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题型:阅读理解-阅读单选 难度:0.65 引用次数:90 题号:10400564

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

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【推荐1】Since I was born and brought up in a rural town, I have a great interest in nature. Using the chance of studying abroad in my second year at college, I decided to go to Canada just because I wanted to see the beautiful phenomena there So after I finished the study program, I went to Yellowknife in the Northwest Territories.

I clearly remember the sixth night in Yellowknife. Suddenly my host mother came to my room around 8 p.m. and told me to change clothes and go outside quickly carrying her camera.

The northern lights were flickering (闪烁) in the sky! I was shocked and just stood there with my mouth open. I forgot to take pictures of the mysterious lights.

Since that night, whenever it was sunny, I went outside at night and looked at the sky. It was so cold that I lost all feeling in my hands and feet.

As I took pictures of the northern lights, I came to find a characteristic movement of the lights. They first appear in the north part of the sky and then they gradually come down to the south part of the sky. After that, suddenly, they come in the middle of the north and south only for a while, which is the time when the best northern lights can be seen. Since it is only a few seconds for the northern lights to come down to the middle of the sky, it is very hard to get good pictures.

The stronger the sun acts, the better and stronger the northern lights flicker in the sky. That’s because they come about from the collisions (碰撞) between atmospheric gases and the solar wind. Much more solar wind comes to the earth when the sun is active, which leads to the best northern lights. And the colors of the northern lights depend on the height of the collisions and the kinds of gases.

1. Why did the host mother ask the author to go out?
A.She wanted to take a picture of him.
B.She wanted to take a walk with him.
C.She wanted to tell him something important.
D.She wanted him to see the northern lights.
2. The author forgot to take pictures after going out because ______.
A.the host mother didn’t remind him to take the camera
B.he was shocked by the wonderful sight
C.the lights flickering in the sky disappeared too soon
D.he lost all feeling in his hands and feet
3. When is the best time to see the northern lights?
A.When they appear in the north part of the sky.
B.When they come down to the south part of the sky.
C.When they are between the north and south.
D.When they rise in the east part of the sky.
4. What does the last paragraph mainly tell us?
A.Ways to take good pictures.
B.The relationship between the sun and the northern lights.
C.The colors of the northern lights.
D.The time of the best northern lights.
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【推荐2】I'd shared my home with scorpions(非洲蝎子)in Africa before. But when we moved to Costa Rica which was an insect center, there were scorpions under the fridge, a stick insect and a tarantula(狼蛛), the size of a dinner plate, wandering around the courtyard.

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1. What do we know about the author when she arrived in Costa Rica?
A.She missed TV and radio very much.B.She quickly got used to the life there.
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3. What can we infer from the last paragraph?
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【推荐3】On a Saturday morning in New York, Nina Roedeler walked to Astoria Park. It was a rainy day, and not many people were out. She enjoyed the quiet. But she didn’t stay for a long time. A little before 10 am, she walked over to a van (有篷货车), pulling the doors open and looking at those black boxes, which were the reason why she was there: the dogs.

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