________, the forest fire would have been dis...

________, the forest fire would have been discovered much earlier.

A. But for their care            B. Had they been more careful

C. Without their care           D. If they were careful

高三英语单项填空中等难度题查看答案及解析

_________, he would have been fired.

高三英语单项填空简单题查看答案及解析

The ruins of a Maya city have been discovered in Guatemala with the help of the remote sensing technique LiDAR. This lost city envelops sites like Tikal, Holmul, and Witzna, but shows that these famous areas are a small part of this lost urban network.

Hidden under the jungles of the Maya Biosphere Reserve site, more than 60,000 human-made features — homes, canals, highways, and more — have been identified in aerial (从飞机上的)images collected by some international researchers headed by the PAGUNAM Foundation, a Maya cultural and natural heritage organization. Those have experts rethinking the outlines and complexity of the Maya Empire.

These ancient peoples obviously created these imaginative cultures based on their known relics (遗迹), but the new research has suggested that the size of this lost society is far beyond what experts imagined. The findings will be explored in a one-hour documentary called “Lost Treasures of the Maya Snake Kings”, to be broadcast on the National Geographic Channel.

This breakthrough was possible thanks to LiDAR sensors, which can survey lands in 3D by bouncing pulses off the ground from unmanned air vehicles and others. LiDAR is exceptionally useful for detecting archeological(考古的)sites, as it gets through jungles and other features that hold up exploration on the ground. The technique has made many discoveries become a reality in recent years. For instance, major finds at Angkor, Cambodia and Caracol, Belize can explain what it did. The final goal is to survey Guatemala’s lowlands with it.

“There are entire cities we didn't know about now showing up in the survey data,” Francisco Estrada-Belli, one of the lead archeologists on the project, said in Nat Geo's coming documentary. “There are 20,000 square kilometres more to be explored and there are going to be hundreds of cities about the mysterious people who built this urban network there that we don’t know about, and we will push back the frontiers with the technology,” he added.

1.What does the underlined word "Those" in paragraph 2 refer to?

A.Jungles. B.Human-made features.

C.Researchers. D.Aerial images.

2.What does the author want to convey in paragraph 4?

A.The working principle of LiDAR sensors.

B.The process of researching Maya civilization.

C.Great importance of Guatemalans lowlands.

D.LiDAR’s contribution to discovering the relics.

3.Which words can best describe the lost Maya city?

A.Small and hidden. B.Famous and high-tech.

C.Vast and complex. D.Fully-explored and imaginative.

4.What will the archeologists do next?

A.Continue to explore the unknown. B.Upgrade the LiDAR technology.

C.Study the documentary carefully. D.Build a massive urban network,

高三英语阅读理解困难题查看答案及解析

The fact that ants are fascinating insects has been known for some time. Now, scientists have discovered a large number of wood ants living in an abandoned underground storehouse in Templewo, Poland, despite having no obvious source of food.

Polish zoologist Wojciech Czechowski and his team began studying the underground colony in 2013. They found the ants built a 60-cm high nest in the soil directly over the storehouse vertical air pipe. As years passed, the metal covering on the pipe eroded, leaving behind a hole that thousands of worker ants accidentally slip into each day as they go about their daily chores. The scientists say that there are no sources of food in the storehouse. This means that the insects live in a state of near starvation.

In July 2015, the researchers disturbed part of the ant nest in search of larvae (幼虫), cocoons(茧), and queens. They found nothing, leading them to suspect that the lack of food and cold temperatures made reproduction impossible and that the group tending the nest is entirely made up of non-reproductive female workers. Their population is refilled every year, by a new rain of unfortunate ants that slide down the hole. The researchers say that when they returned in January 2016, the nest had been repaired. It appears that despite the terrible conditions, the worker ants do not stop constructing their nest.

Wood ants are known for their ability to adapt to bad living conditions. In this case, the millions of worker ants trapped in the storehouse have no choice. But instead of losing hope, they are making the best of the situation—a classic example of “when life gives you lesions make lemonade.”

1.How did the wood ants arrive in the storehouse?

A. They fell down there by accident.

B. The research team brought them there.

C. The storehouse builders left them there.

D. They were attracted by the environment.

2.What does the underlined word “eroded” in Paragraph 2 probably mean?

A. Expanded.　　 B. Rotted.　　 C. Exploded.　　 D. Melted.

3.What did the researchers find in the nest?

A. Larvae.　　 B. Cocoons.　　 C. A queen.　　 D. Worker ants.

4.Why did the population of wood ants remain steady?

A. They had enough food.

B. They were able to reproduce.

C. They adapted to the conditions.

D. They had new comers to join them.

高三英语阅读理解中等难度题查看答案及解析

The Notre Dame fire has been put out, but its spire and a large portion of its wooden roof have been damaged. The terrible destruction causes a sudden sharp pain to people around the world. On Chinese social media network Wechat a common comment on the disaster is: “What a pity that we cannot see the damaged parts of the wonder anymore.”

But the good news is that there is at least one way of seeing them, namely via a video game called Assassin’s Creed: Unity. In this game, the player can travel to one city after another and enter the buildings exactly like what they are in reality, and see Notre Dame as it was before the fire. Further, with virtual reality technology, which is already quite mature, one can even look around the undamaged Notre Dame as if it is still there. Maybe digital technology could help to better protect architectural cultural heritage.

The idea of digitizing ancient buildings, making digital models of them so their data can be saved, dates back to the 1990s and the necessary technology has continued to advance since then. By scanning the ancient buildings with lasers, building 3D models with multiple images, as well as measuring everything precisely, engineers can make a copy as accurate as the real one.

As computers and smartphones are hugely popular, the digital replica has great use value. First, it allows tourists to feel the cultural relics without touching them, which helps protect them. The virtual tour of Dunhuang Grottoes in Gansu Province is a good example of this as tourists can view the paintings without standing near them. Furthermore, it can make the digitized cultural relics more famous by spreading awareness about them via the Internet. In 2000, a virtual tour of the Great Wall became very popular at the Hannover World Expo, which increased the number of foreign tourists visiting the site in the following years. Above all, it preserves all the information of the cultural relics. Even if the original ones are damaged one day, people can still know what they were like and can build a replica if desired.

Of course, however precise a model is, it is not the original. Time is the biggest threat to a country’s architectural heritage, which will always become ruins with the passing of time. Maybe we will have better technologies in the future, but the digital technology offers a practical way to preserve architectural cultural heritage at the moment.

1.What will engineers do to create a digital replica of the ancient buildings?

A.Improve the technology needed. B.Scan the photos of the buildings.

C.Build 3D models of full size. D.Measure all the parts exactly.

2.What value does a digital replica have?

A.It keeps the relics safe. B.It helps to guard the relics.

C.It gathers data of the relics. D.It advertises the history of the relics.

3.How does the author prove the digital copy has vital practical importance?

A.By comparison. B.By giving examples.

C.By classification. D.By listing data.

4.What is the author’s attitude towards the application of digital technology?

A.Doubtful. B.Ambiguous.

C.Supportive. D.Conservative.

高三英语阅读理解中等难度题查看答案及解析

Record fires sweeping across the Amazon this month have been grabbing global headlines as scientists and environmental groups are worried that they will worsen climate change crisis and threaten biodiversity.

As the largest rainforest in the world, the Amazon is often called “the lungs of the world”. It is also home to about 3 million species of plants and animals, and 1 million native people. The vast areas of rainforest play an important role in the world’s ecosystem because they absorb heat instead of it being reflected back into the atmosphere. They also store carbon dioxide and produce oxygen, ensuring that less carbon is released, mitigating the effects of climate change.

“Any forest destroyed is a threat to biodiversity and the people who use that biodiversity,” Thomas Lovejoy, an ecologist at George Mason University told National Geographic. “The overwhelming threat is that a lot of carbon goes into the atmosphere,” he stressed. “In the midst of the global climate crisis, we cannot afford more damage to a major source of oxygen and biodiversity. The Amazon must be protected,” U.N. Secretary General Antonio Guterres said.

Data from the National Institute for Space Research (INPE) show that the number of forest fires in Brazil quickly increased by 82 percent from January to August this year from a year ago. A total of 71,497 forest fires were registered in the country in the first eight months of 2019, up from 39,194 in the same period in 2018, INPE said. “We estimate that the forest areas in the Brazilian Amazon have decreased something between 20 and 30 percent compared to the last 12 months,” Carlos Nobre, a researcher at the University of Sao Paulo, told German broadcaster Deutsche Welle.

Brazil owns about 60 percent of the Amazon rainforest, whose degradation could have severe consequences for global climate and rainfall. The extent of the area ruined by fires has yet to be determined, but the emergency has transcended (超出) Brazil’s borders, reaching Peruvian, Paraguayan and Bolivian regions.

1.What is the second paragraph mainly talking about?

A.The effects of climate change. B.The role of the Amazon rainforest.

C.The results of the Amazon rainforest fires. D.The causes of the decreasing biodiversity.

2.What can we learn from Thomas’s and Antonio’s words?

A.The biodiversity makes the rainforests unique.

B.The rainforest fires result in serious consequences.

C.The global climate crisis brings more rainforest fires.

D.The dry weather leads to the rainforest fires.

3.Why does the author list the numbers in Paragraph 4?

A.To prove the importance of rainforest. B.To show the influence of forest fires.

C.To explain the process of the research. D.To present the reduction of rainforest areas.

4.What is the best title of this passage?

A.The climate change crisis is worsening. B.The forest areas are on the decline.

C.“The lungs of the earth” is burning. D.The world’s ecosystem is under attack.

高三英语阅读理解中等难度题查看答案及解析

The forest guards often find campfires that have not been ________ completely.

高三英语单项填空简单题查看答案及解析

．__________, we would not have achieved so much.

高三英语单项填空简单题查看答案及解析

Trip 1  Black Bear Count

There have been fires in this area in the last few years and the Office of the National Park is not sure how many black bears are still living.  Some bears have been seen since the fires, and the Office has asked for young people to help count them. The entire trip will last three hours. Bookings necessary.

Cost: Free              When: May 8

Trip 2  Garland Valley

Bring your drink and lunch for this walk in a beautiful  area of the  Blue  Mountains. Garland Valley is close to the town of Garland but is part of the National Park. Many wild animals live in this area, including many rare birds. This is a great walk for bird-lovers. The trip lasts four hours. Bookings necessary.

Cost: 15                     When: May 8, May 15

Trip 3  Flashlight Adventure

Put on your warm clothes, bring a flashlight and a pair of glasses, and come for a night walk along the Dungog Valley. A guide will lead the tour. Many of the animals you will see on this trip can only be seen at night. The guide will tell you about the lives of the animals you see. Numbers are strictly limited on night trips, so be sure to book early. This walk lasts two and a half hours.

Cost: 12                                When: May 8, May 15, May 22

Equipment to be needed:

     Please bring enough water and food for all walks.

     Wear good walking shoes--no high heels.

     Wear a hat for day walks.

     Dress warmly for night walks.

     Children must be with an adult.

     Make sure your flashlight works well and bring extra batteries for night walks.

     Follow all instructions from guides during the walks. The mountains are a dangerous place.

Bookings:

     Bookings for the above trips can be made by telephone (893-4847) or on the Internet at www. blue-mountaintour.com.

1.Where are these trips?

A. In a large valley.                                    B. In a park in the mountains.

C. In a special kind of zoo.                   D. In three different countries.

2.On which trip might you see animals that sleep during the day?

A. Black Bear Count.                           B. Garland Valley.

C. Flashlight Adventure.                          D. None of the trips.

3.Which of the following is NOT necessary for the three trips?

A. Good walking shoes.                       B. Plenty of batteries.

C. Food and water.                           D. A sleeping bag.

4.What is the best title for the passage?

A. Adventure travel in America.

B. Hunting around the Great Mountains.

C. Interesting trips in the East of the USA.

D. Discovery trips in the Blue Mountains.

高三英语阅读理解中等难度题查看答案及解析

Trip 1  Black Bear Count

There have been fires in this area in the last few years and the Office of the National Park is not sure how many black bears are still living. Some bears have been seen since the fires, and the Office has asked for young people to help count them. The entire trip will last three hours. Bookings necessary.

Cost: Free                          When: May 8

Trip 2  Garland Valley

Bring your drink and lunch for this walk in a beautiful area of the Blue Mountains. Garland Valley is close to the town of Garland but is part of the National Park. Many wild animals live in this area, including many rare birds. This is a great walk for bird-lovers. The trip lasts four hours. Bookings necessary.

Cost: $ 15                          When: May 8, May 15

Trip 3   Flashlight Adventure

Put on your warm clothes, bring a flashlight and a pair of glasses, and come for a night walk along the Dungog Valley. A guide will lead the tour. Many of the animals you will see on this trip can only be seen at night. The guide will tell you about the lives of the animals you see. Numbers are strictly limited on night trips, so be sure to book early. This walk lasts two and a half hours.

Cost: $ 12                          When: May 8, May 15, May22

Equipment to be needed:

•Please bring enough water and food for all walks.

•Wear good walking shoes—no high heels.

•Wear a hat for day walks.

•Dress warmly for night walks.

•Children must be with an adult.

•Make sure your flashlight works well and bring extra batteries for night walks.

•Follow all instructions from guides during the walks. The mountains are a dangerous place.

Bookings:

Bookings for the above trips can be traded by telephone (893 — 4847) or on the Internet at www. Bluemountaintour. com

1.Where are these trips?

A. In a large city.              B. In a park in the mountains.

C. In a special kind of zoo.      D. In three different countries.

2.On which trip might you see animals that sleep during the day?

A. Black Bear Count  B. Garland Valley

C. Flashlight Adventure  D. None of the trips.

3.Which of the following is NOT necessary for the three trips?

A. Good walking shoes    B. A pair of glasses

C. Food and water   D. A sleeping-bag

4.What is the best title for the passage?

A. Adventure Travel in America

B. Hunting around the Great Mountains

C. Interesting Trips in the East of the USA

D. Discovery Trips in the Blue Mountains

高三英语阅读理解中等难度题查看答案及解析