本周的新文章依旧选自New Scientist，是生物健康相关话题——灰鲸长寿的秘诀。语言平实易懂。

　　雅思考试中和海洋生物、健康相关的话题也非常多。这篇文章不算长，一起来看看吧~

　　背景简介

　　灰鲸：哺乳动物，寿命可达70余年。

　　原文节选

　　[1]Grey whales are one of the longest-lived mammals in existence.[2]The secret to their long lives? [3]A resilience to stress, according to the first genetic sequencing of the animals. (Para. 1)

　　[4]The genes for stress resistance are also shared by other long-lived animals, like naked mole rats, which can outlive mice by 25 years,give or take, and humans. [5]It is this stress resistance that protects most long-lived animals from cancer, says Dmitri Toren, now at the Romanian Academy in Bucharest. (Para. 2)

　　[6]Toren and his colleagues are investigating ageing and why some animals are able to live long lives. [7]The team decided to study the grey whale because it can live into its 70s, and is considered to be the eighth longest-lived mammal. (Para. 3)

　　词汇表达

　　1. mammal n. 哺乳动物

　　2. resilience n. 弹性

　　resilient adj. 有弹性的;适应性强的

　　Rubber is more resilient than wood.

　　橡胶比木头弹性好。

　　She's a resilient girl - she won't be unhappy for long.

　　她是个适应力很强的女孩儿——她不会长时间沉浸于悲伤之中的。

　　3. genetic sequencing 基因测序(单个单词必须掌握)

　　4. resistance n. 抵抗;反对

　　resistance to disease 抗病

　　There's a lot of resistance to the idea of a united Europe.

　　很多人反对欧洲统一的想法

　　5. outlive v. 比……活得长;比……持续时间长

　　He outlived all of his brothers.

　　他比他所有的兄弟都活得长。

　　类似的单词还有：

　　outpace v.(速度上)超过，比…更快

　　outweigh v. 比…更重要;重于;大于

　　6. give or take 增减……而无大变化;允许有小误差;差不多

　　He was 80 years old, give or take a year.

　　他八十岁上下。

　　7. investigate v. 调查，审查

　　investigate the cause of a railway accident

　　调查一次铁路事故的原因

　　investigation

　　8. ageing n. 老龄化(社会类话题语料)

　　原文节选

　　1. 长句【4】

　　1

　　[A]The genes for stress resistance [B]are [C]also shared by other long-lived animals, [D]like naked mole rats, [E]which can outlive mice by 25 years, [F]give or take, [G]and humans.

　　这句主系表结构明显，不明白主系表结构可以翻看我们往期外刊精读内容，有详细介绍。

　　×

　　[A][B][C]主系表结构，是主句。

　　[D]非限定语，遗忘的同学可回顾【环保公主讲解5】中语法讲解限定性和非限定性的区别。

　　[E]which引导非限定从，补充说明前句rats的详细信息。

　　[F]插入语，无视即可，表示“差不多”。

　　[G]本该放在rats后面，和naked mole rats呈并列关系，调整语序应为like naked mole rats and humans。

　　行文简析

　　Para. 1-2 灰鲸长寿的秘密在于基因。

　　Para. 3 科学家为解灰鲸长寿之谜对其进行研究。