Researchers in China and the United States have developed a new cataract(白内障)treatment with cells that has restored vision in babies in a trial and may eventually be used in adults.
The treatment- by doctors and staff members at the University of California, San Diego School of Medicine and Sichuan and Sun Yat-sen universities in China-was published in March 9 edition of the scientific journal Nature.
A cataract is a clouding of the normally clear lens(晶体)of an eye. Typical cataract operation involves the removal of the cloudy lens and the insertion of an artificial one. The new operation has been tested in animals and during a small, human trial. It resulted in fewer complications(并发症)than the current harmful operation, and in regrown lenses with superior visual function in all 12 of the baby cataract patients who received the procedure.
A congenital cataract- lens clouding that occurs at birth or shortly after- is important cause of blindness in children. In the new research, Kand Zhang, head of ophthalmic genetics at US San Diego’s Shiley Eye Institute, and his colleagues relied on the regrown potential of endogenous(同源的)stem cells.
According to Zhang, endogenous stem cells are different from other stem cells that are typically grown in a laboratory, transplanted into a patient, and can have risks of immune（免疫的）rejection, infection or cancers. Zhang told CBS News, “We invented a new operation to make a very small opening at the side of a cataractous lens bag, remove the cataract inside, allow the opening to heal, and promote potential lens stem cells to regrow an entirely new lens with vision.”
The human trial involved 12 babies under the age of 2 who were treated with the new method, while 25 babies received thee standard operation care.. The latter group experienced a higher incidence of pos- operation danger, early- onset eye high blood pressure and increased lens clouding. The scientists reported fewer complications and faster healing among the 12 babies who has the new procedure.
1.What is the text mainly about?
A. The concept of the cataract
B. A new cataract treatment with stem cells
C. Bad effects of post-operation in the cataract
D. The reasons why the cataract comes into being
2.Which of the following best describe the new cataract treatment according to the passage?
A. Convenient B. Comfortable
C. Cheap D. Safe
3.What can we learn about the new cataract treatment?
A. It has more risks
B. It may be used widely
C. It has been put into practice widely
D. It can only restore vision in babies
4.What does the underlined word “congenital” in the fourth paragraph mean?
A. Born B. Strange
C. Serious D. Dangerous.
科目：高中英语 来源：河北省唐山市2016-2017学年高二下学期期中考试英语试卷 题型：阅读理解
I Am A Pencil
Children’s book author Sam Swope took a job teaching writing to third-graders in the New York City. His students were immigrants or the children of immigrants from 21 countries, speaking 11 languages and having many different beliefs. But there were a few things they had in common: family troubles, money struggles and poetry.
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What It Takes To Help Me Out
An editor for US News & World Report, David L. Marcus takes us inside a boarding (寄宿) school for troubled teens. He shows the great stresses that are put on these teens and make them lose their confidence. This should cause us to think hard about troubled teens.
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The Most Scenic Drives in America
Published again and again and translated into several languages beginning in 1997, this travel book includes over 200 brand-new photographs of the wonderful places along 120 selected routes.
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Our Brother’s Keeper
Author Jedwin Smith tells what happened when he met several of his brother’s old friends. They make a journey to Vietnam, to visit the place where Jeff, his brother, died. Surprisingly, their Vietnamese guide was the former commander (海军中校) carrying out the attack that killed Jeff. A 
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1.Which of the following books offers the biggest price cut?
A. I Am A Pencil B. What It Takes To Help Me Out
C. The Most Scenic Drives in America D. Our Brother’s Keeper
2.If you are interested in pictures, you would probably choose ________.
A. Our Brother’s Keeper B. What It Takes To Help Me Out
C. The Most Scenic Drives in America D. I Am A Pencil
3.From the book I Am A Pencil, we can learn that Sam Swope’s students _______.
A. are homeless children B. have the same beliefs
C. like writing poetry D. are in different grades
4.What can we learn from the passage?
A. I Am A Pencil is written by Jedwin Smith.
B. What It Takes To Help Me Out is about troubled teens.
C. You have to pay $47.88 for The Most Scenic Drives in America.
D. Jedwin Smith was killed in Vietnam.
5.What type of writing is this passage?
A. An advertisement. B. A news report.
C. An announcement. D. A tour guide.
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A man posted a picture of injuries to his face when he _______ some steps.
A. tripped over B. tripped out
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1.Our water is running _______, so I have to fetch some.
2.I had no alternative but ________ (obey) the rules.
3.The boy was in a situation _________ he might lose his life.
4.Motorists could take a bus into the city center and arrive at work or the shops relaxed and ______ a good mood.
5.There are tow subway lines in Shenyang and several more lines are _______ construction at present.
6.____________ (involve) in the attempted murder, Jack was sentenced 12 years in prison.
7.The kind of bus _____________ (power) by low-carbon fuel which has been invented by some college students.
8.The note __________ (attach) to the shoe-box is neatly folded shaped like a heart.
9.I am all __________ favour of equal pay for equal work.
10.It’s illegal to carry ______________ （threat）weapons.
11.Hit by a sudden stone on the head, he became ___________ （无意识的）
12.Los Angeles was built with the motor car ________ mi
nd and is famous for its six-lane highways.
13.We haven't found the__________ (solve) yet, but I'm sure we're on the right track. We haven't found the solution yet, but I'm sure we're on the right track.
14.If you have no educational background, you will ___________(无疑地)be looked down upon by some others.
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近年来，微信(Wechat)成为了人们非常喜欢的通信工具，但是也给人们带来一些困扰。请对这一现象谈一下自己的看法，内容包括1.使用微信的利与弊；2.自己的看法和建议。
注意：1.词数100左右；
2. 为使行文连贯可适当增加细节。
In recent years, Wechat is becoming increasingly popular. _________________________________________
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
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假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下短文。短文中共有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在此符号下面写出该加的词。
删除：把多余的词用斜线（＼）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1.每处错误及其修改均仅限一词；
2.只允许修改10处，多者（从第11处起）不计分。
Yesterday a schoolboy is daydreaming in class.Not knowing that he was doing,he put a pen cap into his mouth. A few minutes late,he was terrified to find that he had swallowed it!The teacher was shocking when the boy stood up and said,"I've just swallowed a pen cap."He was quickly sent the nearest hospitals.There a doctor examined him but said the best treatment was to take some medicine so that the pen cap could pass natural.Three hours later, the boy successfully made it."She is really lucky,"said the doctor,"It's very not rare that small children put things into their mouths for a fun.It's very dangerous."
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科目：高中英语 来源：宁夏2016-2017学年高一下学期期末考试英语试卷 题型：阅读理解
Last week my youngest son and I visited my father at his new home in Tucson,Arizona.He moved there a few years ago,and I was eager to see his new place and meet his friends.
My earliest memories of my father are of a tall,handsome,successful man devoted to his work and family but uncomfortable with his children.As a child I loved him,as a school girl and young adult I feared him and felt bitter about him.He seemed unhappy with me unless I got straight A's and unhappy with my boyfriends if their fathers were not as "successful" as he was.Whenever I went out with him on weekends,I used to struggle to think up things to say,feeling on guard.
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The next day my dad pulled out his childhood pictures and told me quite a few stories about his own childhood. Although our times together became easier over the years,I never felt closer to him at that moment.After so many years,I'm at last seeing another side of my father.And in so doing,I'm delighted with my new friend.My dad,in his new home in Arizona,is back to me from where he is.
1.Why did the author feel bitter about her father as a young adult?
A. He was silent most of the time. B. He was too proud of himself.
C. He did not love his children. D. He expected too much of her.
2.When the author went out with her father on weekends,she would feel_______ .
A. nervous B. sorry
C. tired D. safe
3.What does the author think of her father after her visit to Tucson?
A. More critical. B. More unhappy.
C. Gentle and friendly. D. Strict and hard-working.
4.The underlined words "my new friend" in the last paragraph refer to_______ .
A. the author' son B. the friend of the author' father
C. the author's father D. the cafe owner
5.The best title of this passage probably is_______ .
A. Our good times B. My father is back to me
C. My childhood D. My earliest memories
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The best moment for the football star was ________ he scored the winning goal.
A. where B. when
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When you finish reading this book, you will have_______ better understanding of_______ life.
A. a; the B. the ; a
C. /; the D. a ; /
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