Eating 40 percent less food could extend a person`s life by 20 years, according to scientists.

Researchers at the Institute of Health Ageing at University College London are developing a treatment that they hope will fight the `disease` of getting older.

They are looking into how genetics（遺傳學(xué)） and lifestyle can affect ageing and add years, possibly decades, to a person`s life.

Age-related diseases such as cardiovascular disease, cancer and neuro degeneration can also be treated, it is claimed.

They want to find out how the life of a rat can be increased by up to 30 percent simply by reducing its food intake.

Researcher Dr. Piper told the Independent : `If you reduce the diet of a rat by 40 percent it will live for 20 or 30 percent longer. So we would be talking 20 years of human life. This has shown on all sorts of animals, even Labradors(a kind of dog).`The scientists are also studying fruit flies, which share 60 percent of human genes and age in a similar manner, and mice.

They have already made the healthy lifespan(壽命) longer in both flies and mice by using drug treatments and a balanced diet. It is hoped that this combination will also work to extend(延長(zhǎng)) human life. Dr. Piper said: `If we discover the genes involved with ageing, we should be able to delay ageing itself. This is what we`ve found.`

He added that the field of research into extending life is only a decade old, so remains `in theory . It is their special approach to treating all age-related diseases caused by the `disease` of ageing itself that sets their research apart.

1.The author writes this text in order to_____.

A. encourage people to eat as little as possible

B. tell people how harmful food is to their health

C. introduce an on-going research on delaying ageing

D. show how similar mice and humans are to each other

2.How can people live longer according to the text?

A. Exercise regularly.

B. Reduce their diet properly.

C. Vary their lifestyles constantly.

D. Change their genes completely.

3.What does the underlined sentence in the last paragraph suggest?

A. The research is effort-taking.

B. The result of the research is reliable.

C. The research has been done for a long time.

D. There’s a long way to go to put the theory into practice.

 

1.C

2.B

3.D

【解析】

試題分析： 本文是一篇科普類文章。介紹一個(gè)有關(guān)食物的量與壽命長(zhǎng)短的關(guān)系的研究。

1. C 考查對(duì)作者寫作意圖的理解。本文是客觀介紹一個(gè)正在進(jìn)行著的研究，沒有主觀意愿。 因此，選C。

2. B 主旨大意題。本文的主旨大意是食物量和壽命長(zhǎng)短的關(guān)系。根據(jù) 第五段“They want to find out how the life of a rat can be increased by up to 30 percent simply by reducing its food intake.”可知。

3. D 考查學(xué)生對(duì)句子深層含義的理解。本句話的意思是這個(gè)研究才開始10年，所以還停留在理論層面，故選D。

考點(diǎn)：考查科普類閱讀

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