Over a hundred years ago in 1911, something strange was found in the glaciers of Antarctica. Grilffith Taylor—an Australian geologist, had discovered a blood red steam pouring out of the ice cascades（瀑布）of Talor Glacier! Popularly known as the Blood Falls, scientists had not been able to find the reason behind the blood red liquid flowing through the ice---until recently. The mystery of the Blood Falls had finally been solved.
When these falls were first discovered, scientists had believed that the red colour came from a large amount of red algae（海藻）concentrated in the water. Red algae contain a pigment（色素）which reflects red light, making the algae appear red.
This theory made sense, until it was later found that algae do not play a part in the red color of the flowing liquid at all. What really causes Talor Glacier’s waters appear blood red, is the presence of iron oxide in the liquid. The waters of the blood falls are rich in salt and iron content, and when this water comes in contact with the air, it turns red—just like rust! The water in these falls is often referred to as “brine” by scientists because of the high salt content in the water.
This reasoning behind the red colors of the falls was found back in 2003. However, the entire mystery had not yet been solved. How is it then, that the Blood Falls are not frozen?
Researchers at the University of Colorado and University of Alaska found that inside the glacier, there was a network of channels and reservoirs that move the water around. Salt water has a lower freezing temperature. In addition, when any substance undergoes a change in state, it gives off heat. Therefore, the brine actually warm itself up while it’s freezing! How this works, is that when the brine is flowing through the Talor Glacier, some of it does freeze. As a result of changing state from liquid to ice, the brine gives off heat. This heat is enough to keep the rest of the rest of the brine in liquid form, which is why it flows out of the glacier.
Incredible new chemistry facts found, any mystery solved!
1.According to the text, the red algae theory was once considered ________.
A.ridiculous B.reasonable
C.impractical D.complex
2.Why does the Blood Falls look red in colour?
A.Because there is too much salt and iron in its water.
B.Because its liquid is rich in red algae.
C.Because the following liquid reflects and sunlight
D.Because the air is thin and rare in Antarctica.
3.What is the main reason for the Blood Fall’s not freezing?
A.The water continued flowing constantly.
B.There is too much salt in the water.
C.The brine gives off heat while freezing
D.Temperatures aren’t high enough for flowing water.
4.What is the passage mainly about?
A.The discovery of the blood glacier.
B.The birth of the Talor Glacier.
C.The flowing red water in Antarctica.
D.The mystery of the Blood Falls.
高一英语阅读理解中等难度题
Over a hundred years ago in 1911, something strange was found in the glaciers of Antarctica. Grilffith Taylor—an Australian geologist, had discovered a blood red steam pouring out of the ice cascades（瀑布）of Talor Glacier! Popularly known as the Blood Falls, scientists had not been able to find the reason behind the blood red liquid flowing through the ice---until recently. The mystery of the Blood Falls had finally been solved.
When these falls were first discovered, scientists had believed that the red colour came from a large amount of red algae（海藻）concentrated in the water. Red algae contain a pigment（色素）which reflects red light, making the algae appear red.
This theory made sense, until it was later found that algae do not play a part in the red color of the flowing liquid at all. What really causes Talor Glacier’s waters appear blood red, is the presence of iron oxide in the liquid. The waters of the blood falls are rich in salt and iron content, and when this water comes in contact with the air, it turns red—just like rust! The water in these falls is often referred to as “brine” by scientists because of the high salt content in the water.
This reasoning behind the red colors of the falls was found back in 2003. However, the entire mystery had not yet been solved. How is it then, that the Blood Falls are not frozen?
Researchers at the University of Colorado and University of Alaska found that inside the glacier, there was a network of channels and reservoirs that move the water around. Salt water has a lower freezing temperature. In addition, when any substance undergoes a change in state, it gives off heat. Therefore, the brine actually warm itself up while it’s freezing! How this works, is that when the brine is flowing through the Talor Glacier, some of it does freeze. As a result of changing state from liquid to ice, the brine gives off heat. This heat is enough to keep the rest of the rest of the brine in liquid form, which is why it flows out of the glacier.
Incredible new chemistry facts found, any mystery solved!
1.According to the text, the red algae theory was once considered ________.
A.ridiculous B.reasonable
C.impractical D.complex
2.Why does the Blood Falls look red in colour?
A.Because there is too much salt and iron in its water.
B.Because its liquid is rich in red algae.
C.Because the following liquid reflects and sunlight
D.Because the air is thin and rare in Antarctica.
3.What is the main reason for the Blood Fall’s not freezing?
A.The water continued flowing constantly.
B.There is too much salt in the water.
C.The brine gives off heat while freezing
D.Temperatures aren’t high enough for flowing water.
4.What is the passage mainly about?
A.The discovery of the blood glacier.
B.The birth of the Talor Glacier.
C.The flowing red water in Antarctica.
D.The mystery of the Blood Falls.
高一英语阅读理解中等难度题查看答案及解析
Alice _____ in a book that the city she lives in was _____ one hundred years ago.
| A．found, found | B．founded, founded |
| C．founded, found | D．found, founded |
高一英语单项填空简单题查看答案及解析
We visited the British Museum in London ______ was built more than a hundred years ago.
A. where B. when
C. which D. what
高一英语单项填空中等难度题查看答案及解析
Over 40 years ago, a country music DJ convention (大会) was held every year in Nashville, Tennessee. Many country performers used to attend (参加) the convention to give their performances. Fans would go to Nashville hoping to see their favorite performers. In the end, so many fans began showing up in Nashville that a festival named Fan Fair was born.
The first Fan Fair was held in April 1972, in Nashville for four days. Some of country music's biggest stars attended. There were about fifty thousand fans. The first Fan Fair was so successful that planning began almost immediately for 1973. The date was changed to June, when the weather would be better. Over one hundred thousand fans attended the second Fan Fair.
Every year brought so many performers and fans to Fan Fair that, in 1982, it was moved to the Tennessee State Fairgrounds. Fan Fair stayed at the fairgrounds for another nineteen years.
There was always the unexpected during the festival. In 1974, former Beatle Paul McCartney attended. In 1992, more than six hundred reporters from Europe, Asia, and South America went to cover the appearance of a popular star, Billy Ray Cyrus, who had introduced a new country line dance. In 1996, Garth Brooks, who made a surprise appearance, signed autographs (签名) for 23 hours.
In 2001, Fan Fair returned to downtown Nashville as the world's biggest country music festival. Now, over one hundred and twenty-five thousand country music fans go to Nashville every June. As you can imagine, those who want to attend Fan Fair must plan ahead. For example, they need to buy a ticket several months ahead of time. Of course, there's much more to prepare.
1.According to the text, Fan Fair _____.
A. has a history of more than 50 years
B. lasts almost half a month every year
C. is the most important music festival in America
D. is a time when country music lovers get together
2.The second Fan Fair _____.
A. was held in the spring of 1972
B. was more popular than the first one
C. was moved from Nashville to the fairgrounds
D. was attended by former Beatle Paul McCartney
3.The purpose of the fourth paragraph is to _____.
A. show why Fan Fair has been popular
B. introduce three famous musicians
C. explain how Fan Fair started
D. ask people to attend Fan Fair
4.What will the author probably talk about next?
A. Advice for fans.
B. Music in America.
C. Education in Nashville.
D. The future of country music.
高一英语阅读理解中等难度题查看答案及解析
Over 40 years ago, a country music DJ convention (大会) was held every year in Nashville, Tennessee. Many country performers used to attend (参加) the convention to give their performances. Fans would go to Nashville hoping to see their favorite performers. In the end, so many fans began showing up in Nashville that a festival named Fan Fair was born.
The first Fan Fair was held in April 1972, in Nashville for four days. Some of country music's biggest stars attended. There were about fifty thousand fans. The first Fan Fair was so successful that planning began almost immediately for 1973. The date was changed to June, when the weather would be better. Over one hundred thousand fans attended the second Fan Fair.
Every year brought so many performers and fans to Fan Fair that, in 1982, it was moved to the Tennessee State Fairgrounds. Fan Fair stayed at the fairgrounds for another nineteen years.
There was always the unexpected during the festival. In 1974, former Beatle Paul McCartney attended. In 1992, more than six hundred reporters from Europe, Asia, and South America went to cover the appearance of a popular star, Billy Ray Cyrus, who had introduced a new country line dance. In 1996, Garth Brooks, who made a surprise appearance, signed autographs (签名) for 23 hours.
In 2001, Fan Fair returned to downtown Nashville as the world's biggest country music festival. Now, over one hundred and twenty-five thousand country music fans go to Nashville every June. As you can imagine, those who want to attend Fan Fair must plan ahead. For example, they need to buy a ticket several months ahead of time. Of course, there's much more to prepare.
1.According to the text, Fan Fair _____.
A. has a history of more than 50 years
B. lasts almost half a month every year
C. is the most important music festival in America
D. is a time when country music lovers get together
2.The second Fan Fair _____.
A. was held in the spring of 1972
B. was more popular than the first one
C. was moved from Nashville to the fairgrounds
D. was attended by former Beatle Paul McCartney
3.The purpose of the fourth paragraph is to _____.
A. show why Fan Fair has been popular
B. introduce three famous musicians
C. explain how Fan Fair started
D. ask people to attend Fan Fair
4.What will the author probably talk about next?
A. Advice for fans.
B. Music in America.
C. Education in Nashville.
D. The future of country music.
高一英语阅读理解中等难度题查看答案及解析
In the past few years, several Non-Governmental Organizations ______ all over the world.
A. have founded B. have been founded
C. are founding D. are being founded
高一英语单项填空中等难度题查看答案及解析
Five years ago, I was sent to a better middle school. For me, everything there was new and strange. After I had been there for two months, there was an important test in the middle of the term. It covered all my courses. In that test, I didn’t get a good grade, but most of my classmates got an A or A’.
It made me upset for a long time. I felt everything in the world was changing. I thought my classmates were all better than me. During those days I was very unhappy.
One day, my aunt, after talking with my teachers, talked to me. She told me to think about what I had done in the past and what I should do in the future. I was shocked by her words. I thought about what I had done during the past months, and I found I had done nothing to improve my grades. I thought I should work harder.
After that, I paid more attention to the teachers’ talking in the classes, and I asked my teachers or my classmates when I didn’t understand something. I studied very late at night when I met with difficult problems. Most of all, I came to understand the importance of taking notes in class. As a result, I did better in some tests.
About three months later, the most important test came at the end of the term. This time, I stood out not only in my class but also in the grade. From then on, I have tried to do my best when I do something because I know if I want something, I should work hard for it.
1.Why did the writer fall behind in the new middle school?
A. Because the teachers didn’t treat him well enough.
B. Because the subjects were becoming more difficult.
C. Because he hated the life in the new school.
D. Because he didn’t put his heart into study.
2.What did the writer’s aunt do to help him out?
A. She punished him for not working hard.
B. She helped him find out the reasons for his poor performance.
C. She forced him to work harder.
D. She asked his teachers to talk with him about his problems.
3. Which of the following studying methods helped the writer most?
A. Asking teachers for help when in difficulty. B. Working deep into the night every day.
C. Making notes in class. D. Listening to every word his teachers said.
4.What does the underlined sentence in the last paragraph mean?
A. The writer failed again in the exam. B. The writer did very well in the exam.
C. The writer became the cleverest in the class. D. The writer was very proud of his progress.
高一英语阅读理解中等难度题查看答案及解析
Five years ago, I was sent to a better middle school. For me, everything there was new and strange. After I have been there for two months, there was an important test in the middle of the term. It covered all my courses. In that test, I didn’t get a good grades, but most of my classmates got an A or A.
It made me upset for a long time. I felt everything in the world was changing. I thought my classmates were all better than me. During those days I was very unhappy.
One day, my aunt, after talking about what I had done in the past and what I should do in the future. I was shocked by her words. I thought about what I had done during the past months, and I found I had done nothing to improve my grades. I thought I should work harder.
After that, I paid more attention to the teachers’ talking in the classes, and I asked my teachers or my classmates when I didn’t understand something. I studied very late at night when I met with difficult problems. Most of all, I came to understand the importance of taking notes in class. As a result, I did better in some tests.
About three months later, the most important test came at the end of the term. This time, I stood out not only in my class but also in the grade. From then on, I have tried to do my best when I do something because I know if I want something, I should work hard for it.
1.Why did the writer fall behind in the new middle school?.
A. Because the teachers did not treat him well enough.
B. Because the subjects were becoming more difficult.
C. Because he hated the life in the new school.
D. Because he didn’t put his heart into study.
2.What did the writer’s aunt do to help him out?
A. She punished him for not working hard.
B. She helped him find out the reasons for his poor performance.
C. She forced him to work harder.
D. She asked his teachers to talk with him about his problems.
3.Which of the following learning methods helped the writer most?
A. Making notes in class.
B. Working deep into the night every day.
C. Asking teachers for help when in difficulty.
D. Listening to every word his teachers said.
4.What does the underlined sentence mean?
A. The writer failed again in the exam.
B. The writer became the cleverest in the class.
C. The writer did very well in the exam.
D. The writer was very proud of his progress.
高一英语阅读理解中等难度题查看答案及解析
Hundreds of years ago, life was much harder than it is today. People didn’t have modern machines. There was no modern medicine, either.
Life today has brought new problems. One of the biggest is pollution. Water pollution has made our rivers and lakes dirty. It kills our fish and pollutes our drinking water. Noise pollution makes us talk louder and become angry more easily. Air pollution is the most serious kind of pollution. It’s bad to all living things in the world.
Cars, planes and factories all pollute our air every day. Sometimes the polluted air is so thick that it is like a quilt over a city. This kind of quilt is called smog.
Many countries are making rules to flight pollution. Factories must now clean their water before it is thrown away, and they mustn’t blow dirty smoke into the air.
We need to do many other things. We can put waste things in the dustbin and do not throw them on the ground, there will be less pollution.
Rules are not enough. Every person must help to fight pollution.
1.Hundreds of years ago, life was much harder than it is today because ______.
| A．there were not any modern machines |
| B．there was no modern medicine |
| C．both A and B |
| D．there were not many people |
2.What is the biggest problem in today’s life?
| A．Water pollution |
| B．Air pollution |
| C．Noise |
| D．Pollution |
3.The most serious kind of pollution is ______.
| A．noise pollution |
| B．air pollution |
| C．water pollution |
| D．A, B and C |
4.Factories must clean their water ______.
| A．before they are thrown away |
| B．when they are thrown away |
| C．after it is thrown away |
| D．before it is thrown away |
5.From the passage we know that ______.
| A．a few years ago, there was no smog at all |
| B．today people don’t have to talk to each other in a loud voice |
| C．we can drink water from the polluted rivers and lakes |
| D．people are making rules in order to fight pollution |
高一英语阅读理解中等难度题查看答案及解析
Hundreds of years ago, life was much harder than it is today. People didn’t have modern machines. There was no modern medicine, either.
Life today has brought new problems. One of the biggest is pollution. Water pollution has made our rivers and lakes dirty. It kills our fish and pollutes our drinking water. Noise pollution makes us talk louder and become angry easily. Air pollution is the most serious kind of pollution. It is bad for all living things in the world.
Many countries are making rules to fight pollution. We need to do many other things. We should put waste things in the dustbins instead of on the ground. We can go to work by bus or with our friends in the same car. If there are fewer people driving, less pollution will be made. Rules are not enough to solve the problems. Every person must help to fight pollution.
1.Hundreds of years ago, life was much harder than it is today because _____.
| A．there were not any modern machines | B．there was no modern medicine |
| C．there were not many people | D．both A and B |
2.What is the most serious problem in today’s life?
| A．water pollution | B．air pollution | C．noise pollution | D．pollution |
3.Why do people speak louder now than before?
| A．people are stronger | B．people are afraid of nothing |
| C．there is much noise | D．people have problem in hearing |
4.What does the writer ask readers to do?
| A．each country should make its own rules to fight pollution |
| B．every person must help to fight pollution |
| C．all people should take buses |
| D．we should control the population |
5.From the passage, we know that _____.
A. the pollution is not serious
B today people don’t talk in loud voice
C. we have to drink dirty water
D. people are making rules to control pollution
高一英语阅读理解中等难度题查看答案及解析