题目内容

【题目】根据短文理解,选择正确答案。
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.

【答案】
(1)B
(2)D
(3)B
(4)A
【解析】本文介绍用干细胞治疗白内障的新方法。

⑴B主旨大意题。根据第一段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.用干细胞治疗白内障的新方法。故选B。

⑵D推理判断题。根据最后一段中The human trial involved 12 babies under the age of 2 who were treated with the new method,while 25 babies received the standard operation care. The scientists reported fewer complications and faster healing among the 12 babies who had the new procedure.可知新的治疗方法更安全。故选D。

⑶B推理判断题。根据第一段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.可知这种新的治疗白内障的方法可能被广泛地应用。根据句意可知选B。

⑷A词义猜测题。根据第四段中lens clouding that occurs at birth or shortly after—is a significant cause of blindness in children可知婴儿一出生就有白内障,所以划线词的意思应该是“天生的”,A项正确。

练习册系列答案
相关题目

【题目】阅读下面短文,从短文后面各题所给的四个选项(A、B、C和D中,选出可以填入空白处的最佳选项。
On Sunday I had my own Father's Day celebration. Suddenly I 1 about my dad a lot. My dad is 2 the kindest man in the world. He would never 3 anyone in trouble.
Every Thursday night, my dad would 4 Shreveport, to a church there. I always drove the car for him.
Although this happened many times, I 5 one incident on one of those trips to Shreveport. That time on the 6 , my dad saw a hitchhiker (搭便车的人 ). Dad asked me to pull the car over and offer him a 7. Dad asked him his name and address, told him ours, and talked to him about all sorts of things.
At first the hitchhiker was hesitant (迟疑的 ), but he changed his 8 as he could tell we were really listening to him. I did know that it was quite 9 outside and the hitchhiker was very happy to be able to get a lift in our warm car.
We 10 another forty-five minutes and learned that the hitchhiker was 11 many difficulties in life. Dad told him to keep his head up and said that 12 would become better for him soon. He 13 into his pocket and handed the hitchhiker a twenty-dollar bill, leaving only a ten-dollar bill for himself. The hitchhiker then became very 14 .
I was always told never to 15 a hitchhiker and yet my dad did it every time he saw one. Dad always gave them money 16 he did not have much of his own.
From that I've learned a lot about my dad and 17 . I've learned that if you come from a place with 18 , you will show a lot of kindness to people who are 19 . Just one single kind act may 20 someone's life.
(1)A.worried B.thought C.talked D.learned
(2)A.hardly B.basically C.absolutely D.finally
(3)A.refuse B.receive C.abandon D.abuse
(4)A.drive to B.stay in C.come from D.head for
(5)A.saw B.remind C.forget D.remember
(6)A.field B.street C.side D.way
(7)A.gift B.lift C.chance D.sign
(8)A.attitude B.trip C.route D.road
(9)A.dark B.sunny C.cold D.windy
(10)A.walked B.escaped C.drove D.flew
(11)A.confronting B.finding C.deciding D.causing
(12)A.something B.anything C.nothing D.everything
(13)A.turned B.reached C.looked D.got
(14)A.angry B.nervous C.sad D.grateful
(15)A.give up B.pick up C.put up D.set up
(16)A.and B.if C.though D.unless
(17)A.life B.business C.adventure D.entertainment
(18)A.laughter B.success C.complaint D.love
(19)A.suffering B.travelling C.playing D.studying
(20)A.enjoy B.change C.risk D.share

【题目】根据短文理解,选择正确答案。
Salvador Dali (1904-1989) was one of the most popular modern artists. The Pompidou Centre in Paris is showing its respect and admiration for the artist and his powerful personality with an exhibition bringing together over 200 paintings, sculptures, drawings and more. Among the works and masterworks on exhibition the visitor will find the best pieces, most importantly The Persistence of Memory. There is also L'Enigme sans Fin from 1938, works on paper, objects, and projects for stage and screen and selected parts from television programmes reflecting the artist's showman qualities.
The visitor will enter the World of Dali through an egg and is met with the beginning, the world of birth. The exhibition follows a path of time and subject with the visitor exiting through the brain.
The exhibition shows how Dali draws the viewer between two infinities (无限). “From the infinity small to the infinity large, contraction and expansion coming in and out of focus: amazing Flemish accuracy and the showy Baroque of old painting that he used in his museum-theatre in Figueras,” explains the Pompidou Centre.
The fine selection of the major works was done in close collaboration (合作) with the Museo Nacional Reina Sofia in Madrid, Spain, and with contributions from other institutions like the Salvador Dali Museum in St. Petersburg.
(1)Which of the following best describe Dali according to Paragraph 1?
A.Optimistic.
B.Productive.
C.Generous.
D.Traditional.
(2)What is Dali's The Persistence of Memory considered to be?
A.One of his masterworks.
B.A successful screen adaptation.
C.An artistic creation for the stage.
D.One of the best TV programmes.
(3)How are the exhibits arranged at the World of Dali?
A.By popularity.
B.By importance.
C.By size and shape.
D.By time and subject.
(4)What does the word “contributions” in the last paragraph refer to?
A.Artworks.
B.Projects
C.Donations.
D.Documents.

【题目】阅读下面短文, 从短文后各题所给的四个选项(A、B、C、D)中, 选出可以填入空白处的最佳选项。
When I was a boy I didn't have a smart phone. Home computers were unheard of, and our 13-inch television could only get one channel in clearly. Yet, I was never 1. When spring arrived I would 2 my trusty bike and ride. I would pedal for hours, feel the wind on my face and laugh with3 as I rode down the hills. When summer came I would find myself 4 every day at the local pool or the river down the hill from my home. I never got sunburned5 I was never out of the water long enough. When it was 6 my friends and I would play football for hours and when the leaves fell we would would gather them into huge golden and red 7 to jump in. The first 8 of winter didn't stop the fun either: my brothers and I would have snowball fights and 9 into the woods to cut down our Christmas tree. 10 I would sit in my favorite chair by the warm, wood stove and read books that carried my11away to different lands and endless adventures.
Those simple 12 always brought me so much fun, so much laughter, and so much happiness. There was 13 to be bored about because there was always something to do, something to enjoy, and something to14 I fell a bit sorry for the children of today because they are spending so much time watching and so little time 15
One thing I am16, though, is that even in this technological world the simple pleasures of life can still comfort your soul. A hug still warms your heart. A walk in the woods still 17 your spirit. Petting a dog, playing a game,18 a hand, and saying “I love you” still make you feel joy. God loves us so much and God gives us the simple pleasures of life to enjoy and to 19. Embrace them all. Welcome them into your day, take them into your heart, and share them with everyone. Live and love as a joyous Child of God today and 20 .
(1)A.annoyed B.bored C.frustrated D.confused
(2)A.put out B.give out C.pull out D.work out
(3)A.optimism B.pressure C.satisfaction D.joy
(4)A.swimming B.playing C.fishing D.diving
(5)A.though B.once C.while D.because
(6)A.vacation B.fall C.evening D.weekend
(7)A.sheets B.squares C.piles D.rolls
(8)A.frost B.ice C.snow D.cold
(9)A.walk B.advance C.steal D.slide
(10)A.Soon B.However C.Therefore D.Later
(11)A.enthusiasm B.imagination C.emotion D.devotion
(12)A.seasons B.memories C.pleasures D.accounts
(13)A.nothing B.such C.much D.none
(14)A.love B.intend C.attempt D.feel
(15)A.sleeping B.living C.traveling D.riding
(16)A.sure about B.proud of C.considerate of D.curious about
(17)A.loses B.breaks C.calms D.shows
(18)A.shaking B.waving C.getting D.holding
(19)A.share B.appreciate C.reserve D.possess
(20)A.yesterday B.always C.never D.nowadays

【题目】根据短文理解,选择正确答案。
What will man be like in the future—in 5,000 or even 50,000 years from now? We can only make a guess, of course, but we can be sure that he will be different from what he is today, for man is slowly changing all the time.
Let us take an obvious example. Man, even five hundred years ago, was shorter than he is today. Now, on average, men are about three inches taller, so we may assume (假定) that man will continue to grow taller. Again, as time goes on, we shall have to use our brains more and more. This is likely to bring about a physical change to the head, in particular, the forehead will grow larger.
Nowadays our eyes are in constant use. In fact, we use them so much that very often they become weaker and we have to wear glasses. But over a very long period of time it is likely that man's eyes will grow stronger.
On the other hand, we are likely to make less use of our arms and legs, which, as a result, are likely to grow weaker. At the same time, however, our fingers will grow more sensitive because they are used a great deal in modern life.
But what about hair? This will probably disappear from the body altogether in course of time because it does not serve a useful purpose any longer.
Perhaps all these give the impression that in the future man will not be a very attractive creature to look at! This may well be true. All the same, in spite of all these changes, future man will still have a lot in common with us.
(1)What does the passage mainly tell us?
A.Man's life will be different in the future.
B.Future man will look quite different from us.
C.Man is growing taller and uglier as time passes.
D.Man's organs' functions will be weaker.
(2)What serves as the evidence that man is changing?
A.Man's hair is getting thinner and thinner.
B.Man has got stronger eyes now than he ever had.
C.Man's arms and legs have become lighter and weaker.
D.Man has been growing taller over the past 500 years.
(3)According to the passage, we can learn that ________.
A.human beings will become less attractive in the future
B.less use of a part of the body will become weaker
C.human beings hope for a change in the future life
D.future life is always predictable

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网