from 1100-1826.Marks were made on a tally stick to represent the amount of service or goods that were exchanged.The tally stick was cut in halflengthwise into two parts，and one stick was longer than the other.The person giving services or goods received the longer end of the stick，called the "stock"，and the person paying for the service or goods received the shorter end.Once the stick was cut，it could not be altered.When put together，the two halves fit perfectly together.Medieval England was not the only country to use the tally stick system.In 1960，Belgian scientist Jean de Heinzelin de Braucourt discovered an extremely old tally stick made of baboon bone in Africa.At first，he determined the stick to be between about 8，000 to 10，000 years old.This surprised many people because it proved that the tally stick system had been in use for much longer than everyone had previously thought.Further research has shown that this stick is actually much older: now，scientists believe it is 20，000 years old.The tally stick system may no longer be in use today，but its influence is still apparent.People still make contracts and people still borrow and lend money.People still trust that "things"-whether they are sticks，paper，or coins-have value.The next time paper money is used，just remember: it is only paper!According to the passage，what makes money valuable?APeople who use it.BGold that people find.CInventions.DAgreement.
问答题Practice 1 Biological diversity, or biodiversity, means the variety of life on earth and includes the entire web of living organisms ranging from soil microbes, frogs, and trees to bears and blue whales. From the perspective of sustainable use, wildlife is a renewable resource that provides many benefits and socioeconomic advantages. Sustainable use is defined as “the use of components of biodiversity in a way and at a rate that does not lead to long term decline” but maintains the “potential to meet the needs and aspirations of present and future generations.”