The big lake was contaminated with waste waters from nearby factories.A:widened B:blackenedC:polluted D:mixed
The big lake was contaminated with waste waters from nearby factories.
A:widened
B:blackened
C:polluted
D:mixed
B:blackened
C:polluted
D:mixed
参考解析
解析：本句话的意思是：那个大湖泊被附近工厂的废水污染了。pollute：污染、弄脏，例如：The violent films pollute the minds of the young men.暴力电影毒害年轻人的思想。 widen：加宽、变宽，例如：The gap between income and expenditure has widened to 11 %．收入和支出之间的差额已扩大到11%。 blacken：使变黑，例如：The soldier blackened his face with charcoal．那名士兵用木炭把他的脸涂黑。mix:混合、使混合，例如：The painter was busy mixing his colours．画家在忙着调颜色。
相关考题：
It is not clear yet when the workers( )strike will return to their factories. A. inB. atC. onD. from
Passage FiveThe Northern Pike is a very bad fish. It is a big, hungry fish, and swallows little fish such as trout and perch. Many Northern Pikes live in Lake Davis. They are killing all the smaller fish in the lake. The Northern Pike are a serious threat to the lake because they eat all the smaller fish. Soon, all other species of fish in the lake will be killed off. This is not healthy for the environment.Experts are afraid that the Northern Pike will swim out of Lake Davis through many smaller rivers that feed into the lake. They could spread all over the country and damage many other water environments. If that happens, it would be too late to stop the Northern Pike.For ten years, officials have been trying to remove the Northern Pike from Lake Davis. They haw. tried using nets, explosives and poisons. However, the Northern Pike population is still doing well in Lake Davis. Many people do not like the idea of using poison to kill the fish. They worry that the poi- sons are bad for humans who use the water. No trace of the poisons has ever been found in local wells, however.Scientists are going to try the poison again. This time, they will drain the lake before they add the poison to the water. A public hearing will be held to talk about the problem.52. Why are some people against the use of poisons to kill Northern Pike?A. Fishermen will be poisoned too.B. The poisons are expensive.C. They think that wells will be polluted.D. The lake will become unsafe.
Below 600 feet ocean waters range from faintly lit to completely dark.A:inadequately B:hardlyC:dimly D:sufficiently
共用题干WaterEarth is like a big blue marble.From high above the Earth and from the moon,the planet gleams and shines.The blue water in the oceans and seas of the Earth makes a dramatic image.The white clouds above the Earth add beauty to the picture.Water is the source of this beauty and the source of life on Earth.It is the reason people can live on this planet. Water is everywhere.(46)_______.It is in the soil,the ground that grows the food.Water is in rock deep under the ground, in natural holding areas一in storage.In a real sense,water keeps Earth alive.Nature has an unchanging amount of water. Nature has a perfect system for recycling water. (47)_____.It falls as rain.Then it goes to one of three places.It might sink slowly through the soil into the natural holding areas in the rock.(48)_______一by becoming vapor,or gas.It might run off into streams,rivers and oceans.By itself,nature can keep the balance and provide plenty of clean water for us.Nature recycles water.However,people cause problems for this natural recycling system.Nature's recycling system can work well(49)________.Some ways that people upset nature are easy to understand.For example, dirty sewage（污水沟系统）water from homes and factories must not mix with drinking water. People get sick from drinking contaminated water. Sometimes water from factories goes into streams and rivers.It enters into the groundwater. It can flow into lakes too.This kind of contamination from industry(waste water from factories) can be dangerous for people.If water contains poisons and chemicals,it is poison.(50)________;some poisons kill people as well as birds and animals.Without knowing,people can upset nature's recycling system.Lakes and rivers add beauty to the world. People enjoy water for entertainment purposes,too. People enjoy swimming and playing in the cool water of a lake in the summer. They like to ride on boats on rivers.Many people enjoy catching fish in the rivers.They fish for food and for sport.However,in some places,the water of the lakes and rivers is no longer safe.These rivers and lakes are contaminated.The fish are dying because of the chemicals from farms and factories.People cannot swim in the polluted water._________（49）A:Poison makes people sickB:It is in the air that people breatheC:We can not live without waterD:Water is used again and againE:only if people work with the system and not against it F: It might disappear into the air quickly
共用题干The Exploding Lakes of CameroonWhat comes to mind when you think of a lake?You probably imagine a pretty scene with blue water, birds,and fish.For the people in the northwestern Cameroon,however,the image is very different.For them, lakes may mean terrible disasters.In 1984,poisonous gases exploded out of Lake Monoun and came down into the nearby villages,killing thirty-seven people.Two years later,Lake Nyos erupted.A cloud of gases rolled down the hills and into the valleys and killed 1,700 people.Lake Nyos and Lake Monoun are crater（火山口）lakes.They were formed when water collected in the craters of old volcanoes.The volcanoes under Lake Nyos and Lake Monoun are not active anymore.However, poisonous gases from the center of the earth continue to flow up through cracks in the bottom of the lake.This is normal in a crater lake.In most crater lakes,these gases are released often because the water"turns over" regularly.That is,the water from the bottom of the lake rises and mixes with the water at the top,allowing the gases to escape slowly.However,in Lakes Nyos and Monoun,there is no regular turning over.No one knows the reason for this fact,but as a result,these lakes have more gases trapped at the bottom than other crater lakes.In fact, scientists who have studied Lakes Nyos and Monoun have found 16,000 times more gases.When a strong wind,cool weather,a storm,or a landslide（滑坡）causes the water to turn over suddenly,the gases escape in a violent explosion.In the past,no one knew when the gases might explode,so there was no way for the villagers to escape disaster.Now scientists from the United States,France,and Cameroon have found a way to reduce the gas pressure at the bottom of Lake Nyos.They stood a 672-foot plastic pipe in the middle of the lake,with one end of the pipe near the bottom and the other end in the air.Near the top of the pipe,the team put several holes that could be opened or closed by a computer.Now,when the gas pressure gets too high,the holes are opened and some of the gas-filled water shoots up through the pipe into the air like a fountain.With less pressure,a disastrous explosion is much less likely.However,the scientists are not sure that one pipe will be enough to prevent explosions.They hope to put in others soon and they plan to install a similar pipe and a computer system at Lake Monoun as well.To protect people nearby until all of the pipes are in place,the scientists have installed early warning systems at both lakes.If the gas pressure rises to a dangerous level,computers will set off loud sirens（警 报）and bright lights to warn the people in the villages.In that way,they will have time to escape from the dangerous gases.Which of the following statements about Lake Nyos and Lake Monoun is true?A:They were formed in 1984.B:They are at the top of two active volcanoes.C:They are not like most other crater lakes.D:Water in them turns over regularly.
共用题干第三篇The Exploding Lakes of CameroonWhat comes to mind when you think of a lake?You probably imagine a pretty scene with blue water,birds,and fish.For the people in the northwestern Cameroon,however,the image is very different.For them,lakes may mean terrible disasters.In 1984, poisonous gases exploded out of Lake Monoun and came down into the nearby villages, killing thirty-seven people.Two years later,Lake Nyos erupted.A cloud of gases rolled down the hills and into the valleys and killed 1,700 people.Lake Nyos and Lake Monoun are crater（火山口）lakes. They were formed when water collected in the craters of old volcanoes.The volcanoes under Lake Nyos and Lake Monoun are not active anymore.However,poisonous gases from the center of the earth continue to flow up through cracks in the bottom of the lake.This is normal in a crater lake. In most crater lakes,these gases are released often because the water"turns over" regularly.That is,the water from the bottom of the lake rises and mixes with the water at the top,allowing the gases to escape slowly.However,in Lakes Nyos and Monoun,there is no regular turning over.No one knows the reason for this fact,but as a result,these lakes have more gases trapped at the bottomthan other crater lakes.In fact,scientists who have studied Lakes Nyos and Monoun have found 16,000 times more gases.When a strong wind,cool weather,a storm,or a landslide（滑坡）causes the water to turn over suddenly,the gases escape in a violent explosion.In the past,no one knew when the gases might explode,so there was no way for the villagers to escape disaster. Now scientists from the United States,France,andCameroon have found a way to reduce the gas pressure at the bottom of Lake Nyos.Theystood a 672-foot plastic pipe in the middle of the lake,with one end of the pipe near the bottom and the other end in the air. Near the top of the pipe,the team put several holesthat could be opened or closed by a computer.Now,when the gas pressure gets too high,the holes are opened and some of the gas-filled water shoots up through the pipe into the air like a fountain.With less pressure,a disastrous explosion is much less likely.However,the scientists are not sure that one pipe will be enough to prevent explosions.They hope to put in others soon and they plan to install a similar pipe and a computer system at Lake Monoun as well.To protect people nearby until all of the pipes are in place,the scientists have installed early warning systems at both lakes.If the gas pressure rises to a dangerous level, computers will set off loud sirens（警报）and bright lights to warn the people in the villages. That way,they will have time to escape from the dangerous gases.A team of scientists hasA:erected a pressure-releasing pipe in the lake.B:identified the gases at the bottom of the lake.C:built a beautiful fountain near the lakes.D:removed all dangerous gases from the lakes.
共用题干The Exploding Lakes of CameroonWhat comes to mind when you think of a lake?You probably imagine a pretty scene with blue water, birds,and fish.For the people in the northwestern Cameroon,however,the image is very different.For them, lakes may mean terrible disasters.In 1984,poisonous gases exploded out of Lake Monoun and came down into the nearby villages,killing thirty-seven people.Two years later,Lake Nyos erupted.A cloud of gases rolled down the hills and into the valleys and killed 1,700 people.Lake Nyos and Lake Monoun are crater（火山口）lakes.They were formed when water collected in the craters of old volcanoes.The volcanoes under Lake Nyos and Lake Monoun are not active anymore.However, poisonous gases from the center of the earth continue to flow up through cracks in the bottom of the lake.This is normal in a crater lake.In most crater lakes,these gases are released often because the water"turns over" regularly.That is,the water from the bottom of the lake rises and mixes with the water at the top,allowing the gases to escape slowly.However,in Lakes Nyos and Monoun,there is no regular turning over.No one knows the reason for this fact,but as a result,these lakes have more gases trapped at the bottom than other crater lakes.In fact, scientists who have studied Lakes Nyos and Monoun have found 16,000 times more gases.When a strong wind,cool weather,a storm,or a landslide（滑坡）causes the water to turn over suddenly,the gases escape in a violent explosion.In the past,no one knew when the gases might explode,so there was no way for the villagers to escape disaster.Now scientists from the United States,France,and Cameroon have found a way to reduce the gas pressure at the bottom of Lake Nyos.They stood a 672-foot plastic pipe in the middle of the lake,with one end of the pipe near the bottom and the other end in the air.Near the top of the pipe,the team put several holes that could be opened or closed by a computer.Now,when the gas pressure gets too high,the holes are opened and some of the gas-filled water shoots up through the pipe into the air like a fountain.With less pressure,a disastrous explosion is much less likely.However,the scientists are not sure that one pipe will be enough to prevent explosions.They hope to put in others soon and they plan to install a similar pipe and a computer system at Lake Monoun as well.To protect people nearby until all of the pipes are in place,the scientists have installed early warning systems at both lakes.If the gas pressure rises to a dangerous level,computers will set off loud sirens（警 报）and bright lights to warn the people in the villages.In that way,they will have time to escape from the dangerous gases.What do we learn from the last paragraph?A:Scientists are planning to install pipes in all crater lakes.B:Scientists still do not know how to prevent gas explosions.C:Explosion disasters could be avoided in the future.D:Warning systems have been set up in the villages nearby.
共用题干The Exploding Lakes of CameroonWhat comes to mind when you think of a lake?You probably imagine a pretty scene with blue water, birds,and fish.For the people in the northwestern Cameroon,however,the image is very different.For them, lakes may mean terrible disasters.In 1984,poisonous gases exploded out of Lake Monoun and came down into the nearby villages,killing thirty-seven people.Two years later,Lake Nyos erupted.A cloud of gases rolled down the hills and into the valleys and killed 1,700 people.Lake Nyos and Lake Monoun are crater（火山口）lakes.They were formed when water collected in the craters of old volcanoes.The volcanoes under Lake Nyos and Lake Monoun are not active anymore.However, poisonous gases from the center of the earth continue to flow up through cracks in the bottom of the lake.This is normal in a crater lake.In most crater lakes,these gases are released often because the water"turns over" regularly.That is,the water from the bottom of the lake rises and mixes with the water at the top,allowing the gases to escape slowly.However,in Lakes Nyos and Monoun,there is no regular turning over.No one knows the reason for this fact,but as a result,these lakes have more gases trapped at the bottom than other crater lakes.In fact, scientists who have studied Lakes Nyos and Monoun have found 16,000 times more gases.When a strong wind,cool weather,a storm,or a landslide（滑坡）causes the water to turn over suddenly,the gases escape in a violent explosion.In the past,no one knew when the gases might explode,so there was no way for the villagers to escape disaster.Now scientists from the United States,France,and Cameroon have found a way to reduce the gas pressure at the bottom of Lake Nyos.They stood a 672-foot plastic pipe in the middle of the lake,with one end of the pipe near the bottom and the other end in the air.Near the top of the pipe,the team put several holes that could be opened or closed by a computer.Now,when the gas pressure gets too high,the holes are opened and some of the gas-filled water shoots up through the pipe into the air like a fountain.With less pressure,a disastrous explosion is much less likely.However,the scientists are not sure that one pipe will be enough to prevent explosions.They hope to put in others soon and they plan to install a similar pipe and a computer system at Lake Monoun as well.To protect people nearby until all of the pipes are in place,the scientists have installed early warning systems at both lakes.If the gas pressure rises to a dangerous level,computers will set off loud sirens（警 报）and bright lights to warn the people in the villages.In that way,they will have time to escape from the dangerous gases.A team of scientists has______.A:erected a pressure-releasing pipe in the lakeB:identified the gases at the bottom of the lakeC:built a beautiful fountain near the lakesD:removed all dangerous gases from the lakes
资料：Happy wood sprites knows the way to Fenghuang city.Happy wood sprites will hold a big party along the Spirit Lake tonightThe Spirit Lake is located in North-east of hereThe density of tree branches and leaves could tell direction. Generally ,the direction that has More branches and leaves is the south.According to astrology,you could determine direction. Firstly, you should find the adle Big Dipper. In the direction of the handle you can find Poiaris and that direction is the north.打开信封，里面是一个请柬A recital of poems by Barbie Mariposa that retelllegends from the tribal culture of the Spirit Lake.Accompaniment by Happy wood sprites who will beplaying harp native spirit Lake instruments fromhis private collectionGreen spinach salad with vinaigrette dressingCream of mushroom soupGrilled salmon with choice of either roasted squashor steamed broccoliLemon meringue tartDinner will start promptly at midnight and endbefore sunrise is Tree House of Spirit Lake .Formal Dressing requires. How is the fish prepared?A.It is creamedB.It is steamedC.It is grilledD.It is roasted
Could you tell me where Mr. Lake is? （）A、From EnglandB、At the officeC、He‘s workingD、He‘s very busy
单选题The author says that in some hot and dry areas it is advisable to _____.Abuild big lakes to store waterBconstruct big pumping stationsCchannel water from nearby rivers to croplandDbuild small and cheap irrigation systems
单选题No oil or mixture containing oil（）into Singapore waters from any vessel.Ashall not be dischargedBshall be dischargedCshall be filledDshall not be filled
单选题Which of the following is NOT among the solutions to the lack of sewage water treatment plants?ACooperation with other organizations.BCooperation with the World Bank.CTwo projects about treatment plants for sewage waters in Vlore and Pogradec.DTo control the waste water discharged.
问答题Practice 4 Few creations of big technology capture the imagination like giant dams. Perhaps it is humankind’s long suffering at the mercy of flood and drought that makes the ideal of forcing the waters to do our bidding so fascinating. But to be fascinated is also, sometimes, to be blind. Several giant dam projects threaten to do more harm than good. The lesson from dams is that big is not always beautiful. It doesn’t help that building a big, powerful dam has become a symbol of achievement for nations and people striving to assert themselves. Egypt’s leadership in the Arab world was cemented by the Aswan High Dam. Turkey’s bid for First World status includes the giant Ataturk Dam.
多选题“Sewage” as defined in MARPOL Annex IV means:（）ADrainage and other wastes from any form of toilet and urinalsBDrainage from medical premises (dispensary, sick bay, etc. via wash basin, wash tubsand scuppers located in such premisesCDrainage from spaces containing living animalsDOther waste waters when mixed with the drainage defined above
单选题Tina’s children, ______all live nearby, organized a big party for her eightieth birthday.Awho BthatCwhich Das
单选题Tina’s children, _____ all live nearby, organized a big party for her eightieth birthday.AwhoBthatCwhichDas
单选题（）are used to ensure that ships don’t discharge oil when pumping out oily water from any oil contaminated space.ABoilerBIncineratorCOily water separatorDSewage treatment unit
单选题It can be concluded from the passage that _____.Arubbish is a potential remedy for the shortage of raw materialsBlocal governments in the U.S. can expect big profits from recyclingCrecycling is to be recommended both economically and environmentallyDlandfills will still be widely used for waste disposal
单选题Which of the following is true according to the speaker?AThe atmosphere is marked with turbulences.BThe deep waters are full of turbulent currents.CThe atmosphere is heated from above.DThe deep waters are heated from below.
单选题Which of the following is INCORRECT according to the first two paragraphs?ASome cities in Albania have completely solved the problem of urban wastes.BThere is lack of an adequate system for the collection and transportation of solid waste.CThe country has not elaborated a strategy on urban solid waste.DThere is a continuous danger for the infection of drinking waters with sewage waters in some cities.
单选题Metal particles accumulated from the wearing of components in a diesel engine can result from lube oil that has been contaminated with（）.Aabrasive particlesBmetallic oxidesCcorrosive acidsDany or all of the above
单选题— I’m looking for a nearby place for my holiday. Any good ideas?— How about the Moon Lake? It is ______ easy reach of the city.AbyBbeyondCwithinDfrom
问答题Practice 7 As you approach Wolfeboro from any direction you will pass by lovely old homes and inns until you arrive at the picturesque center of the village with views of Wolfeboro Bay and the lake beyond. Along Main Street you will find channing boutiques and specialty shops of every description, a range of restaurants from casual family spots to historic inn dining rooms and taverns. A beautifully situated park on the lake's shore provides a perfect spot to savor an ice cream while watching the boats darting about on the bay or the exciting arrival of the famous M/S Mount Washington as she docks nearby. This park hosts many cultural and entertaining events throughout the year and is the center point for summertime entertainment. Visitors will enjoy such events as musical performances, fine art shows, craft fairs, the New England Antique Boat Museum, fireworks and many other activities. A unique way to view Lake Winnipesaukee and its natural surroundings is by Kayak. Views of this region provide a great escape into nature.