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题型:阅读理解-阅读单选 难度:0.65 引用次数:92 题号:11369566

Indonesia’s air force has seeded clouds with salt in an effort to stop rain from falling on the flooded capital, Jakarta. The seeding operation follows deadly flash floods and landslides that hit the capital after some of the heaviest rain ever recorded. Indonesian officials said that as of Friday, at least 43 people had been killed in the disaster. Tens of thousands of people have been displaced.

Cloud seeding is a process that involves shooting salt into clouds in an attempt to create artificial rain. It is often used in Indonesia to help put out forest fires. The current operation aims to get the clouds to drop water and break up before they reach Jakarta.

Indonesia’s air force teamed up with the country’s technology agency to carry out three rounds of cloud seeding on Friday. Officials said more cloud seeding would take place as needed.

The latest flooding followed heavy rainfall on December 31 and into the early hours of New Year’s Day. The water covered large areas of Jakarta and nearby towns. The start of 2020 weather was one of the most extreme rainfall events since record keeping began in 1866, Indonesia’s weather agency said on Friday. The officials said climate change had increased the risk of extreme weather. They warned that heavy rainfall could reach a high point in mid-January and should be expected to last until mid-February.

News videos showed floodwaters spreading across Jakarta. Images showed groups of people walking through water and mud-covered cars, some of them sitting on top of each other. President Joko Widodo blamed delays in flood control projects for the disaster. Among the projects is the building of a canal that has been delayed since 2017 because of property right issues.

Jakarta has been slowly sinking. A main cause is the amount of ground water being drawn out from under the city. Rising sea levels have made the threat of flooding even worse. Last year, Widodo announced he would move Indonesia’s capital to East Kalimantan province on Borneo island to reduce the burden on overpopulated Jakarta.

1. What did the extremely heavy rainfall result in?
A.The seeding operation failed.B.Forty-three people were missing.
C.An airplane carrying salt crashed.D.A great many people lost their homes.
2. Why was the cloud seeding operated on Friday?
A.To put out forest fires.B.To reduce natural rain.
C.To test the country’s technology.D.To stop rain from flooding the capital.
3. What does the underlined word “them” refer to in paragraph 5?
A.Videos.B.People.C.Cars.D.Projects.
4. What can be learned from the passage?
A.Jakarta is facing great challenges.B.The artificial rain resulted in floods.
C.The flood control projects worked well.D.The continuous rain would become weak.

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文章大意:本文是一篇说明文。文章通过对红木蚁的追踪研究发现,蚂蚁能预测地震的发生。

【推荐1】Ants know when an earthquake is about to strike, researchers have discovered. Their behavior changes greatly before the quake and they resume normal functioning only a day after it. Gabriele Berberich of the University of Duisburg-Essen in Germany presented these findings according to Live Science.

Berberich and her team discovered that red wood ants preferred to build their homes right along active faults (断层)in Germany. They counted 15,000 mounds (土堆)lining the faults. These faults are the places where the earth breaks in earthquakes.

Using a special camera that tracked changes in activity, Berberich and her team tracked the ants round the clock for three years. They found that the ants’ behavior changed only when the quake was over magnitude 2.0. There were 10 earthquakes between magnitude 2.0 and 3.2 during this period, and many smaller ones. Humans can also sense quakes over magnitude 2.0 only.

According to Berberich, normal ant activity is made up of going about collecting food during the day and resting in the night. But before an earthquake, the ants didn’t go back to their mound in the night and moved around outside it. This strange behavior continued till a day after the earthquake, Berberich told a news conference, according to Live Science.

How do ants know an earthquake is coming? Berberich suggested that they could either be picking up changing gas or noting small changes in the earth’s magnetic fields (磁场). “ Red wood ants have special cells which can sense changes in carbon dioxide levels. They also have special cells for discovering electromagnetic fields,” she said. Berberich and her team are planning to continue the research in areas where there are more and bigger earthquakes.

1. The underlined word “resume” in Paragraph 1 probably means “________”
A.presentB.recoverC.quitD.improve
2. What is the purpose of the first paragraph?
A.To bring in the main topic.
B.To make the text interesting.
C.To introduce a famous researcher.
D.To tell how to predict an earthquake.
3. What happens to the ants before an earthquake?
A.They are too excited to rest.
B.They don’t collect their food.
C.They get lost on their way home.
D.They refuse to go inside their mound.
4. What can be learned about the ants from the passage?
A.They can only sense smaller earthquakes.
B.They have two ways to predict earthquakes.
C.They can be depended on to warn people of earthquakes.
D.They like to build their homes where earthquakes happen.
2023-01-06更新 | 57次组卷
阅读理解-阅读单选(约500词) | 适中 (0.65)
名校
文章大意:本文是一篇说明文。文章介绍亚洲季风影响着世界上半数的人口,然而亚洲季风对于气象系统的影响却很难预测,目前美国学者收集了大量的记录,这给我们了解季风提供了有力的支持。

【推荐2】A monsoon(季风)refers to a seasonal shift in the atmospheric circulation because of irregular heating of the sea and the land. For the most part, the term is used to describe the rainy period of a season. However, there is also a dry period associated with the term. Half of the world’s population live in areas affected by Asian monsoons, but monsoons are difficult to predict. American researchers have put together a 700-year record of the rainy seasons, which is expected to provide guidance for experts making weather predictions.

Every summer, moist(潮湿的)air masses, known as monsoon, produce large quantities of rainfall in India, East Asia, Indonesia, Northern Australia and East Africa, which are pulled in by a high pressure area over the Indian Ocean and a low pressure area to the south.

According to Edward Cook, a weather expert at Columbia University in New York, the complex nature of the climate systems across Asia makes monsoons hard to predict. In addition, climate records for the area date back to 1950, too recent and not detailed enough to be of much use. Therefore, he and a team of researchers spent more than fifteen years travelling across Asia searching for trees old enough to provide long-term records. They measured the rings(年轮)or circles, inside the trunks of thousands of ancient trees at more than 300 sites.

Rainfall has a direct link to the growth and width of rings on some kinds of trees. The researchers developed a document — a Monsoon Asia Drought Atlas(地图集). It shows the effect of monsoons over seven centuries, beginning in the 1300s.

Professor Cook says the tree-ring records show periods of wet and dry conditions. “If the monsoon basically fails or is very weak one year, the trees affected by the monsoon at that location might put on a very narrow ring. But if the monsoon is very strong, the trees affected by that monsoon might put on a wide ring for that year. So, the wide and narrow ring widths of the tree chronology(年表)that we developed in Asia provide us with a measure of monsoon variability. ” Armed with such a sweeping set of data, researchers say they now can begin to refine(提炼)climate computer models for predicting the behavior of monsoons.

“There has been widespread starvation and human dying in the past in large droughts. And on the other hand, if the monsoon is particularly heavy, it can cause extensive flooding,” said Eugene Wahl, a scientist who is with America’s National Oceanic and Atmospheric Administration’s paleoclimate(古气候)branch studying weather patterns over the history of the Earth. “So, to get a knowledge of what the regional moisture patterns have been, dryness and wetness over such a long period of time in great detail, I would call it a kind of victory for climate science.”

1. What’s the passage mainly about?
A.The achievements of Edward Cook.B.The necessity of weather forecast.
C.A breakthrough in monsoon prediction.D.The effects of Asian monsoons.
2. It is difficult for experts to predict Asian monsoons because ________.
A.it is hard to keep long-term climate records
B.they are formed under complex climate systems
C.they influence many nations
D.there is heavy rainfall in Asia
3. According to Professor Cook, the rings of the trees ________.
A.offer people information about the regional climate
B.have a great influence on the regional climate
C.determine the regional climate
D.reflect all kinds of regional climate information
4. What do we know about the research according to Eugene Wahl?
A.It will help people prevent droughts and floods.
B.It should include information about human life in the past.
C.It has analyzed moisture models worldwide.
D.It is a great achievement in climate science.
2022-12-31更新 | 107次组卷
阅读理解-阅读单选(约360词) | 适中 (0.65)

【推荐3】Much of the United States is locked by an unusually large winter storm, which has sent temperatures dropping sharply across the country, from coast to coast and as far south as southern Texas. In many areas, ice and snow storms have added to the challenges. Only a few areas in the south have dodged the freezing weather pattern. The National Weather Service( NWS) says that a winter storm, this large and this serious, has almost never been seen before.

The NWS reports that over 150 million Americans were under winter storm warnings. In Texas, over 2.7 million people were left without power on Monday. Texas isn't used to such serious winter weather. In the city of Houston, temperatures have dropped to - 9℃. The storm has led to huge, deadly highway accidents, and has forced its airport to cancel flights. On Sunday, President Joe Biden declared an emergency in Texas, allowing the state to get more help for the weather disaster from the US government. Several other states have declared some sort of weather-related emergency. In Washington and Oregon, warming shelters were opened to help people stay warm and safe.

The NWS says cold air from the Arctic is behind the record-breaking low temperatures. Though it may seem surprising, global warming may be one of the causes. A strong wind known as the jet stream usually flows in a circle around the Arctic, keeping super-cold air near the North Pole. But as the jet stream weakens because of climate change, the cold air is able to escape the Arctic and bring freezing temperatures to places that are normally much warmer.

The NWS is forecasting there’ll be more snow and freezing rain over the next few days as a new storm cuts up toward the Northeast from the middle of the country. The NWS says that much of the country will continue to have extremely cold temperatures, and it's likely that hundreds of cold weather records will be broken. Perhaps, people should think about the consequences of global warming.

1. Which can best replace the underlined word “dodged” in paragraph 1?
A.Seen.B.Recorded.
C.Avoided.D.Defeated.
2. Why does the author mention Texas?
A.It’s hit the hardest by extreme weather.
B.It's brought the super cold under control.
C.It's the first to warn of the climate disaster.
D.It's helping other states with the winter storm.
3. What does paragraph 3 mainly focus on?
A.How the jet stream forms in the Arctic.
B.What causes the extreme cold in America.
C.Why the cold air escapes from the Arctic.
D.When the global warming affects America.
4. What is the NWS’s prediction about the rough weather?
A.It’ll change climate permanently.B.It’ll cause another new storm.
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