题目内容
7.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 the March 9edition 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 regenerated lenses with superior visual function in all 12of the baby cataract patients who received the procedure.
A congenital cataract-lens clouding that occurs at birth or shortly after-is an important cause of blindness in children.In the new research,Kang 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 25babies received the standard operation care.The latter group experienced a higher incidence of post-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.
32.What is the text mainly about?B
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
33.Which of the following best describe the new cataract treatment according to the passage?D
A.Convenient B.Comfortable C.Cheap D.Safe
34.What can we learn about the new cataract treatment?B
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
35.What does the underlined word"congenital"in the fourth paragraph mean?A
A.BornB.StrangeC.SeriousD.Dangerous.
分析 文章介绍了一项发明是用芯片将药物注入到患者的皮肤下.可以定期的给病人一些剂量的药物,这项发明会改变很多人的生活.
解答 32.B:主旨题:从文章第一段的句子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,可知文章主要讲述了一种用干细胞注射治疗白内障的方法.故选B.
33.D.细节理解题.由第三段It resulted in fewer complications(并发症) than the current harmful operation,可知这种方法相比于直接的手术,所导致的并发症很少,因此是安全的,故选D.
34.B.理解推断题.由第一段段意可知,中国和美国的研究人员已经开发出一种新的白内障恢复视力的方法,目前在婴儿试验,最终可能被用于成人,可推知以后会广泛应用,故选B.
35.A.词义推断题.由后面occurs at birth or shortly after-is an important cause of blindness in children,发生在出生或后不久,是儿童失明的一个重要原因,可知这是一出生就带的,故选A.
点评 这类阅读理解要求考生根据文章所述事件的逻辑关系,对未说明的趋势或结局作出合理的推断;或根据作者所阐述的观点理论,对文章未涉及的现象、事例给以解释.考生首先要仔细阅读短文,完整了解信息,准确把握作者观点.
Fall has finally arrived and nobody is more excited than those of us in Arizonal Last weekend the cooler weather rolled in with a lot of cool wind.So we celebrated by(101)Bkites with the kids.(102)Bthe kites soared higher and higher,my oldest son had a great(103)D.
"Let's cut the string and watch it fly away!"I tried to(104)Ato him that it might not work the way he was hoping but he was(105)Cthat we needed to cut the string.
(106)Ban opportunity to teach a life lesson,I(107)D.We cut the rope and to my son's sadness,the kite(108)Adrifted straight down to the ground.
When I turned around,my son had a look of(109)B0n his face.
"What happened!!"he said.
On our way back to the house,l explained to him that(110)Cneed two important things to fly:the string,and the wind.When we talk about success in life,we often talk about dreaming(111)Dand then going after those dreams.While that is(112)A,you will only be able to achieve those dreams if you are disciplined and(113)Bthe natural laws of success.While discipline will get you(114)Cthe ground,the wind is what will make you soar.What is the wind?The wind represents hardship and criticism(批评).(115)Asends us them to test our strength of our determination and our(116)Dfor our dreams.The wind will blow you over or lift you higher,(117)D0n what you are made of.
As you chase your dreams,don't forget to(118)Ayourself with the string of self-discipline and then turn your face into the wind and let it carry you to new(119)C.The only two things you can(120)Bare your attitude and your effort.
101.A.making | B.flying | C.striking | D.decorating |
102.A.While | B.As | C.Though | D.Since |
103.A.memory | B.sight | C.heart | D.idea |
104.A.explain | B.appeal | C.apologize | D.show |
105.A.confident | B.aware | C.stubborn | D.afraid |
106.A.Missing | B.Seeing | C.Offering | D.Choosing |
107.A.wondered | B.hesitated | C.sighed | D.agreed |
108.A.slowly | B.magically | C.strangely | D.constantly |
109.A.excitement | B.puzzlement | C.fear | D.expectation |
110.A.birds | B.clouds | C.kites | D.leaves |
111.A.distant | B.realistic | C.sweet | D.big |
112.A.correct | B.active | C.believable | D.ambitious |
113.A.study | B.follow | C.confirm | D.make |
114.A.on | B.above | C.off | D.from |
115.A.IJife | B.Wind | C.Discipline | D.Fate |
116.A.search | B.gift | C.plan | D.passion |
117.A.insisting | B.focusing | C.carrying | D.depending |
118.A.limit | B.present | C.guide | D.behave |
119.A.places | B.scenes | C heights | D.bases |
120.A.possess | B.control | C.appreciate | D.gain. |
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A. | number | B. | size | C. | percentage | D. | amount |