Did you know that people who live in different parts of China have different habits and preferences？
For example， people from southern China prefer to eat vegetables， while people from north China like to eat meat． But what causes these differences？
According to a new study published in the journal Cell in October， gene variations （基因变异） might be responsible for these differences， Xinhua reported．
In the study， researchers from Chinese genome-sequencing （基因组测序） firm BGI collected genetic information from 141，431 Chinese women． The women came from 31 provinces and consisted of 36 ethnic minority groups．
The researchers found that there are six gene frequencies that are different among people from both northern and southern China． They found that natural selection has played an important role in the ways that people living in different regions of China have evolved， affecting their food preferences， immunities （免疫性） to illness and physical traits （特点）， the New York Times reported．
The researchers reported that a variation of the gene FADS2 is more commonly found in northern people than it is in southern people． It helps people metabolize （新陈代谢） fatty acids （脂肪酸）， which suggests a diet that is rich in meat． According to Xinhua， this is due to climate differences． Northern China is at a higher latitude， which means it's cold and dry throughout the whole year． This weather is difficult to grow vegetables in． Therefore， northerners tend to eat more meat．
The study also found differences in the immune systems of both groups． Most people in southern China carry the gene CR1， which protects against malaria （疟疾）． This is because malaria was once quite common in southern China． In order to survive， the genes of people in the south evolved to fight against this disease． However， people in the south are also more vulnerable to certain blood-borne illnesses， as they lack the genes to stop them．
Genes can also cause physical differences between northerners and southerners． Most northerners have the ABCC11 gene， which causes dry earwax （耳屎）， less body odor and fewer sweat secretions （分泌）， The New York Times reported． These physical differences are also more beneficial to living in cold environments． Southerners are less likely to have this gene， as it did not evolve in their population．
1.What's the new study mainly about？ ______
A. The genes of Chinese minority groups．
B. Habits of people from different regions of China．
C. Differences in the genes of people from different parts of China．
D. Physical differences between northerners and southerners．
2.A variation of the gene FADS2can help our body ______ ．
A. store fat B. digest meat
C. fight disease D. control body temperature
3.The underlined word "vulnerable" in Paragraph 7 is closest in meaning to ______ ．
A. unprotected B. uninterested
C. generous D. responsible
4.Compared with people in south China， most northerners ______ ．
a．are immune to malaria
b．catch blood-borne illnesses easily
c．have less body odor
d．sweat less frequently
A. ab B. bc
C. bd D. cd
高三英语阅读理解中等难度题
Did you know that people who live in different parts of China have different habits and preferences？
For example， people from southern China prefer to eat vegetables， while people from north China like to eat meat． But what causes these differences？
According to a new study published in the journal Cell in October， gene variations （基因变异） might be responsible for these differences， Xinhua reported．
In the study， researchers from Chinese genome-sequencing （基因组测序） firm BGI collected genetic information from 141，431 Chinese women． The women came from 31 provinces and consisted of 36 ethnic minority groups．
The researchers found that there are six gene frequencies that are different among people from both northern and southern China． They found that natural selection has played an important role in the ways that people living in different regions of China have evolved， affecting their food preferences， immunities （免疫性） to illness and physical traits （特点）， the New York Times reported．
The researchers reported that a variation of the gene FADS2 is more commonly found in northern people than it is in southern people． It helps people metabolize （新陈代谢） fatty acids （脂肪酸）， which suggests a diet that is rich in meat． According to Xinhua， this is due to climate differences． Northern China is at a higher latitude， which means it's cold and dry throughout the whole year． This weather is difficult to grow vegetables in． Therefore， northerners tend to eat more meat．
The study also found differences in the immune systems of both groups． Most people in southern China carry the gene CR1， which protects against malaria （疟疾）． This is because malaria was once quite common in southern China． In order to survive， the genes of people in the south evolved to fight against this disease． However， people in the south are also more vulnerable to certain blood-borne illnesses， as they lack the genes to stop them．
Genes can also cause physical differences between northerners and southerners． Most northerners have the ABCC11 gene， which causes dry earwax （耳屎）， less body odor and fewer sweat secretions （分泌）， The New York Times reported． These physical differences are also more beneficial to living in cold environments． Southerners are less likely to have this gene， as it did not evolve in their population．
1.What's the new study mainly about？ ______
A. The genes of Chinese minority groups．
B. Habits of people from different regions of China．
C. Differences in the genes of people from different parts of China．
D. Physical differences between northerners and southerners．
2.A variation of the gene FADS2can help our body ______ ．
A. store fat B. digest meat
C. fight disease D. control body temperature
3.The underlined word "vulnerable" in Paragraph 7 is closest in meaning to ______ ．
A. unprotected B. uninterested
C. generous D. responsible
4.Compared with people in south China， most northerners ______ ．
a．are immune to malaria
b．catch blood-borne illnesses easily
c．have less body odor
d．sweat less frequently
A. ab B. bc
C. bd D. cd
高三英语阅读理解中等难度题查看答案及解析
Did you know people who live in different parts of China have different habits and preferences? For example, people from southern China prefer to eat vegetables, while people from north China like to eat meat. According to a new study in a journal, gene variations (基因变异) might be responsible for these differences. Researchers from China’s BGI collected genetic information from 141, 431 Chinese women, who came from 31 provinces and consisted of 36 ethnic minority groups.
The researchers found that there are six gene frequencies that are different among people from both northern and southern China. They found that natural selection has played an important role in the ways that people living in different regions of China have developed, affecting their food preferences, immunities(免疫力)to illness and physical features.
A variation of the gene FADS2 is more commonly found in northern people. It helps people metabolize (新陈代谢) fatty acids, which suggests a diet that is rich in flesh. This is due to climate differences. Northern China is at a higher latitude. This weather is difficult to grow vegetables in. Therefore, northerners tend to eat more meat.
The study also found differences in the immune systems of both groups. Most people in southern China carry the gene CR1, which protects against malaria. Malaria was once quite common in southern China. In order to survive, the genes of people in the south evolved to fight against this disease. However, people in the south are also more sensitive to certain illnesses, as they lack the genes to stop them.
Genes can also cause physical differences between northerners and southerners. Most northerners have the ABCC11 gene, which causes dry earwax, less body smell and fewer sweats. These physical differences are also more beneficial to living in cold environments. Southerners are less likely to have this gene, as it did not develop in their population.
1.What did the new study focus on?
A.Regions. B.Vegetables.
C.Gene variations. D.Ethnic minority groups.
2.What is the main function of the gene FADS2?
A.It helps store fat. B.It helps digest meat.
C.It helps gain weight. D.It helps treat illness.
3.According to the study, most northerners ______.
A.are immune to malaria B.catch blood-borne illnesses easily
C.have no body smell D.sweat less frequently
4.How many differences did the study find related to genes?
A.Two. B.Three.
C.Four. D.Five.
高三英语阅读理解困难题查看答案及解析
Did you know that there are actually people who have paid for a flight to the moon? In the future, there will be a lot more opportunities to travel to faraway places than now… perhaps even as far as the moon. As people adventure further and further away and as planes, trains, cars, and rocket ships become faster, is it safer to have these vehicles controlled by humans or by computers?
While many flights by plane are controlled automatically by machines, most people today wouldn’t let their car drive itself. That’s because currently the autopilot function on your car can only keep it on the same course you are travelling on. It won’t turn the car right or left. It won’t stop if an animal jumps in the way. However, cars today can sense when something is too close and warn the driver with flashing lights and alarms. Many cars also have GPS（global positioning systems） that tell drivers which road to take and when to turn. These systems, unlike human drivers, never get lost. In the future, it is easy to believe that your car will be better able to drive itself with the aid of computers that can determine the position of your car and the speed it should travel at.
In addition to computers being ‘smarter’ than people regarding the best way to go or knowing how close another vehicle is, computers don’t get sick, tired, or angry. This means they won’t make the same mistakes that people make when they are not having a good day. While responding with emotion is a good thing when choosing the best way to deal with a friend’s personal problem, it may not be such a good thing when deciding what to do at the wheel of a fast-moving vehicle.
So what are the disadvantages of autopilot systems? Maybe one disadvantage is that a small computer problem could cause a serious accident. It could also be argued that in unexpected situations, computers might not be able to respond appropriately; some decisions require human emotions. Another problem might be that if everything were controlled by computers or robots, people wouldn’t have any jobs.
1.What is the best title for the passage?
A. The Development of Autopilot
B. Technology of Future Travel
C. A New Driving System
D. Computerized Cars
2.Which of the following is the disadvantage of an autopilot system?
A. It won’t make the same mistakes as people do.
B. It can point out the best route for the driver.
C. It might not respond properly to unexpected situations.
D. It does not have human emotions to influence its function.
3.If some falling rocks roll down toward your car, the autopilot on your car will_______.
A. inform you of the danger
B. turn the car right or left
C. do nothing about it
D. stop the car
4.What’s the author’s attitude towards the autopilot?
A. Approving. B. Objective. C. Negative. D. Doubtful.
高三英语阅读理解中等难度题查看答案及解析
You must be aware that it’s here _____we found evidence of some of the earliest people who lived in this part of the world.
| A．where | B．that | C．/ | D．what |
高三英语单项填空中等难度题查看答案及解析
You must be aware that it’s here _____we found evidence of some of the earliest people who lived in this part of the world.
A．where B．that C．/ D．what
高三英语单项填空中等难度题查看答案及解析
Not many people know that U.S. President Calvin Coolidge did not always live in the White House. Sometimes he lived in the nearby Willard Hotel.
Once, in the middle of a night, the President awoke to see a thief searching his clothes. Coolidge calmy spoke up from the darkness, “I wish you wouldn’t take that watch.”
“Why?” asked the shocked man.
Coolidged answered, “Take it near the window and read what is engraved on the back of it.”
The man read, “Presented to Calvin Coolidged, Speaker of the House, by the Massachusetts General Court.” He was very surprised!
“Are you President Coolidge?” he asked. He had never thought he would find the president sleeping in a hotel!
“Yes, I am” Coolidge said. Then he asked, “Why are you doing this,Son?”
The young man explained that he and a friend traveled to Washington during their college vacation. They spent all of their money and had no money to pay the hotel bill and the train tickets back to school.
Coolidge added up those fees. It came to $32. That may not sound like much now, but it was a big sum then. “I’ll give you the $32 as a loan,” the President said, “And I expect you to pay me back.”
The youth thanked him. Coolidge left him with this warning: “Son, you are a nice boy, you are better than you are acting. You are starting down the wrong road. Just remember who you are.”
It wasn’t until after the death of Mr.Coolidge that this story was allowed to come out. It was first published in the Los Angeles Times. And the most interesting of all is that the President’s notes show that the young man was indeed better than he was acting. He repaid the $32 loan in full.
1..The president stopped the youth from stealing the watch because________
A. It was his favorite watch.
B. He wanted to give some money to the youth
C. He wanted to help the young man from getting into trouble
D. He used it for work and daily life
2. It can be inferred from the passage that________
A. the youth’s family was in financial difficulty
B. hotel fees were rather expensive at that time
C. the youth never connected with the president again
D. the youth learned a lesson from his experience with the president
3. How did people first get to know the story of the president with the youth?
A. From the president himself
B. From a newspaper
C. From the youth’s notes
D. From the youth himself
4. We can learn from the passage that________
A. possessions can be given up when necessary
B. generosity should be encouraged in some cases
C. people can benefit from their unforgettable experiences
D. an act of kindness may change a person’s life
高三英语阅读理解中等难度题查看答案及解析
People You’ve Never Heard of Who Changed the World
It is a fact that most people live their lives unremarked by history. Whether by design or by accident, there are some pioneers whose achievements changed the course of history but whose names are unknown to us.
James Harrison
James Harrison has saved the lives of over two million people by donating his blood 1,173 times, a Guinness world record. His blood produces a rare antibody (抗体) which cures the otherwise deadly Rhesus disease in unborn children. It has also been used in the development of a medicine anti-D, which will cure the Rhesus disease in children forever.
Lewis Latimer
After helping Alexander Graham Bell obtain his patent for the telephone, Lewis Latimer patented a carbon filament (碳灯丝), which allowed light bulbs to burn for hours before burning out, much more useful than that invented by Thomas Edison. Latimer went on to invent many other useful devices, including a device which cooled and cleaned patients’ rooms in hospitals.
Maurice Hilleman
Not all achievements require bravery and self-sacrifice. Take Maurice Hilleman for example. He found another way to change the world. He developed the mumps vaccine (疫苗) after his daughter got the illness. And he didn’t stop there. In total, he has single-handedly developed over 40 vaccines, including eight commonly given to children. His work has saved millions of lives and prevented serious consequences due to the diseases.
Nils Bohlin
In 1959 Nils Bohlin patented a revolutionary design that has saved millions of lives － the three-point safety belt. After the initial resistance from drivers who hated being told what to do, and even for their own good, the three-point belt has become a standard feature in new cars around the world.
1.Whose patent allowed light bulbs to burn for hours before burning out?
A. Alexander Graham Bell. B. Lewis Latimer.
C. Thomas Edison. D. Nils Bohlin.
2.What’s the similarity between James Harrison and Maurice Hilleman?
A. They both had spirits of bravery and self-sacrifice.
B. Their contributions saved the lives of many children.
C. They devoted themselves to work because of family members.
D. They both set a Guinness world record.
3.What was drivers’ initial attitude to the three-point seat belt?
A. They refused to use it. B. They were satisfied with it.
C. They were surprised at it. D. They got excited about it.
高三英语阅读理解中等难度题查看答案及解析
As you go through this book, you ________ that each of the millions of people who lived through World War II had a different experience.
A. will find B. found
C. had found D. have found
高三英语单项填空中等难度题查看答案及解析
As you go through this book, you ________ that each of the millions of people who lived through World War II had a different experience.
A. will find B. found
C. had found D. have found
高三英语单项填空中等难度题查看答案及解析
As you go through this book, you ________ that each of the millions of people who lived through World War II had a different experience.
A. will find B. found
C. had found D. have found
高三英语单项填空中等难度题查看答案及解析