Antarctica holds 90% of the world’s ice, and ...

Antarctica holds 90% of the world’s ice, and most of its fresh water (70%) is in a frozen ________.

A. state                B. condition            C. situation            D. solution

高三英语单项填空中等难度题查看答案及解析

Antarctica is known for being a vast land of ice and snow, a place too cold for most life. Despite this, the continent is slowly starting to turn warm. According to the Guardian, the Antarctic has registered a new high temperature for the first time on record, prompting fears of climate instability in the world's iciest place.

On Feb 9, Brazilian researchers at Seymour Island reported a temperature of 20.75℃ on the icy continent of Antarctica. It was almost a full degree higher than the previous re- cord of 19. 8℃ , taken on Signy Island in January 1982.

This record — breaking reading was taken at a monitoring station in the northern part of Antarctica. According to Brazilian soil scientist Carlos Schaefer, the temperature was documented during a 20-year-long research project. The focus of this project is to study the effect that climate change has on the permafrost(永久冻土) within the region. Permafrost is soil that stays frozen for at least two years. Although this is a first record high for Antarctica, Schaefer stressed that “We can't use this to anticipate climatic changes in the future. It's simply a signal that something different is happening in that area.”

But in fact, the last high temperature reading was in the 19℃range. These higher temperatures can cause ice and glaciers in Antarctic regions to melt. The Antarctic peninsula—the long finger of land that stretches towards Argentina—is most dramatically affected. Scientists saw glaciers that have retreated by more than 100 meters in Discovery Bay where the snow melted in little more than a week, leaving dark exposed rock. This melted ice leads to a rise in sea levels that can threaten the safety of coastal areas. It's believed to be behind an alarming decline of more than 50 percent in chinstrap penguin(帽带企鹅) colonies, which are dependent on sea ice.

Like American writer Ernest Hemingway once said, “The Earth is a fine place and worth fighting for.” We should do everything we can to help save our planet. Otherwise, it may become too hot for us to fix.

1.What did Brazilian researchers report on Feb 9?

A.Seymour Island is the warmest region in the Antarctic.

B.Antarctica hit a record high temperature of 20. 75℃.

C.The average temperature of Antarctica ranges from 19. 8°C to 20. 75℃.

D.Antarctica's new record temperature is a full degree higher than the previous decade.

2.What's the main purpose of the 20-year-long research project?

A.To predict possible climatic change in the future.

B.To monitor Antarctica's contributions to world climate change.

C.To explain why the permafrost may cause glaciers to melt.

D.To examine how the permafrost is influenced by climate change.

3.What does the underlined word “retreated” probably mean?

A.moved backward. B.increased in size.

C.covered a certain area. D.stretched in an opposite direction.

4.According to the text, the melted glacier may lead to　　　　　 .

A.the pollution of ocean water B.the release of various viruses

C.threats to penguin habitats D.disappearances of coastal cities

高三英语阅读理解中等难度题查看答案及解析

Antarctica has become one of the world’s most popular tourist destinations. Since 1969, the average number of visitors to the continent has increased from several hundred to over 34,000 today. All activities in Antarctica are heavily supervised by the Antarctic treaty for environmental protection purposes and the industry is largely managed by the International Association of Antarctica Tour Operators (IAATO).

The first expedition (探险) to Antarctica with travelers was in 1966, led by Swedish explorer Lars Eric Lindblad. He wanted to give tourists first-hand experience of the ecological sensitivity of the Antarctic environment, in order to educate them and promote a greater understanding of the continent’s role in the world. In 1969, Lindblad built the world’s first expedition ship, the MS Lindblad Explorer, which was specifically designed to transport tourists to Antarctica.

In 1977, both Australia and New Zealand started to offer scenic flights to Antarctica through Qantas and Air New Zealand. The flights often flew to the continent without landing and returned to the departure airport. The experience was an average 12 to 14 hours with up to 4 hours of flying directly over the continent. The flights from Australia and New Zealand stopped in 1980. It was largely due to the Air New Zealand Flight 901 accident on November 28, 1979. In 1994, flights to Antarctica continued again.

Despite the potential dangers and risks, trips to Antarctica continued to grow. According to IAATO, 34,354 travelers visited the continent between 2012 and 2013. Americans contributed to the largest share with 10,677 visitors, or 31.1%, followed by Germans 11.1%, Australians 10.7%, and the British 10.2%. The rest of the visitors were from China, Canada, Switzerland, France and elsewhere.

The cost of a trip to Antarctica can range from as little as $3,000-$4,000 to over $40,000, depending on the scope of transportation, housing, and activity needs. The higher end packages typically involve air transport, on-site camping, and a visit to the South Pole.

1.Which can best replace the underlined word “supervised” in Paragraph 1?

A.Protected. B.Monitored.

C.Supported. D.Forbidden.

2.What’s Lars Eric Lindblad’s original purpose in getting to Antarctica?

A.To make himself the first explorer to go to Antarctica.

B.To transport more and more tourists to Antarctica.

C.To get first-hand experience of precious resources.

D.To let people know the significance of the continent.

3.What do we know about the flights to Antarctica?

A.They were once cancelled for more than ten years due to dangers.

B.Natural conditions of Antarctica are unable to support their landing.

C.It takes 14 hours to fly from New Zealand to Antarctica directly.

D.Air New Zealand has much success in developing Antarctic tourism.

4.What can be learned from the passage?

A.It is very convenient for Americans to travel to Antarctica.

B.The travelers usually have 4 hours’ sightseeing on the continent.

C.The number of people travelling to Antarctica is increasing.

D.New Zealand is the first country to offer scenic flights to Antarctica.

5.What’s the best title for the text?

A.The development of Antarctica B.Antarctica, a dream tourist attraction

C.The history of tourism in Antarctica D.IAATO, a great organization

高三英语阅读理解中等难度题查看答案及解析

Almost 90% of the most popular video games contain violence, and ________ of it is extremely violent.

A．nothing　     B．much

C．none　     D．many

高三英语单项填空中等难度题查看答案及解析

eXp Realty is one of the world's fastest-growing and most successful real estate （房地产） companies. It has become famous not for investing in actual real estate, but for focusing on

virtual reality offices that allow its agents and brokers （中间商）to interact and socialize from anywhere around the globe.

Glenn Sanford, eXp Realty's founder and CEO, founded the company a decade ago, soon after the real estate market collapse of 2007. He couldn't afford to buy or rent office space. What's more important, he figured that focusing on a system that allowed his team to work remotely would help the company avoid possible real estate crises in the future. So eXp Realty relied on services like Google Docs, project management solutions like Trello, and communications app Slack to help its workforce work together in virtual reality. "The virtual campus is a big part of our growth engine. If we were limited to actual offices, the growth we've had simply wouldn't be possible," Scott Petronis, chief technology officer of eXp Realty said.

Having a virtual campus in the virtual world rather than in the real one apparently has several major advantages. For the most important one, eXp Realty can hire whatever talent they like, no matter where they are. As long as they have Internet connection, they can interact with their colleagues and the company management like avatars （虚拟人）because they can walk around the campus, enter various virtual facilities, and interact with each other. While the main focus is on work and brainstorming, eXp Realty is constantly adding fun stuff as well, like riding on a virtual lake and enjoying a drink at the bar.

At the beginning of 2018, eXp Realty had around 6,500 brokers, but till today that number has increased to over 12,000. They are operating in 300 markets across the US and Canada. If that isn't enough to convince you, the company was recently listed on the Nasdaq Stock Market, with first-day market capitalization of over $1 billion. But it doesn't own or lease any more physical space than what is required by law.

1.What do we know about eXp Realty?

A.It relies much on technology.

B.It was founded by accident.

C.It's famous for its large offices.

D.It's a branch company of Google.

2.What mainly inspired Glenn Sanford to adopt virtual offices?

A.He could work closely with famous online services.

B.He is quite professional in the field of information technology.

C.Virtual offices can enable him to avoid potential real estate crises.

D.The starting base for the virtual real estate market was low at that time.

3.What's the biggest advantage of having a virtual campus?

A.Agents and brokers can communicate timely.

B.It helps attract talents regardless of their location.

C.Companies can cooperate with high-tech avatars.

D.Employees can have a relaxing work environment.

4.We can infer from the last paragraph that eXp .

A.is really a success

B.has some illegal businesses

C.is expanding its business worldwide

D.has poor performance in the stock market

5.What might be the best title of the passage?

A.Why Does Real Estate Industry Grow So Quickly?

B.Billion Dollar Real Estate Company一eXp Realty

C.Virtual Reality Office Vs. Physical Office Space

D.What Can Virtual Reality Do to Our Business?

高三英语阅读理解困难题查看答案及解析

Far from the land of Antarctica, a huge shelf of ice meets the ocean. At the underside of the shelf there lives a small fish, the Antarctic cod.

For forty years scientists have been curious about that fish. How does it live where most fish would freeze to death? It must have some secret. The Antarctic is not a comfortable place to work and research has been slow. Now it seems we have an answer.

Research was begun by cutting holes in the ice and catching the fish. Scientists studied the fish’s blood and measured its freezing point.

The fish were taken from seawater that had a temperature of -1.88℃ and many tiny pieces of ice floating in it. The blood of the fish did not begin to freeze until its temperature was lowered to -2.05℃. That small difference is enough for the fish to live at the freezing temperature of the ice-salt mixture.

The scientists’ next research job was clear: Find out what in the fish’s blood kept it from freezing. Their search led to some really strange thing made up of a protein(蛋白质) never before seen in the blood of a fish. When it was removed, the blood froze at seawater temperature. When it was put back, the blood again had its antifreeze quality and a lowered freezing point.

Study showed that it is an unusual kind of protein. It has many small sugar molecules(分子) held in special positions within each big protein molecules. Because of its sugar content, it is called a glycoprotein. So it has come to be called the antifreeze fish glycoprotein, or AFGP.

49. What is the text mainly about?

A. The terrible conditions in the Antarctic.          B. A special fish living in freezing waters.

C. The ice shelf around Antarctic.                  D. Protection of the Antarctic cod.

50. Why can the Antarctic cod live at the freezing temperature?

A. The seawater has a temperature of -1.88℃.

B. It loves to live in the ice-salt mixture.

C. A special protein keeps it from freezing.

D. Its blood has a temperature lower than -2.05℃.

51. What does the underlined word “it” in Paragraph 5 refer to?

A. A type of ice-salt mixture.                      B. A newly found protein.

C. Fish blood.                                           D. Sugar molecule.

52. What does “glycol” in the underlined word “glycoprotein” in the last paragraph mean?

A. sugar                      B. ice                   C. blood                      D. molecule

高三英语阅读理解简单题查看答案及解析

Far from the land of Antarctica (南极洲), a huge shelf of ice meets the ocean. At the underside of the shelf there lives a small fish, the Antarctic cod.

For forty years scientists have been curious about that fish. How does it live where most fish would freeze to death? It must have some secret. The Antarctic is not a comfortable place to work and research has been slow. Now it seems we have an answer.

Research was begun by cutting holes in the ice and catching the fish. Scientists studied the fish’s blood and measured its freezing point.

The fish were taken from seawater that had a temperature of -1.88℃ and many tiny pieces of ice floating in it. The blood of the fish did not begin to freeze until its temperature was lowered to -2.05℃. That small difference is enough for the fish to live at the freezing temperature of the ice-salt mixture.

The scientists’ next research job was clear: Find out what in the fish’s blood kept it from freezing. Their search led to some really strange thing made up of a protein (蛋白质) never before seen in the blood of a fish. When it was removed, the blood froze at seawater temperature. When it was put back, the blood again had its antifreeze quality and a lowered freezing point.

Study showed that it is an unusual kind of protein. It has many small sugar molecules (分子) held in special positions within each big protein molecule. Because of its sugar content, it is called a glycoprotein. So it has come to be called the antifreeze fish glycoprotein, or AFGP.

1.What is the text mainly about?

A．The terrible conditions in the Antarctic.

B．A special fish living in freezing waters.

C．The ice shelf around Antarctica.

D．Protection of the Antarctic cod.

2.Why can the Antarctic cod live at the freezing temperature?

A．The seawater has a temperature of - l.88℃

B．It loves to live in the ice-salt mixture.

C．A special protein keeps it from freezing.

D．Its blood has a temperature lower than -2.05℃

3.What does the underlined word “it” in Paragraph 5 refer to?

A．A type of ice-salt mixture.                 B．A newly found protein

C．Fish blood.                             D．Sugar molecule.

4.What does “glyco-” in the underlined word “glycoprotein” in the last paragraph mean?

A．sugar             B．ice               C．blood             D．molecule

高三英语阅读理解中等难度题查看答案及解析

Far from the land of Antarctica (南极洲), a huge shelf of ice meets the ocean. At the underside of the shelf there lives a small fish, the Antarctic cod.

For forty years scientists have been curious about that fish. How does it live where most fish would freeze to death? It must have some secret. The Antarctic is not a comfortable place to work and research has been slow. Now it seems we have an answer. Research was begun by cutting holes in the ice and catching the fish. Scientists studied the fish’s blood and measured its freezing point. The fish were taken from seawater that had a temperature of -1.88°C and many tiny pieces of ice floating in it. The blood of the fish did not begin to freeze until its temperature was lowered to -2.05°C. That small difference is enough for the fish to live at the freezing temperature of the ice-salt mixture.

The scientists’ next research job was clear: Find out what in the fish’s blood kept it from freezing. Their search led to some really strange thing made up of a protein (蛋白质) never before seen in the blood of a fish. When it was removed, the blood froze at seawater temperature. When it was put back, the blood again had its antifreeze quality and a lowered freezing point.

Study showed that it is an unusual kind of protein. It has many small sugar molecules held in special positions within each big protein molecule. Because of its sugar content, it is called a glycoprotein. So it has come to be called the antifreeze fish glycoprotein, or AFGP.

1. What is the text mainly about?

A. The terrible conditions in the Antarctic.        B. A special fish living in freezing waters.

C. The ice shelf around Antarctica.             D. Protection of the Antarctic cod.

2.Why can the Antarctic cod live at the freezing temperature?

A. The seawater has a temperature of -1.88°C.   B. it loves to live in the ice-salt mixture

C. A special protein keeps it from freezing.

D. Its blood has a temperature lower than -2.05°C.

3.What does the underlined word “it” in Paragraph 5 refer to?

A. A type of ice-salt mixture.              B. A newly found protein.

C. Fish blood.                          D. Sugar molecule.

4.What does “glyco-” in the underlined word “glycoprotein” in the last paragraph mean?

A. sugar                B. ice          C. blood            D. molecule

高三英语阅读理解困难题查看答案及解析

Far from the land of Antarctica(南极洲), a huge shelf of ice meets the ocean. At the underside of the shelf there lives a small fish, the Antarctic cod.

For forty years scientists have been curious about that fish. How does it live where most fish would freeze to death? It must have some secret. The Antarctic is not a comfortable place to work and research has been slow. Now it seems we have an answer.

Research was begun by cutting holes in the ice and catching the fish. Scientists studied the fish’s blood and measured its freezing point.

The fish were taken from seawater that had a temperature of -1.88℃ and many tiny pieces of ice floating in it. The blood of the fish did not begin to freeze until its temperature was lowered to -2.05℃. That small difference is enough for the fish to live at the freezing temperature of the ice-salt mixture.

The scientists’ next research job was clear: Find out what in the fish’s blood kept it from freezing. Their search led to some really strange thing made up of a protein(蛋白质) never before seen in the blood of a fish. When it was removed, the blood froze at seawater temperature. When it was put back, the blood again had its antifreeze quality and a lowered freezing point.

Study showed that it is an unusual kind of protein. It has many small sugar molecules(分子) held in special positions within each big protein molecule. Because of its sugar content. It is called a glycoprotein. So it has come to be called the antifreeze fish glycoprotein. Or AFGP.

1.What is the text mainly about?

A. The terrible conditions in the Antarctic.

B. A special fish living in freezing waters.

C. The ice shelf around Antarctica.

D. Protection of the Antarctic cod.

2.Why can the Antarctic cod live at the freezing temperature?

A. The seawater has a temperature of -1.88℃.

B. It loves to live in the ice-salt mixture.

C. A special protein keeps it from freezing.

D. Its blood has a temperature lower than -2.05℃.

3.What does the underlined word “it” in Paragraph 5 refer to?

A. A type of ice-salt mixture.       B. A newly found protein.

C. Fish blood.                   D. Sugar molecule.

4.What does “glycol-” in the underlined word “glycoprotein” in the last paragraph mean?

A. sugar         B. ice          C. blood            D. molecule

高三英语阅读理解中等难度题查看答案及解析

Far from the land of Antarctica(南极洲), a huge shelf of ice meets the ocean. At the underside of the shelf there lives a small fish, the Antarctic cod.

For forty years scientists have been curious about that fish. How does it live where most fish would freeze to death? It must have some secret. The Antarctic is not a comfortable place to work and research has been slow. Now it seems we have an answer.

Research was begun by cutting holes in the ice and catching the fish. Scientists studied the fish’s blood and measured its freezing point.

The fish were taken from seawater that had a temperature of -1.88℃ and many tiny pieces of ice floating in it. The blood of the fish did not begin to freeze until its temperature was lowered to -2.05℃. That small difference is enough for the fish to live at the freezing temperature of the ice-salt mixture.

The scientists’ next research job was clear: Find out what in the fish’s blood kept it from freezing. Their search led to some really strange thing made up of a protein(蛋白质) never before seen in the blood of a fish. When it was removed, the blood froze at seawater temperature. When it was put back, the blood again had its antifreeze quality and a lowered freezing point.

Study showed that it is an unusual kind of protein. It has many small sugar molecules(分子) held in special positions within each big protein molecule. Because of its sugar content. It is called a glycoprotein. So it has come to be called the antifreeze fish glycoprotein. Or AFGP.

1.What is the text mainly about?

2.Why can the Antarctic cod live at the freezing temperature?

3.What does the underlined word “it” in Paragraph 5 refer to?

4.What does “glycol-” in the underlined word “glycoprotein” in the last paragraph mean?

高三英语阅读理解简单题查看答案及解析