Gene therapy (基因治疗) is a revolutionary new technique for treating people with health problems. Up until very recently, the most commonly available methods for treating patients were either through drugs or operations. Gene therapy provides a third option for treatment by transforming or replacing cells with new genetic materials and instructions. Scientists can be very precise in the kinds of changes they make in patients.
Gene therapy works by using a delivery system, such as a virus, to enter a patient's body. Once inside the body, the virus combines with a host cell and delivers the new DNA. The proteins then begin to repair the affected cells. New techniques have focused on removing cells from the patients and transforming them outside the body before reintroducing them to the patients.
The two types of gene therapy are called somatic and germline. Somatic therapy refers to changing or replacing a body cell. In this case, the treatment is restricted to the patient only. This will not affect the patient's future children because the patient's germ (生殖) cells are unaffected. In germline therapy, the patient germ cells are treated, which may affect the patient's future generation.This is highly controversial (有争议的) because it is not clear exactly how this might affect them and further generations. For this reason, many countries have passed laws that prohibit this kind of treatment.
Despite the promise of gene therapy, there are still many barriers that need to be overcome before it comes into widespread use. One of the issues is that the use of viruses to deliver DNA may actually cause unexpected problems in patients if the virus grows and attacks the body. Another problem is the nature of many diseases is very complex and spread throughout multiple genes. The use of gene therapy to change a single gene in the body would probably not be sufficient as a cure. Finally, the costs of gene therapy are high. Some gene therapy procedures may cost over$1 million to undertake and require specialized doctors and equipment.
1.What does the underlined word ''them'' in paragraph 2 refer to?
A.Techniques. B.Cells. C.Patients. D.Proteins.
2.What can we learn about gene therapy?
A.Gene therapy has been put into practice widely.
B.The cells of patients are developed in healthy people.
C.Viruses entering the body can mix with host cells and form new DNA.
D.Both somatic and germline therapy have side effects on later generations.
3.What's the last paragraph mainly about?
A.The disadvantages of gene therapy.
B.The promising future of gene therapy.
C.The high costs of treatment procedures.
D.The issues related to viruses and complex genes.
4.What can be a suitable title for the text?
A.Why Gene Therapy Procedures Are Extremely Expensive
B.Gene Therapy: A Dangerous New After-operation Treatment
C.Gene Therapy: A Contemporary Progressive Treating Method
D.Scientists Are Accurate in Performing the Categories of Surgery
高三英语阅读理解困难题
Gene therapy (基因治疗) is a revolutionary new technique for treating people with health problems. Up until very recently, the most commonly available methods for treating patients were either through drugs or operations. Gene therapy provides a third option for treatment by transforming or replacing cells with new genetic materials and instructions. Scientists can be very precise in the kinds of changes they make in patients.
Gene therapy works by using a delivery system, such as a virus, to enter a patient's body. Once inside the body, the virus combines with a host cell and delivers the new DNA. The proteins then begin to repair the affected cells. New techniques have focused on removing cells from the patients and transforming them outside the body before reintroducing them to the patients.
The two types of gene therapy are called somatic and germline. Somatic therapy refers to changing or replacing a body cell. In this case, the treatment is restricted to the patient only. This will not affect the patient's future children because the patient's germ (生殖) cells are unaffected. In germline therapy, the patient germ cells are treated, which may affect the patient's future generation.This is highly controversial (有争议的) because it is not clear exactly how this might affect them and further generations. For this reason, many countries have passed laws that prohibit this kind of treatment.
Despite the promise of gene therapy, there are still many barriers that need to be overcome before it comes into widespread use. One of the issues is that the use of viruses to deliver DNA may actually cause unexpected problems in patients if the virus grows and attacks the body. Another problem is the nature of many diseases is very complex and spread throughout multiple genes. The use of gene therapy to change a single gene in the body would probably not be sufficient as a cure. Finally, the costs of gene therapy are high. Some gene therapy procedures may cost over$1 million to undertake and require specialized doctors and equipment.
1.What does the underlined word ''them'' in paragraph 2 refer to?
A.Techniques. B.Cells. C.Patients. D.Proteins.
2.What can we learn about gene therapy?
A.Gene therapy has been put into practice widely.
B.The cells of patients are developed in healthy people.
C.Viruses entering the body can mix with host cells and form new DNA.
D.Both somatic and germline therapy have side effects on later generations.
3.What's the last paragraph mainly about?
A.The disadvantages of gene therapy.
B.The promising future of gene therapy.
C.The high costs of treatment procedures.
D.The issues related to viruses and complex genes.
4.What can be a suitable title for the text?
A.Why Gene Therapy Procedures Are Extremely Expensive
B.Gene Therapy: A Dangerous New After-operation Treatment
C.Gene Therapy: A Contemporary Progressive Treating Method
D.Scientists Are Accurate in Performing the Categories of Surgery
高三英语阅读理解困难题查看答案及解析
I read a newspaper article about a new concept. The idea is simple, but revolutionary(革命性的): combining a residential home for the elderly with a nursery school in the same building. The children and the residents(住户)eat lunch together and share activities such as music, painting and gardening. In the afternoons, the residents enjoy reading stories to the children and, if a child is feeling sad or tired, there is always a kind lap to sit on and a hug.
Nowadays there is less and less contact between the old and the young. There are many reasons for this, including the breakdown of the extended family, working parents with no time to care for ageing relations, and smaller flats with no room for grandparents. But the result is the same: increasing numbers of children without grandparents and old people who have no contact with children. It’s a major problem in many societies.
That’s why inter-generational(代际的) programs are growing in popularity all over the world. There are examples of successful actions all over the world. Using young people to teach IT skills to older people is one obvious example. Using old people as volunteer assistants in schools is another. One successful scheme in London pairs young volunteers with old people who are losing their sight. The young people help with practical things such as writing letters, reading bank statements and helping with shopping, and the older people can pass on their knowledge and experience to their young visitors. For example, a retired judge may be paired with a teenager who wants to study law.
But it isn’t only the individuals concerned who gain from inter-generational activities. The advantages to society are huge too. If older people can understand and accept the youth of today, there will be less conflict in a community. And we can use the strengths of one generation to help another. Then perhaps getting old won’t be so sad after all.
1.Why does the author mention the newspaper article he read?
A. To argue for a new concept. B. To show his interest in the topic.
C. To introduce the topic of the text. D. To draw our attention to a social problem.
2.What is the purpose of the inter-generational programs?
A. To provide a good job opportunity for the young.
B. To bring the old and the young together.
C. To teach the young to respect the old.
D. To ask the old to care for the young.
3.What is Paragraph 3 mainly about?
A. The reasons why inter-generational programs enjoy popularity in the world.
B. The inter-generational programs’ benefits to individuals.
C. The inter-generational programs all over the world.
D. The examples of inter-generational activities.
4.What may be the best title for the text?
A. Building bridges for the old and the young.
B. A new concept in caring for the old is born.
C. Offering a warm home for the young.
D. Being old is no more sad.
高三英语阅读理解中等难度题查看答案及解析
Nia fitness class
A unique combination of yoga, dance and martial arts techniques, Nia is a new form of fitness designed for people of all fitness levels to open up their body and relax.
When: Every Wednesday 5-6 pm
Cost: 100 yuan for one class, 500 yuan for six
Contact: 135-2299-3724
Where: D-1F Jinxiuyuan Apartment, Xing Fu Cun Zhong Lu, Chaoyang District
The Red Detachment of Women
Part of the closing ceremony for the 11th “Meet in Beijing” Arts Festival, the China National Ballet will be performing The Red Detachment of Women, one of the most successful full-length Chinese ballets.
When: May 25, 7:30 pm
Cost: 80-1,080 yuan
Contact: 6417-7845, ponypiaoen@hotmail.com
Where: Poly Plaza, 14 Dongzhimen Nandajie, Dongcheng District
Student rock
College bands Las Vegas, Strange July, Wet Sand, Poshangcun and Ganrao Diantai will take the stage at D-22 to show some of the best talent.
With many of Beijing’s best underground bands getting their start at D-22, it’s a place to experience new sounds, faces and performances inspired by the city’s youngest talent.
When: May 27, 8:30 pm
Cost: 20 yuan
Contact: 6265-3177
Where: D-22, 242 Chengfu Lu, Haidian District
Speed dating “on wheels”
The speed dating industry is not new in China. All speed dating is the same: small tables, pleasant environment, nervous people.
Speed dating “on wheels” is a new form of speed dating. The details: Chinese rickshaws (人力车) will drive you around the romantic places at Houhai Lake, stopping to make a change.
This traditional atmosphere will bring more romance to the old, boring speed dating.
When: June 5, 2-4 pm
Cost: 150 yuan (rickshaws and bar included)
Where: Houhai Lake
1.If a couple want to attend two Nia fitness classes, they need to pay _____.
A. 100 yuan B. 200 yuan C. 300 yuan D. 400 yuan
2.Which of the following activities can you attend if you are available on the evening of May 27?
A. Student rock. B. The Red Detachment of Women.
C. Nia fitness class. D. Speed dating “on wheels”.
3.Which of the following about the speed dating “on wheels” is TRUE?
A. It is not new in China. B. It lasts a whole day on June 5.
C. It is suitable for nervous people and old people. D. It will not cost people extra money to take rickshaws.
4.If you want to enjoy the ballet performance, you should go to _____.
A. D-1F Jinxiuyuan Apartment B. Houhai Lake
C. Poly Plaza D. D-22
高三英语阅读理解中等难度题查看答案及解析
(2017·天津) The hospital has recently obtained new medical equipment, ________ more patients to be treated.
A. being allowed B. allowing
C. having allowed D. allowed
高三英语单项填空困难题查看答案及解析
MOOCs, short for “massive open online courses,” mark an important, possibly revolutionary, development in education. These courses are on line, free of charge, and open to anyone in the world who has a laptop and an Internet connection. Moreover, they are mainly offered by great universities like Stanford, Berkeley, Harvard and Columbia.
The courses are arranged according to how difficult they are, enabling students to progress from beginners to the advanced. The courses cover not only a broad range of science subjects such as math and computer science, but also courses in social sciences and humanities. Though MOOCs are not offered for credit and degree, many students enroll(加入) in the courses for real skills or knowledge which they can put to some practical use.
The format(形式) seems better than the traditional school class. The average quality of the lecturers is much higher. Besides, students can learn back and forward－that is, they can go at their own learning speed, which they can’t do in a live lecture. And, more importantly, they don’t have to travel anywhere to attend an online lecture. There is a problem of asking questions of the lecturer in a class of ten thousand students, but some MOOCs have solved it by allowing students to post questions on line for a vote, and only the most popular questions are put to the lecturer.
In a knowledge age, lifelong learning is not confined to a traditional classroom. Students taking MOOCS are usually very clever, have work experience, and in many cases, have already developed a set of practical skills. Moreover, they also offer unique international perspectives(远景) that would be the envy of any school classroom.
1.Which of the following statements is NOT true about MOOCs?
A. The word “MOOCs” is short for “ massive open online campuses”.
B. Anyone who has a computer and an Internet connection can take MOOCs.
C. MOOCs are usually offered by first-class universities in the world.
D. MOOCs may be a breakthrough in the development of education.
2.MOOCs seem to have an advantage over traditional school classes in that ________.
A. there is a problem of asking questions in traditional classes
B. students enrolling in MOOCs can get credit and degree easily
C. students can learn at their own study pace
D. students can travel to many places when taking MOOCs
3.The meaning of the underlined word “confined” means ________.
A. extended B. developed
C. limited D. advanced
高三英语阅读理解中等难度题查看答案及解析
MOOCs, an acronym(缩写)for “massive open online courses,” mark an important, possibly revolutionary, development in education. These courses are online, free of charge, and open to anyone in the world who has a laptop and an Internet connection. Moreover, they are mainly offered by elite universities like Standford, Berkeley, Harvard and Columbia.
The courses, like normal college courses, are sequenced(按顺序排好)by difficulty, enabling students to progress from beginners to the advanced. The courses cover not only a broad range of technical subjects such as math and computer science, but also courses in the social sciences and the humanities (人文学科).
Though MOOCs are not offered for credit and degree, many students enroll in the courses for real skills or knowledge which they can put to some practical use. Some students even form online study groups, or in-person groups with students who live nearby.
The format seems superior to the traditional school class. The average quality of the lecturer is much higher, because students do not have to stick with a mediocre(平庸的) lecturer.
Besides, students can scroll back or forward—in short, they can go at their own learning speed, which they cannot do in a live lecture. And, of great importance, they do not have to travel anywhere to attend an online lecture. One can obtain a first-class American college education wherever he or she lives and however little money he or she has.
There is a problem of asking questions of the lecturer in a class of ten thousand students, but some MOOCs have solved it by allowing students to post questions online for a vote, and only the most popular questions are put to the lecturer.
In a knowledge era, lifelong learning is not confined to a traditional classroom. Of course, students enrolling in MOOCs cannot be compared with those who are in traditional universities, but we need to rethink what a “students” is.
Students in MOOCs are very clever, have work experience, and in many cases, have already developed a set of core competences. Moreover, they also offer unique international perspectives that would be the envy of any school classroom.
1.Which of the following statements is NOT true about MOOCs?
A. The word “MOOCs” is an acronym for “Massive open online campuses.”
B. Anyone who has a computer and an Internet connection can take MOOCs.
C. MOOCs are usually offered by first-class universities in the world..
D. MOOCs may be a breakthrough in the development of education.
2.Students enroll in MOOCs mainly for ________.
A. credits B. degrees C. skills D. study groups
3.MOOCs seem to have an advantage over traditional school classes because________.
①the average quality of the lecturer is higher
②students can travel to many places when taking MOOCs
③students can learn at their own study pace
④there is a problem of asking questions in traditional classes
A. ①② B. ②③ C. ①③ D. ②④
4.Which word is the best to describe students enrolling in MOOCs?
A. Mediocre B. Creative
C. Practical D. Competent
5.Which of the following words does not have the same meaning as the underlined word “perspectives”in the last Paragraph?
A. Vision B. View
C. Outlook D. Scenery
高三英语阅读理解中等难度题查看答案及解析
Weekend Photography Workshop(研讨班): Seattle Aims
Learn new techniques from a great photographer
Take photos of Pike Place Market, Bainbridge Island, and more
Activity Details
Seattle is a fantastic place to photograph. Spend the weekend taking photos of the historic Pike Place Market, get a new angle on the Space Needle, and photograph harbor views on Bainbridge Island.
This workshop is led by a great photographer and a professional instructor and is designed for people who are interested in improving their digital photography. All participants must bring a digital SLR camera(单反相机), a laptop, and the software for organizing and presenting images. The workshop is limited to 25 participants.
Plan – 3 Days
Day 1—Thursday: Seattle
Settle into our hotel or stay in accommodations of your choice. Gather tonight at a restaurant in town for a welcome dinner.
Day 2—Friday: Pike Place Market & Pioneer Square
Start the day in the classroom with an instructive talk by our photographer. Our first task this afternoon takes us to the oldest running farmers’ market in the country, Pike Place Market. Work on portraits, street scenes, and food photographing. Then photograph the stately 19th century brick buildings of Pioneer Square, Seattle’s historic center. End the day with an edit-and-critic meeting.
Day 3—Saturday: Olympic Sculpture Park & Space Needle
Head out to the Olympic Sculpture Park. Then go to the streets of the downtown area to get a unique view of the Space Needle, and photograph city life against a background of diverse architectural styles. Tonight, we’ll present our best images to the group, enjoy dinner at a local restaurant and end our journey.
Cost
| With hotel | Without hotel |
| $2,020 | $1,395 |
Meals noted in the plan are included in both options(with and without hotel)
Dates
Jul 11 – 14, 2013 Aug 08—11, 2013 Sep 26 – 29, 2013
Contact Information
For questions about this workshop, please call 1-886-797-4686. Or you can visit the website: http://www. nationalgeographicexpeditions.com.
1.The purpose in joining the workshop is to _____.
A. make friends with those who are good at photographing
B. learn new techniques and photograph tourist attractions in Seattle
C. have a romantic and meaningful weekend
D. pay a short visit to Seattle
2.What should you bring with you during the workshop?
A. A digital SLR camera, a laptop and the software that can organize and present images.
B. A digital camera and a computer that can organize and present images.
C. A digital camera and a guide to photography.
D. A digital SLR camera and a guide to photography.
3.You will do the following on Friday EXCEPT______.
A. photographing diverse architectural styles in Seattle
B. communicating photography techniques with others
C. photographing Seattle’s historic center --- Pioneer Square
D. visiting the oldest running farmers’ market in the country
4.What can you learn from the passage?
A. The workshop is led by a teacher who is interested in photography.
B. You need to pay for the meals mentioned in the plan.
C. You have three chances to join the workshop.
D. Only 20 people can participate in the workshop.
5. If you are willing to join the workshop, you can______.
A. go to Seattle directly
B. contact the photographer
C. call a travel agency in Seattle
D. call 1-866-797-4686 for more details
高三英语阅读理解中等难度题查看答案及解析
A lot of revolutionaries _____ their own lives for the liberation of our country.
| A．devoted | B．sacrificed | C．contributed | D．delivered |
高三英语单项填空中等难度题查看答案及解析
Tiny microbes (微生物) are at the heart of a new agricultural technique to manage harmful greenhouse gas. Scientists have discovered how microbes can be used to turn carbon dioxide into soil-enriching limestone (石灰石), with the help of a type of tree that grows in tropical areas, such as West Africa.
Researchers have found that when the Iroko tree is grown in dry, acidic soil and treated with a combination of natural fungi (霉菌) and other bacteria, not only does the tree grow well, it also produces the mineral limestone in the soil around its root.
The Iroko tree makes a mineral by combining Ca from the earth with CO2 from the atmosphere. The bacteria then create the conditions under which this mineral turns into limestone. The discovery offers a new way to lock carbon into the soil, keeping it out of the atmosphere. In addition to storing carbon in the trees' leaves and in the form of limestone, the mineral in the soil makes it more suitable for agriculture.
The discovery could lead to reforestation projects in tropical countries, and help reduce carbon dioxide in the atmosphere in the developing world. It has already been used in West Africa and is being tested in Bolivia, Haiti and India.
The findings were made in a three-year project involving researchers from the Universities of Edinburgh, Granada, Lausanne and Delft University of Technology. The project examined several microbiological methods of locking CO2 as limestone, and the Iroko-bacteria way showed best results. Work was funded by the European Commission under the Future&Emerging Technologies(FET)scheme.
Dr Bryne Ngwenya of the University of Edinburgh's School of GeoSciences, who led the research, said："By taking advantage of this natural limestone-producing process, we have a low-tech, safe, readily employed and easily operating way to lock carbon out of the atmosphere, while improving farming conditions in tropical countries."
1.The passage is mainly introducing ______ .
A.some useful natural fungi and bacteria
B.the soil-enriching limestone created by scientists
C.a newly-found tree in West Africa
D.a new way to deal with greenhouse gas
2.Which of the following is True about tiny microbes?
A.Tiny microbes get along well with the Iroko tree in special soil.
B.CO2 can be broken down by natural fungi and bacteria.
C.The more greenhouse gas is, the more active tiny microbes become.
D.Most tiny microbes like living in dry, acidic soil.
3.What does the underlined word "it" in paragraph 3 probably refer to?
A.Carbon dioxide. B.Soil.
C.Carbon. D.Limestone.
4.According to the passage, what can we infer?
A.The action of the tiny microbes can increase the oxygen in the earth.
B.Researchers tend to use natural power to solve their problem.
C.Researchers have done the experiment on trees in Africa for three years.
D.West Africa is one of the most polluted areas all over the world.
高三英语阅读理解中等难度题查看答案及解析
Tiny microbes(微生物) are at the heart of a new agricultural technique to manage harmful greenhouse gas. Scientists have discovered how microbes can be used to turn carbon dioxide into soil-enriching limestone(石灰石), with the help of a type of tree that grows in tropical areas, such as West Africa.
Researchers have found that when the Iroko tree is grown in dry, acidic soil and treated with a combination of natural fungi(霉菌) and other bacteria, not only does the tree grow well, it also produces the mineral limestone in the soil around its root.
The Iroko tree makes a mineral by combining Ca from the earth with CO2 from the atmosphere. The bacteria then create the conditions under which this mineral turns into limestone. The discovery offers a new way to lock carbon into the soil, keeping it out of the atmosphere. In addition to storing carbon in the trees’ leaves and in the form of limestone, the mineral in the soil makes it more suitable for agriculture.
The discovery could lead to reforestation(重新造林) projects in tropical countries, and help reduce carbon dioxide in the atmosphere in the developing world. It has already been used in West Africa and is being tested in Bolivia, Haiti and India.
The findings were made in a three-year project involving researchers from the Universities of Edinburgh, Granada, Lausanne and Delft University of Technology. The project examined several microbiological methods of locking CO2 as limestone, and the Iroko-bacteria way showed best results. Work was funded by the European Commission under the Future&Emerging Technologies(FET) scheme.
Dr Bryne Ngwenya of the University of Edinburgh’s School of GeoSciences, who led the research, said:“By taking advantage of this natural limestone-producing process, we have a low-tech, safe, readily employed and easily operating way to lock carbon out of the atmosphere, while improving farming conditions in tropical countries.”
1.The passage is mainly introducing .
A. some useful natural fungi and bacteria
B. a new way to deal with greenhouse gas
C. a newly-found tree in West Africa
D. the soil-enriching limestone created by scientists
2.Which of the following is True about tiny microbes?
A. Most tiny microbes like living in dry, acidic soil.
B. CO2 can be broken down by natural fungi and bacteria.
C. The more greenhouse gas is, the more active tiny microbes become.
D. Tiny microbes get along well with the Iroko tree in special soil.
3.What does the underlined word “it” in paragraph 3 probably refer to?
A. Carbon dioxide.
B. Carbon.
C. Soil.
D. Limestone.
4.According to the passage, what can we infer?
A. The action of the tiny microbes can increase the oxygen in the earth.
B. Researchers have done the experiment on trees in Africa for three years.
C. Researchers tend to use natural power to solve their problem.
D. West Africa is one of the most polluted areas all over the world.
5.According to the passage, the Iroko-bacteria method .
A. can be used to improve the farming land
B. can save a lot of seriously destroyed woods
C. has been popularized in Bolivia, Haiti and India
D. should be spread all around the world in the future
高三英语阅读理解困难题查看答案及解析