Cut out part of a healthy person’s liver and transplant it into a sick person--it sounds like a complicated and dangerous operation , not to mention very expensive. But it is sometimes the only possible cure for a seriously ill patient with liver disease.

Until now British scientists have just announced a new stem cell technique, which allows them to grow healthy liver cells outside human bodies. According to the researchers, it could be another five to 10 years before the technique can actually be used to help patients with liver disease. However, they say the method might one day replace liver transplants altogether. The study was led by the University of Cambridge and the Welcome Trust Sanger Institute, a British genomics and genetics research institute. It was published in the journal nature on October 12,2011.

The researchers took skin cells from a patient with a mutation (變異) in a gene called alphal-antitrypsin (a-l抗胰蛋白酶). This gene makes a protein that protects our bodies against inflammation (炎癥). People with changed or damaged alphal-antitrypsin are not able to release the protein correctly from the liver, so the protein is trapped there and eventually leads to liver cirrhosis (肝硬化).

Scientists then used an advanced technique to cut away the faulty section of DNA from a stem cell and replace it with a corrected one, according to the journal. The stem cells went on to produce fresh and healthy liver cells with normal protein levels. Scientists put the new liver cells into mice and found that they worked very well.

Stem cells are the life source of all other cells in the body. They could transform medicine, providing treatment for blindness, spinal cord injuries and other serous injuries. They could also be used to produce new cells for damaged organs.

David Lomas, a Cambridge biology professor who worked on the team, said: “If we can use a patient’s own skins cells to produce liver cells that we can put back into the patient, we may prevent the future need for transplantation. ”

71. what is the best title of this passage?

A. How to transplant liver for patients B. A new way to transplant livers for patients

C. The difficulty in curing liver patients D. New life for liver patients

72. The first paragraph is written to _______.

A. show how difficult it is to cure liver disease

B. tell us what a liver transplant involves　

C. introduce a potential cure for liver disease

D. show how serious liver disease can be

73.Why do some people get liver cirrhosis according to the article?

A. Because their bodies are lacking in alphal-antitrypsin.

B. Because their skin cells are not able to protect against inflammation.

C. Because the alphal-antitrypsin in their bodies is changed or damaged.

D. Because their liver releases too high a level of protein.

74. According to British scientists, liver transplant might ___________.

A. become history sooner or later

B. be replaced by a new stem cell technique in five years

C. be the only possible cure liver disease in the future

D. be prevented in the future

75. What can be inferred from the passage?

A. Stem cells can keep liver cells healthy and fresh.　

B. Equaling medicine, stem cells can cure blindness, spinal cord injuries and other serous injuries

C. Stem cells can replace the damaged organs.

D. All other cells in the body can’t work well without stem cells

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：江西省八所重點(diǎn)高中2012屆高三4月高考模擬聯(lián)考英語(yǔ)試題 題型：050

閱讀下面短文，從題中所給的四個(gè)選項(xiàng)(A、B、C和D)中，選出最佳選項(xiàng)。

　　Cut out part of a healthy person's liver and transplant it into a sick person-it sounds like a complicated and dangerous operation, not to mention very expensive．But it is sometimes the only possible cure for a seriously ill patient with liver disease．

　　Until now British scientists have just announced a new stem cell technique, which allows them to grow healthy liver cells outside human bodies．According to the researchers, it could be another five to 10 years before the technique can actually be used to help patients with liver disease．However, they say the method might one day replace liver transplants altogether．The study was led by the University of Cambridge and the Welcome Trust Sanger Institute, a British genomics and genetics research institute．It was published in the journal nature on October 12, 2011．

　　The researchers took skin cells from a patient with a mutation(變異)in a gene called alphal-antitrypsin(a-l抗胰蛋白酶)．This gene makes a protein that protects our bodies against inflammation(炎癥)．People with changed or damaged alphal-antitrypsin are not able to release the protein correctly from the liver, so the protein is trapped there and eventually leads to liver cirrhosis(肝硬化)．

　　Scientists then used an advanced technique to cut away the faulty section of DNA from a stem cell and replace it with a corrected one, according to the journal．The stem cells went on to produce fresh and healthy liver cells with normal protein levels．Scientists put the new liver cells into mice and found that they worked very well．

　　Stem cells are the life source of all other cells in the body．They could transform medicine, providing treatment for blindness, spinal cord injuries and other serous injuries．They could also be used to produce new cells for damaged organs．

　　David Lomas, a Cambridge biology professor who worked on the team, said： “If we can use a patient's own skins cells to produce liver cells that we can put back into the patient, we may prevent the future need for transplantation．”

(1)

what is the best title of this passage?

[　　]

A．

How to transplant liver for patients

B．

A new way to transplant livers for patients

C．

The difficulty in curing liver patients

D．

New life for liver patients

(2)

The first paragraph is written to ________．

[　　]

A．

show how difficult it is to cure liver disease

B．

tell us what a liver transplant involves

C．

introduce a potential cure for liver disease

D．

show how serious liver disease can be

(3)

Why do some people get liver cirrhosis according to the article?

[　　]

A．

Because their bodies are lacking in alphal-antitrypsin．

B．

Because their skin cells are not able to protect against inflammation．

C．

Because the alphal-antitrypsin in their bodies is changed or damaged．

D．

Because their liver releases too high a level of protein．

(4)

According to British scientists, liver transplant might ________．

[　　]

A．

become history sooner or later

B．

be replaced by a new stem cell technique in five years

C．

be the only possible cure liver disease in the future

D．

be prevented in the future

(5)

What can be inferred from the passage?

[　　]

A．

Stem cells can keep liver cells healthy and fresh．

B．

Equaling medicine, stem cells can cure blindness, spinal cord injuries and other serous injuries

C．

Stem cells can replace the damaged organs．

D．

All other cells in the body can't work well without stem cells

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2011-2012學(xué)年福建省廈門市五顯中學(xué)高一上學(xué)期期中考試英語(yǔ)試卷（帶解析） 題型：閱讀理解

When the lazy days of summer arrive and the schedule is packed with swimming，camp，and family vacations，it can be a challenge to find time for learning. But kids’ reading skills don’t have to grow cold once school’s out. Here are some ways to make reading a natural part of their summer fun.
Explore your library. Visit your local library to check out books and magazines that your kids haven’t seen before. Many libraries have summer reading programs，book clubs，and reading contests for even the youngest borrowers. With a new library card，a child will feel extra grown­up checking out books.
Read on the road. Going on a long car trip？Make sure the back seat is stocked with favorite reads. When you’re not at the wheel，read the books aloud. Get some audiobooks (many libraries have large selections)and listen to them together during driving time.
Make your own books. Pick one of your family’s favorite parts of summer—whether it’s baseball，ice cream，or the pool—and have your child draw pictures of it or cut out pictures from magazines. Stick the pictures onto paper to make a booklet and write text for it. When you’re done，read the book together. Reread it whenever you like!
Keep in touch. Kids don’t have to go away to write about summer vacation. Even if your family stays home，they can send postcards to tell friends and relatives about their adventures. Ask a relative to be your child’s pen pal and encourage them to write each week.
Keep up the reading habits. Even if everything else changes during the summer，keep up the reading routines around your house. Read with your kids every day—whether it’s just before bedtime or under a shady tree on a lazy afternoon. And don’t forget to take a book to the beach！Just　brush　the sand off the pages—it’s no sweat!
【小題1】The purpose of the passage is to________.

A．encourage parents to read
B．give advice on raising kids
C．raise a good summer reader
D．suggest places for vacations
【小題2】If you drive on a long trip in summer，you can ________.
A．visit the local library and join book clubs
B．borrow some audiobooks to listen to
C．keep in touch with friends by sending postcards
D．read your own picture books with your son
【小題3】By saying “Just brush the sand off the pages—it’s no sweat”，the author means ________.
A．taking away the sand on the book is very difficult
B．a(chǎn) special book is needed when you’re reading on the beach
C．one can remove the sand on the book with a brush easily
D．there’s no trouble reading even on the beach
【小題4】Who are the intended readers of the passage?
A．Parents.B．Students.
C．Teachers.D．Editors.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2014屆廣東省陸豐市高二上學(xué)期期末考試英語(yǔ)試卷（解析版） 題型：閱讀理解

We all know the dangers of fires. It’s good and necessary for a family to learn how to prepare for a fire. Here are some suggestions.

Put a smoke alarm(火警) in the house. Smoke from a fire causes the alarm to go off. The alarm makes a loud sound. The sound tells everyone to leave the house at once.

Make escape plans. We should know all the ways out of the house. If there is a fire, everyone follows the plan to get out. Part of the plan is to check all the windows to make sure they can be opened easily.

Buy fire extinguishers(滅火器) in the house. Everyone in the family should know how to use them.

Practise for a fire. We do fire practice because we teach children about fire safety. Everyone in the family should know the following fire rules:

★Don’t open a hot door! The fire can grow more quickly if you open the door.

★Stay close to the floor! Smoke can be more dangerous than fire. The best air is near the floor because smoke rises.

★What will you do if your hair or clothes start to burn? First, stop! Don’t run! The fire burns faster because of more air. Drop! Fall to the floor. Then roll! Turning over and over will make the fire go out. Put a blanket(毯子) around you to keep air away from the fire that may still be on you.

There are many possible causes for fires. A wise family is ready all the time. If there is a fire, don’t forget to call 119 for help.

1.When a smoke alarm rings at home, it means _________.

A．you have to get up                      B．water is running to the floor

C．something is burning                     D．someone breaks your window

2.The writer advises us to do the following to prepare for a fire except that _____.

A．we practise for a fire                     B．we make escape plans

C．we buy fire extinguishers                 D．we use electrical cookers

3.When a fire happens,____ if you open the hot door.

A．the door will soon be on fire               B．the electricity will be cut off

C．the fire will grow more quickly             D．the house will fall down

4.What are the right steps you should take when your hair or clothes catch fire?

A．Stop, run, roll.                          B．Stop, drop, roll.

C．Run, drop, roll.                         D．Roll, drop, stop.

5.What is the best title for this passage?

A．Be Ready for a Fire.                      B．The Causes of a Fire.

C．Learn to Use a Fire Extinguisher.            D．The Dangers of a Fire.

 

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：模擬題 題型：閱讀理解

閱讀理解
     Cut out part of a healthy person's liver and transplant it into a sick person--it sounds like a
complicated and dangerous operation , not to mention very expensive. But it is sometimes the
only possible cure for a seriously ill patient with liver disease.
     Until now British scientists have just announced a new stem cell technique, which allows them
to grow healthy liver cells outside human bodies. According to the researchers, it could be another
five to 10 years before the technique can actually be used to help patients with liver disease.
However, they say the method might one day replace liver transplants altogether. The study was
led by the University of Cambridge and the Welcome Trust Sanger Institute, a British genomics
and genetics research institute. It was published in the journal nature on October 12,2011.
     The researchers took skin cells from a patient with a mutation (變異) in a gene called
alphal-antitrypsin (a-l抗胰蛋白酶). This gene makes a protein that protects our bodies against
inflammation (炎癥). People with changed or damaged alphal-antitrypsin are not able to release
the protein correctly from the liver, so the protein is trapped there and eventually leads to liver
cirrhosis (肝硬化).
     Scientists then used an advanced technique to cut away the faulty section of DNA from a stem
cell and replace it with a corrected one, according to the journal. The stem cells went on to produce
fresh and healthy liver cells with normal protein levels. Scientists put the new liver cells into mice
and found that they worked very well.
     Stem cells are the life source of all other cells in the body. They could transform medicine,
providing treatment for blindness, spinal cord injuries and other serous injuries. They could also be
used to produce new cells for damaged organs.
     David Lomas, a Cambridge biology professor who worked on the team, said: "If we can use a
patient's own skins cells to produce liver cells that we can put back into the patient, we may prevent
the future need for transplantation. "

1. what is the best title of this passage?

A. How to transplant liver for patients
B. A new way to transplant livers for patients  
C. The difficulty in curing liver patients
D. New life for liver patients

2. The first paragraph is written to _______.

A. show how difficult it is to cure liver disease  
B. tell us what a liver transplant involves    
C. introduce a potential cure for liver disease
D. show how serious liver disease can be

3.Why do some people get liver cirrhosis according to the article?

A. Because their bodies are lacking in alphal-antitrypsin.
B. Because their skin cells are not able to protect against inflammation.
C. Because the alphal-antitrypsin in their bodies is changed or damaged.
D. Because their liver releases too high a level of protein.

4. According to British scientists, liver transplant might ___________.

A. become history sooner or later
B. be replaced by a new stem cell technique in five years
C. be the only possible cure liver disease in the future
D. be prevented in the future

5. What can be inferred from the passage?

A. Stem cells can keep liver cells healthy and fresh.    
B. Equaling medicine, stem cells can cure blindness, spinal cord injuries and other serous injuries
C. Stem cells can replace the damaged organs.
D. All other cells in the body can't work well without stem cells

查看答案和解析>>

同步練習(xí)冊(cè)答案