第1页：2017年考研英语阅读理解考前冲刺试题第六套

第2页：考研各科目历年真题汇总（2016-2011）

第3页：2017年考研热点资讯推荐

第4页：2017考研英语模拟试题

第5页：2017考研英语备考辅导

At 18， Ashanthi DeSilva of suburban Cleveland is a living symbol of one of the great intellectual achievements of the 20th century. Born with an extremely rare and usually fatal disorder that left her without a functioning immune system (the “bubble-boy disease，” named after an earlier victim who was kept alive for years in a sterile plastic tent)， she was treated beginning in 1990 with a revolutionary new therapy that sought to correct the defect at its very source， in the genes of her white blood cells. It worked. Although her last gene-therapy treatment was in 1992， she is completely healthy with normal immune function， according to one of the doctors who treated her， W. French Anderson of the University of Southern California. Researchers have long dreamed of treating diseases from hemophilia to cancer by replacing mutant genes with normal ones. And the dreaming may continue for decades more. “There will be a gene-based treatment for essentially every disease，” Anderson says， “within 50 years.”

It’s not entirely clear why medicine has been so slow to build on Anderson’s early success. The National Institutes of Health budget office estimates it will spend $432 million on gene-therapy research in 2005， and there is no shortage of promising leads. The therapeutic genes are usually delivered through viruses that don’t cause human disease. “The virus is sort of like a Trojan horse，” says Ronald Crystal of New York Presbyterian/Weill Cornell Medical College. “The cargo is the gene.”

At the University of Pennsylvania’s Abramson Cancer Center， immunologist Carl June recently treated HIV patients with a gene intended to help their cells resist the infection. At Cornell University， researchers are pursuing gene-based therapies for Parkinson’s disease and a rare hereditary disorder that destroys children’s brain cells. At Stanford University and the Children’s Hospital of Philadelphia， researchers are trying to figure out how to help patients with hemophilia who today must inject themselves with expensive clotting drugs for life. Animal experiments have shown great promise.

But somehow， things get lost in the translation from laboratory to patient. In human trials of the hemophilia treatment， patients show a response at first， but it fades over time. And the field has still not recovered from the setback it suffered in 1999， when Jesse Gelsinger， an 18-year-old with a rare metabolic disorder， died after receiving an experimental gene therapy at the University of Pennsylvania. Some experts worry that the field will be tarnished further if the next people to benefit are not patients but athletes seeking an edge. This summer， researchers at the Salk Institute in San Diego said they had created a “marathon mouse” by implanting a gene that enhances running ability; already， officials at the World Anti-Doping Agency are preparing to test athletes for signs of “gene doping.” But the principle is the same， whether you’re trying to help a healthy runner run faster or allow a muscular-dystrophy patient to walk. “Everybody recognizes that gene therapy is a very good idea，” says Crystal. “And eventually it’s going to work.”

注(1)：本文选自Newsweek;12/6/2004， p55-55， 2/3p， 1c;

注(2)：本文习题命题模仿对象： 第1、2题分别模仿2003年真题text1的第2题和第1题;第3、4题分别模仿2004年真题text1的第5 题和第3题;第5题模仿2002年真题text3的第5题;

1. The case of Ashanthi Desilva is mentioned in the text to ____________.

[A] show the promise of gene-therapy

[B] give an example of modern treatment for fatal diseases

[C] introduce the achievement of Anderson and his team

[D] explain how gene-based treatment works

2. Anderson‘s early success has ________________.

[A] greatly speeded the development of medicine

[B] brought no immediate progress in the research of gene-therapy

[C] promised a cure to every disease

[D] made him a national hero

3. Which of the following is true according to the text?

[A] Ashanthi needs to receive gene-therapy treatment constantly.

[B] Despite the huge funding， gene researches have shown few promises.

[C] Therapeutic genes are carried by harmless viruses.

[D] Gene-doping is encouraged by world agencies to help athletes get better scores.

4. The word “tarnish” (line 5， paragraph 4) most probably means ____________.

[A] affect

[B] warn

[C] trouble

[D] stain

5. From the text we can see that the author seems ___________.

[A] optimistic

[B] pessimistic

[C] troubled

[D] uncertain

答案：A B C D A

2017年全国各地考研报名时间|现场确认时间   考试时间  模拟试题

2017年考研招生简章|专业目录|参考书目 准考证打印时间  备考经验

2017年全国硕士研究生考试报名答疑汇总   考场规则  历年真题

2017年考研模拟试题：

2017考研英语语法专项复习：语法训练汇总

考研英语模拟试题及答案：完型填空10套

2017年考研英语翻译训练汇总

2017年考研英语阅读理解练习及答案10套

2017年考研英语完型填空模拟题及答案20套

2017年考研英语阅读理解试题及答案25套

2017年考研英语翻译模拟试题及答案10套

2017年考研英语语法专项练习11套

2017年考研英语阅读理解10套

2017年考研英语完型填空专项练习12套

2017年考研英语：翻译分类练习汇总

2017年考研英语语法训练汇总

2017年考研英语完型填空练习汇总

2017年考研英语阅读理解精读19套

2017年考研英语完型填空强化模拟试题17套

2017年考研英语语法题型训练6套

2017年考研英语备考辅导：

2017考研英语完型解题技巧汇总

2017考研英语语法小讲汇总

2017年考研英语词汇：同义词辨析汇总

2017年考研英语长难词汇记忆汇总

2017考研英语作文：实用小词精选汇总

2017考研英语词汇拓展：中国特色词汇汇总

2017年考研英语高频词组汇总

2017考研英语拓展阅读汇总