Back when the Mississippi River flowed wild, its ever-changing waters moved soil across the North American continent. It picked up sand and dirt in the north and brought it to the southern areas of what we now call the state of Louisiana. Thousands of years later, man-made barriers called levees (防洪堤) and flood-control systems control the powerful river. But Louisiana officials are making plans to use the Mississippi River’s ancient power to build new land as a way to ease the threat of rising seas.
Engineers hope to remake the destroyed low-lying lands by copying nature—digging into the levees and redirecting the water. The water holds a lot of small dirt sediments (沉淀物). The sediments can flow into coastal basins.
Some critics question whether the idea presents its own environmental risks. But if it does work, the project would rebuild an important protection against storm waves. It would also help the land provide new living areas for birds and fish that depend on wetlands.
Saltwater is destroying the coast. Pathways cut for oil and gas development, boat travel and logging have worsened the problem. The state estimates that it has lost about 518,000 hectares of land since 1932. If nothing is done, more than twice that much land could disappear over the next 50 years.
Experts and officials have discussed the idea of using the river to rebuild the coast for many years. But it was not until money became available from the 2010 BP oil spill that the plan began to really take shape. In 2010, an explosion killed 11 people on an oil rig (石油钻塔) off the Gulf Coast that energy company BP operated. Millions of gallons of oil then flowed into the water over the next three months.
One year later, the United States government ruled that BP was responsible for the accident,
The company was ordered to pay billions of dollars for the damage. Louisiana is putting much of its share of the money toward coastal restoration.
1.What advantage will the new land bring?
A.Preventing severe drought.
B.Creating habitats for animals.
C.Controlling the powerful river.
D.Increasing the northern farm land.
2.What can cause the coast to disappear faster?
A.Energy changes.
B.Destroyed levees.
C.Man-made disasters.
D.Man-made water protection systems.
3.What made the plan of rebuilding the coast land come into effect?
A.The restoration of an oil rig.
B.The payment of compensation by BP.
C.The strong demand from oil companies.
D.The special support from some local critics.
4.What can be a suitable title for the text?
A.Use Nature Power to Stop Soil Losing
B.Let the River Go Back to Its Original State
C.Fight Coastal Destruction by Copying Nature
D.Remove the Man-Made Barriers from the River
高三英语阅读理解中等难度题
Back when the Mississippi River flowed wild, its ever-changing waters moved soil across the North American continent. It picked up sand and dirt in the north and brought it to the southern areas of what we now call the state of Louisiana. Thousands of years later, man-made barriers called levees (防洪堤) and flood-control systems control the powerful river. But Louisiana officials are making plans to use the Mississippi River’s ancient power to build new land as a way to ease the threat of rising seas.
Engineers hope to remake the destroyed low-lying lands by copying nature—digging into the levees and redirecting the water. The water holds a lot of small dirt sediments (沉淀物). The sediments can flow into coastal basins.
Some critics question whether the idea presents its own environmental risks. But if it does work, the project would rebuild an important protection against storm waves. It would also help the land provide new living areas for birds and fish that depend on wetlands.
Saltwater is destroying the coast. Pathways cut for oil and gas development, boat travel and logging have worsened the problem. The state estimates that it has lost about 518,000 hectares of land since 1932. If nothing is done, more than twice that much land could disappear over the next 50 years.
Experts and officials have discussed the idea of using the river to rebuild the coast for many years. But it was not until money became available from the 2010 BP oil spill that the plan began to really take shape. In 2010, an explosion killed 11 people on an oil rig (石油钻塔) off the Gulf Coast that energy company BP operated. Millions of gallons of oil then flowed into the water over the next three months.
One year later, the United States government ruled that BP was responsible for the accident,
The company was ordered to pay billions of dollars for the damage. Louisiana is putting much of its share of the money toward coastal restoration.
1.What advantage will the new land bring?
A.Preventing severe drought.
B.Creating habitats for animals.
C.Controlling the powerful river.
D.Increasing the northern farm land.
2.What can cause the coast to disappear faster?
A.Energy changes.
B.Destroyed levees.
C.Man-made disasters.
D.Man-made water protection systems.
3.What made the plan of rebuilding the coast land come into effect?
A.The restoration of an oil rig.
B.The payment of compensation by BP.
C.The strong demand from oil companies.
D.The special support from some local critics.
4.What can be a suitable title for the text?
A.Use Nature Power to Stop Soil Losing
B.Let the River Go Back to Its Original State
C.Fight Coastal Destruction by Copying Nature
D.Remove the Man-Made Barriers from the River
高三英语阅读理解中等难度题查看答案及解析
Why Radio Stations Always Start With a "K" or "W"
It seems that whenever you switch on the radio in the morning all you hear is "Time to wake up with K98.3," or "WBLS will be right back after this commercial break".1.The majority of radio stations start with the letter "K" or "W".
All radio stations have a four-letter identification code(代码). The hosts of the show typically come up with a more catchy(易记的)station name than just the four letters, but you still hear it sprinkled in with their morning announcements and other advertisements.2.In 1912, several countries attended a conference to discuss international radiotelegraphs. One of the things that came out of that meeting was the assignment(分配)or specific letters to identify each country's radio and television signals.3.
The letters "N" and "A" were given to military stations, but "K" and "W" were assigned out for commercial use.4.And stations west of the Mississippi started with "K".
5.Sometimes they represent the networks that own the radio station for example, WABC, KCBS, and WTBS. Sometimes it's the actual station number, like in KTWO or KFOR. And other times it's an acronym(缩写)such as WTTW for "Windows to the World." But the station that takes home the prize for the best four-letter combination is a sports radio station out of St. Louis that chose the name KRAP.
A. The United States was given the letters W, K, N, and A.
B. The three letters after the "K" Or "W" can mean a few different things.
C. If you listen closely you'll notice that they all have something in common.
D. Radio stations east of the Mississippi River had to start their stations with "W".
E. The two letters you consistently hear date back to when people used to send telegrams.
F. There is some inconsistency since radio stations weren't required to change their name.
G. Try decoding these common acronyms that you probably never knew and figure out what they stand for.
高三英语七选五中等难度题查看答案及解析
Day 1 Arrival/Harbin
Places to visit: Central Street, Zhaolin Park Ice Lantern Art Fair
Upon arriving in the ice city Harbin in the early afternoon, you will be met by local English-speaking guide at Harbin airport or railway station and then start your trip from the Central Street.
The Central Street was originally built in 1898 when there were abundant of Russian businessmen in Harbin. It's a good place to see architectural styles and taste different cuisine.
In the evening, you will visit the Ice Lantern Fair in Zhaolin Park. You can see pretty ice sculptures when the ice sculptures are lit, which looks like a magical world.
Day 2 Harbin
Places to visit: Siberian Tiger Park, Ice and Snow World
In the daytime you will make an adventure in the Siberian Tiger Park, the largest natural park for wild Siberian tigers of China, even in the world. There are over 500 Siberian tigers in this park. Here you can see wild tigers closely and take some fantastic photos.
In the evening you will go to visit the Ice and Snow World. It is full of awesome ice and snow sculptures created by artists from all around the world.
Day 3 Harbin/Departure
Places to visit: Winter Swimming Performance, Ice Activities
As the Ice City, Harbin is an ideal place to have winter swimming activities. The average temperature here is - 18 °C in winter and many local people had got used to taking winter swimming. You can see all kinds of people males, females, from youth to 70 years old men swim through the frozen surface of the Songhua River. Also there is Winter Swimming Competition held in Harbin every year.
In the afternoon you will take your own arranged train or flight back home.
1.Who is the passage intended for?
A.People in the local areas.
B.Visitors from abroad.
C.Artists interested in ice.
D.Children fond of magic.
2.What can you see on the second day in Harbin?
A.Wild Siberian tigers of China.
B.Special architectural styles.
C.The swimming competition.
D.Different delicious dishes.
3.What can we know about Harbin in winter according to the text?
A.The temperature there is about -18 °C on average in winter.
B.People living there get accustomed to swimming.
C.The Songhua River is the only frozen river there.
D.Winter Swimming Competition is held every month.
高三英语阅读理解中等难度题查看答案及解析
It was along the Mississippi River _______ Mark Twain spent much of his childhood.
A. how B. which C. that D. where
高三英语单项填空中等难度题查看答案及解析
It was along the Mississippi River ________ Mark Twain spent much of his
childhood.
A．how B．which C．that D．where
高三英语单项填空中等难度题查看答案及解析
请认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入一个最恰当的单词。注意：每个空格只填1个单词。请将答案写在答题卡上相应题号的横线上。
Potential energy is the energy, chemical or physical, stored within an object, atom or molecule（分子）. Think about a car at the top of a roller-coaster （过山车）, pausing just before it slopes into the next turn. A log resting in a fireplace just before it is about to be lit is a treasure house of potential energy. As the log burns, the connections between carbon atoms that make up the wood are being broken down, and the potential energy stored within those connections is being released as heat and light. As a comet approaches a planet or star, it slows, momentarily affected by the larger body’s gravity. The potential energy builds up and then reaches a breaking point as the comet accelerates around the larger body, and is shot out to the other side.
Sports show countless examples every day of potential energy being transformed into kinetic energy. Kinetic energy is the energy of movement. When an archer（弓箭手）draws and holds her arrow, her bow is filled with stored potential energy. When she releases the bowstring, all the potential energy is quickly transformed into kinetic energy, which is transferred to the arrow that takes flight.
The transformation of stored potential energy into kinetic energy can also be made use of to power homes, factories and entire cities. The most notable example is the Hoover Dam. The Hoover Dam is an arch-gravity dam by design. This design name is the first clue as to how exactly the dam makes use of energy. Located in the Black Canyon of the Colorado River, the Hoover Dam formed, and now holds back Lake Mead — the largest reservoir in the United States.
Gravity acts as a force upon Lake Mead. Held at bay by the Hoover Dam, the waters of Lake Mead and the Colorado River gain greater potential energy with each passing moment. The Arizona and Nevada spillways（溢洪道）are two means by which the waters of Lake Mead can escape the dam. As the lake water falls over the walls into a spillway, potential energy is instantly transformed into kinetic energy. The channels through which the water normally escapes every day are the four intake towers. These towers allow the water flow through passageways to the powerhouse and hydroelectric generators. When the water reaches the intake towers and is allowed to flow down through the passageways, all the stored potential energy created by the force of gravity acting upon the water is transformed into kinetic energy, just as when water flows over the wall into a spillway. By taking advantage of the transformed potential energy of Lake Mead, the Hoover Dam provides power to California, Nevada and Arizona.
Moments like these happen all across the physical world, whether on the molecular or universe level.
| Main points | Supporting details |
| What is potential energy? | Potential energy is the energy existing either in the chemical or physical 1., which is stored in an object. When a car is sloping into the next turn from the top of a roller-coaster, it is building up potential energy. When a log is burning, the connections between carbon atoms are being broken down, 2. potential energy as light and heat. When a comet approaches a planet or star, the potential energy 3. to a breaking point and then the comet is shot out to the other side. |
| How is potential energy transformed into kinetic energy? | Potential energy can be transformed into kinetic energy, which is the energy4. by movement. When the bowstring is released by an archer, the potential energy stored in the full bow is quickly transferred to the arrow, thus transformed into kinetic energy which sets the arrow 5. far away. Hoover Dam is the most notable example of energy transformation. Hoover Dam is 6. in the Black Canyon of the Colorado River, holding back Lake Mead. The waters of Lake Mead escape the Dam, falling over the walls into Arizona and Nevada spillways, leading to the 7. transformation from potential energy into kinetic energy. The 8. of potential energy is from the force of gravity acting upon the water |
| What 9. is the energy transformation made of? | Homes, factories and cities are efficiently 10. thanks to the powerhouses and hydroelectric generators taking advantage of the transformed potential energy. |
高三英语阅读表达中等难度题查看答案及解析
When Lina was awoken by the sound of thunder, she was alone on the island. The air was cool and bullfrogs croaked. It was that brief moment when the summer sun had set but the stars hadn't yet appeared. Lina rubbed her eyes and looked around. "Hello?" she called. "Celia? Marie?" There was no response.
The moon was rising now, shedding light on the island. They had always called it "Forgotten Island" because no one but they seemed to remember its existence. It wasn't on any of the maps they could find, and even the forest rangers didn't know about it. Lina loved that the island, hidden in a heavily-wooded side stream of the l river, was a secret between the three friends—her, Celia, and Marie. But now Lina was here alone, and it was night. Worse still, it was her own fault.
"Come on, Lina, let Marie row the born." Celia had said. Marie was two years older than Lina, but she was a hopeless rower. That's why Linn refused and rowed the boat to the island.
The argument that followed the refusal took the usual form. Celia took Marie's side, as she always did. Lina exploded and yelled at them to just leave. So they got back in the boat and left.
A bolt of lightning crossed the darkened sky, accompanied by a deafening thunder clap. The storm was here. As the first cold raindrop slid down her neck, Lina's mind returned to her current problem. She was stuck here by herself. She just hoped she didn't become as forgotten as the island. The thought of it sent a chill down her back.
Suddenly, Lina spotted something in the water. It was a boat, and inside it were Marie, Celia, and Marie's dad, who was steering through the fast flowing waters. As the boat approached, they saw Lina waving and the worried expressions on their faces turned to relief
In her excitement Lina jumped into the river. Only once she was in the icy water did she remember how fast the water was moving. Luckily a strong arm reached into the water and pulled her out. She smiled weakly at Marie's dad and, without a word, hugged Celia and Marie. They didn't seem to mind becoming wet.
1.What do we know about the island?
A.It is very near the ocean.
B.It is a popular place for boating.
C.It is surrounded by thick forest.
D.It has never been reached by others.
2.Why did Lina get angry?
A.Lina was left alone on the island.
B.Marie would not help row the boat.
C.Marie didn't know how to row the boat.
D.Celia supported Marie in the disagreement.
3.What caused Lina to feel scared?
A.Her shame about the unnecessary argument,
B.The first raindrop of the approaching storm.
C.The idea that no one would come to save her.
D.The drop in temperature as the sun went down.
4.Which is true statement according to the passage?
A.Lina didn't want to forget the island.
B.When Lina saw the boat, she fell relieved.
C.Marie rescued Lina when she fell into the water.
D.Marie was poor in rowing.
5.What can we infer about the three girls?
A.All of them could swim well.
B.They had an adventurous spirit.
C.They lived far away from the island.
D.They quarreled with one another badly.
高三英语阅读理解中等难度题查看答案及解析
When Lina was awoken by the sound of thunder, she was alone on the island. The air was cool and bullfrogs croaked. It was that brief moment when the summer sun had set but the stars hadn't yet appeared. Lina rubbed her eyes and looked around.
“Hello?” she called. “Celia? Marie”
There was no response.
The moon was rising now, shedding light on the island. They had always called it “Forgotten Island” because no one but they seemed to remember its existence. It wasn’t on any of the maps they could find, and even the forest rangers didn’t know about it. Lina loved that the island, hidden in a heavily-wooded side stream of the river, was a secret between the three friends — her, Celia, and Marie.
But now Lina was here alone, and it was night. Worse still, it was her own fault.
“Come on, Lina, let Marie row the boat.” Celia had said. Marie was two years older than Lina, but she was a hopeless rower. That’s why Lina refused and rowed the boat to the island. The argument that followed the refusal took the usual form. Celia took Marie’s side, as she always did. Lina had exploded and yelled at them to just leave. So they got back in the boat and left.
A bolt of lightning crossed the darkened sky, accompanied by a deafening thunder clap. The storm was here. As the first cold raindrop slid down her neck, Lina’s mind returned to her current problem. She was stuck here by herself. She just hoped she didn’t become as forgotten as the island. The thought of it sent a chill (寒意) down her back.
Suddenly, Lina spotted something in the water. It was a boat, and inside it were Marie, Celia, and Marie's dad, who was steering through the fast flowing waters. As the boat approached, they saw Lina waving and the worried expressions on their faces turned to relief.
In her excitement Lina jumped into the river. Only once she was in the icy water did she remember how fast the water was moving. Luckily a strong arm reached into the water and pulled her out. She smiled weakly at Marie’s dad and, without a word, hugged Celia and Marie. They didn’t seem to mind becoming wet.
1.What can be inferred about the island?
A.It is very near the ocean.
B.It is a popular place for boating.
C.It is surrounded by thick forest.
D.It has never been reached by others.
2.Why did Lina get angry?
A.Marie would not help row the boat.
B.Lina was left alone on the island.
C.Marie didn't know how to row the boat.
D.Celia supported Marie in the disagreement.
3.What caused Lina to feel a chill?
A.Her shame about the unnecessary argument.
B.The first raindrops of the approaching storm.
C.The idea that no one would come to save her.
D.The drop in temperature as the sun went down.
4.Who pulled Lina out of the water?
A.Marie’s father.
B.Lina herself.
C.Marie.
D.CeliA.
高三英语阅读理解中等难度题查看答案及解析
When Lina was awoken by the sound of thunder, she was alone on the island. The air was cool and bullfrogs croaked. It was that brief moment when the summer sun had set but the stars hadn’t yet appeared. Lina rubbed her eyes and looked around. “Hello?” she called. “Celia? Marie?” There was no response.
The moon was rising now, shedding light on the island. They had always called it “Forgotten Island” because no one but they seemed to remember its existence. It wasn’t on any of the maps they could find, and even the forest rangers didn’t know about it. Lina loved that the island, hidden in a heavily-wooded side stream of the river, was a secret between the three friends---her, Celia, and Marie. But now Lina was here alone, and it was night. Worse still, it was her own fault.
“Come on, Lina, let Marie row the boat.” Celia had said. Marie was two years older than Lina, but she was a hopeless rower. That’s why Lina refused and rowed the boat to the island. The argument that followed the refusal took the usual form. Celia took Marie’s side, as she always did. Lina exploded and yelled at them to just leave. So they got back in the boat and left.
A bolt of lightning crossed the darkened sky, accompanied by a deafening thunder clap. The storm was here. As the first cold raindrop slid down her neck, Lina’s mind returned to her current problem. She was stuck here by herself. She just hoped she didn’t become as forgotten as the island. The thought of it sent a chill down her back.
Suddenly, Lina spotted something in the water. It was a boat, and inside it were Marie, Celia, and Marie’s dad, who was steering through the fast flowing waters. As the boat approached, they saw Lina waving and the worried expressions on their faces turned to relief.
In her excitement Lina jumped into the river. Only once she was in the icy water did she remember how fast the water was moving. Luckily a strong arm reached into the water and pulled her out. She smiled weakly at Marie’s dad and, without a word, hugged Celia and Marie. They didn’t seem to mind becoming wet.
1.What is special about the island?
A.It is very near the ocean. B.It is a popular place for boating.
C.It is surrounded by thick forest. D.It has never been reached by others.
2.Why did Lina get angry?
A.Lina was left alone on the island. B.Marie would not help row the boat.
C.Marie didn’t know how to row the boat. D.Celia supported Marie in the disagreement.
3.What caused Lina to feel scared?
A.Her shame about the unnecessary argument.
B.The first raindrop of the approaching storm.
C.The idea that no one would come to save her.
D.The drop in temperature as the sun went down.
4.What can we infer about the three girls?
A.All of them could swim well. B.They had an adventurous spirit.
C.They lived far away from the island. D.They didn’t make up in the end.
高三英语阅读理解中等难度题查看答案及解析
When Lina was awoken by the sound of thunder, she was alone on the island. The air was cool and bullfrogs croaked. It was that brief moment when the summer sun had set but the stars hadn’t yet appeared. Lina rubbed her eyes and looked around. “Hello?” she called. “Celia? Marie?” There was no response.
The moon was rising now, shedding light on the island. They had always called it “Forgotten Island “because no one but they seemed to remember its existence. It wasn't on any of the maps they could find, and even the forest rangers didn’t know about it. Lina loved that the island, hidden in a heavily-wooded side stream of the river, was a secret between the three friends-her, Celia, and Marie. But now Lina was here alone, and it was night. Worse still, it was her own fault.
“Come on, Lina,let Marie row the boat.” Celia had said. Marie was two years older than Lina, but she was a hopeless rower. That’s why Lina refused and rowed the boat to the island. The argument that followed the refusal took the usual form. Celia took Marie’s side, as she always did. Lina exploded and yelled at them to just leave. So they got back in the boat and left.
A bolt of lightning crossed the darkened sky, accompanied by a deafening thunder clap. The storm was here. As the first cold raindrop slid down her neck, Lina’s mind returned to her current problem. She was stuck here by herself. She just hoped she didn’t become as forgotten as the island. The thought of it sent a chill down her back.
Suddenly, Lina spotted something in the water. It was a boat, and inside it were Marie, Celia, and Marie’s dad, who was steering through the fast flowing waters. As the boat approached, they saw Lina waving and the worried expressions on their faces turned to relief.
In her excitement Lina jumped into the river. Only once she was in the icy water did she remember how fast the water was moving. Luckily a strong arm reached into the water and pulled her out. She smiled weakly at Marie’s dad and, without a word, hugged Celia and Marie. They didn’t seem to mind becoming wet.
1.What is special about the island?
A.It is very near the ocean.
B.It is a popular place for boating.
C.It is surrounded by thick forest.
D.It has never been reached by others.
2.Why did Lina get angry？
A.Lina was left alone on the island.
B.Marie would not help row the boat.
C.Marie didn't know how to row the boat.
D.Celia supported Marie in the disagreement.
3.What caused Lina to feel scared?
A.Her shame about the unnecessary argument.
B.The first raindrop of the approaching storm.
C.The idea that no one would come to save her.
D.The drop in temperature as the sun went down.
4.What can we infer about the three girls?
A.All of them could swim well.
B.They had an adventurous spirit.
C.They lived far away from the island.
D.They quarreled with one another badly.
高三英语阅读理解中等难度题查看答案及解析