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2011职称英语考前每日一练[卫生类A级-第51期]

2011-02-10 09:04 来源:正保会计网校 打印 | 收藏 |
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  第2部分:阅读判断(第1~7题,每题1分,共7分)

  下面的短文后列出了7个句子,请根据短文的内容对每个句子做出判断:如果该句提供的是正确信息,请选择A;如果该句提供的是错误信息,请选择B;如果该句的信息文中没有提及,请选择C。

Using HIV Virus to Cure Cancer

  Scientists are planning to use human immunodeficiency (免疫缺陷) virus (HIV), one of mankind's most feared viruses, as a carrier of genes which can fight cancer and a range of diseases that cannot be cured. The experts say HIV has an almost perfect ability to avoid the body's immune (免疫的) defenses, making it ideal for carrying replacement genes into patients' bodies, according to the Observer.

  A team at the California-based Salk Institute, one of the world's leading research centers on biological sciences, has created a special new breed of HIV and has started negotiations with the U.S. Food and Drug Administration (FDA) to begin clinical gene therapy (治疗) trials this year. The first trials are expected to involve patients suffering from cancers that cannot be cured by surgery although project leader Professor Inder Verma said the HIV technique would have "far wider applications".

  The plan remains very likely to cause controversy since it involves making use of a virus which has caused more than 22 million deaths around the world in the past two decades. Verma said that the idea of using HIV for a beneficial purpose was "shocking" but the fierce nature of HIV had disappeared by having all six of the potentially deadly genes removed.

  Illnesses such as various cancers are caused when a gene in a patient's body fails to work properly. In the past two years, breakthroughs in genetics (遗传学) have led gene therapy scientists to try and replace the genes that do not function normally.

  Unfortunately, the body's immune defenses have been known to attack the modified genes and make them lose their effects before they can start their task and progress in the field has been held up by the lack of a suitable carrier.'

  The HIV virus has the ability to escape from, and. then destroy, the immune defense cells designed to protect our bodies and this makes it attractive to scientists as a way of secretly conveying replacement genes into patients' bodies.

  1 FDA has approved the plan of using HIV to cure cancer in humans

  A Right B Wrong C Not mentioned

  2 The idea of using HIV for a beneficial purpose has been widely accepted.

  A Right B Wrong C Not mentioned

  3 HIV can be safely used to cure cancer only if the deadly genes have been removed

  A Right B Wrong C Not mentioned

  4 The HIV virus is an excellent warrior to fight the body's immune cells

  A Right B Wrong C Not mentioned

  5 Other countries are also expected to begin clinical gene therapy trials soon

  A Right B Wrong C Not mentioned

  6 It is the lack of money that has held up the progress in using replacement genes to cure cancer.

  A Right B Wrong C Not mentioned

  7 The HIV virus has caused more deaths in developed countries.

  A Right B Wrong C Not mentioned

   同时按下Crtl键和A键查看答案

  

1. B  2. B  3. A  4. A  5. C  6. B  7. C

我要纠错】 责任编辑:桔梗
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学员:chuhero 感谢周涵老师,职称英语过了。我觉得应该在这里跟老师说声谢谢,老师的讲课很实用,针对性强,是很有学习价值的课程,如果你想通过职称英语考试,就听周老师的课程吧。

学员:王仁芝 我去年7月开始差不多从零学起,坚持到考试,考了72分,十分感谢老师及网校的辅导!

学员:lilizhangx 职称英语通过了!毕业10年了,没怎么接触英语,跟着周涵老师学习,一次通过!

学员:张洪杰 首先感谢周涵老师,好多年没有学习了,经过老师的讲解顺利过关,这已经出乎我的预料,真的很激动,终于没让老师们失望,通过了,很高兴。

学员:xsqxxlxzj 十多年没有学习过英语了,通过职业培训教育网3个多月的学习,83分通过职称英语综合C级考试,非常感谢周涵老师,谢谢您!

学员:best888zhou 毕业以后就没有翻过英语了,丢了有七年了,虽然以前基础还不错,但这次真的是没有信心,过年后开始复习,用了差不多一个月的时间,B级综合考了80分,很开心,谢谢周涵老师的细致讲解!

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