A healthy do of sunshine may be the cret to staying young, British scientist

题文

A healthy do of sunshine may be the cret to staying young, British scientists have disclod.Vitamin D is produced naturally by the skin in respon to sunlight and may help to slow the ageing process and protect against heart dia, according to the study.Rearchers from King's College London studied 2,160 women aged between 18 and 79, looking at their telomeres - a biological marker of ageing found in DNA．As people get older, their telomeres get shorter and they are easy to have illness.But the study found women with high levels of vitamin D had comparatively longer telomeres - a sign of being biologically younger and healthier.The study suggests vitamin D may help to slow down the ageing process of DNA, and therefore the ageing process as a whole.Lead rearcher Dr Brent Richards said: "The results are exciting becau they prove for the first time that people who have higher levels of vitamin D may age more slowly than people with lower levels of vitamin D．"This could help to explain how vitamin D has a protective effect on many ageing related dias, such as heart dia and cancer."He said further studies are required to confirm the findings.Professor Tim Spector, head of KCL's twin rearch unit, and a co-author of the report, added: "Although it might sound absurd(荒谬的), it's possible that the same sunshine which may increa our risk of skin cancer may also have a healthy effect on the general ageing process."Vitamin D made by the action of sunlight on the skin accounts for 90 per cent of the body's supply, but lower levels can also be obtained through food such as fish, eggs and breakfast cereals.Other studies have suggested the vitamin plays a key role in protecting against cancer and heart dia.64．What’s the best title of this passage? A．Sunshine 'helps to keep you young' B．Vitamin D has a protective effect on many dias C．Telomeres - a biological marker of ageing D．People have found the cret to having a long life65．How can people get vitamin D?A．through water   B．through sunshine  C．through food   D．both B and C66．What does the underlined word in paragraph three refer to? A．It refers to a kind of vitamin that can keep you young. B．It refers to a biological marker of ageing found in DNA. C．It refers to a kind of element that can be obtained from sunshine. D．It refers to a part of the body.67．Which of the following is not true according to the passage? A．women with high levels of vitamin D shows a sign of being biologically younger and healthier. B．vitamin D has a protective effect on many ageing related dias. C．too much sunshine may increa our risk of skin cancer. D．It has been proved that sunshine 'helps to keep you young'. 题型：未知难度：其他题型

答案

64-67 ADBD

解析

英国科学家日前公布，长期坚持晒太阳可能是永葆青春的秘诀。64．主旨大意题。根据文章第一段主题段可以看出，长期坚持晒太阳可能是你永葆青春的秘诀。65．细节理解题。根据倒数第二段Vitamin D made by the action of sunlight on the skin accounts for 90 per cent of the body's supply, but lower levels can also be obtained through food such as fish, eggs and breakfast cereals.可以看出，维生素D主要通过日晒获得，也可通过食物获得。66．词意理解题。根据第三段第二行：looking at their telomeres - a biological marker of ageing found in DNA.可以看出，telomeres，是位于染色体末端的DNA微粒。67．细节判断题。根据倒数第四段He said further studies are required to confirm the findings.可以看出，还需要进一步的研究证实这项发现。

考点

据考高分专家说，试题“A healthy do of su.....”主要考查你对 [健康环保类阅读 ]考点的理解。 健康环保类阅读

健康环保累阅读概念：

健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。体裁有记叙文、 说明文、议论文和各种应用文。

健康环保类文章阅读技巧：

   健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。阅读此类短文要以现象或事物为中心进行思考，理解现象产生的原因、条件和客观规律等。同时要抓住事物的特征、用途和相互关系等。科普环保类文章一般为说明文，从结构上看大致可分为三个部分：   第一部分一般是文章的首段，主要用来提出文章的主题，即文章想要阐述、说明的主要内容；   第二部分是文章的主体，可由若干个段落组成，对文章的主题进行展开说明；   第三部分是结尾段，对文章的主题进行归纳总结。这类文章多用一般现在时，而且一般多使用客观性词语表述。有时为了强调客观性，也常使用被动语态。   从近几年的考试题来看，科普环保类的文章越来越与人们的实际生活相接近。由于此类文章缺乏故事情节，很多同学对此类文章感到费解。但一般的科普类文章都是就事论事，需要逻辑推理和想象的时候较少，因此此类阅读题也没有同学们想象中的那么难，只要多加训练，就能较好地答题。【阅读策略】 1、概要(Summarizing)：  阅完材料后，将所阅材料浓缩，摘要，做出所阅材料的书面或口头梗概。 2、组织(Organization)：  阅读后根据阅读内容，识别观点、人物、事件之间的关系以及文章的结构关系。如：时间关系、比较或对比关系、相关关系及因果关系等。