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    Babies born in summer are more likely to become short-sighted in late life, a study has shown.



    As many as a quarter of all cases of short-sightedness are caused by too great an exposure to sunlight in the first weeks of life, say eye experts.
    They are advising all parents to put sunglasses on their babies during the first weeks.
    Scientists had already established that over-exposure to sunlight caused short-sightedness in animals.
    Researchers who compared the months in which babies were born with whether they needed glasses later on say the principle also applies to humans.
    A study of almost 300,000 young adults─the largest of its kind─showed that those born in June and July had a 25 per cent greater chance of becoming severely short-sighted than those born in December or January. Research leader Professor Michael Belkin, of Tel Aviv University, said it was because prolonged illumination(光照) causes the eyeball to lengthen, causing short-sightedness.
    Hence the more light a newborn is exposed to, the more the eyeball lengthens and the worse the short-sightedness will be.
    The mechanism which lengthens the eyeball is associated with levels of melatonin(褪黑激素), a pigment (色素) which protects the skin against harmful rays of the sun.
    In young babies not enough melatonin is released as protection, meaning they are more vulnerable to sunburn and changes to eyeball shape.
    Sight expert Professor Daniel O’Leary, of Anglia Ruskin University in Cambridge, said “At the moment we don’t know the precise cause of why light exposure affects sight, but the evidence seems to prove that it is one of the reasons for people becoming short-sighted.”
    55. Babies born in summer are more likely to be short-sighted ____________.
    A. because the summer sun is too strong for babies
    B. because babies born in summer have lengthened eyeballs
    C. if they are exposed to much sunlight in the first weeks after they are born
    D. if parents don’t know a proper way to protect their babies’ eyes
    56. Melatonin is a kind of material to ___________.
    A. prevent the eyes from becoming near-sighted
    B. protect the skin from harmful sun rays
    C. make our body strong
    D. protect babies’ eyes from summer sun
    57.   From what Professor Daniel O’Leary says we can conclude that ___________.
    A. there is no evidence that short-sightedness is related to exposure to sunlight
    B. whether light exposure affects sight still needs to be further proved
    C. he believes that light exposure can cause short-sightedness
    D. he tries to give the cause of why light exposure affects sight
    58.   The underlined word “vulnerable” in the passage probably means __________.
    A. easy to be harmed                          B. resistant
    C. protective                                     D. changeable

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人生感悟类阅读的概念

生活感悟类的文章就是指能给人心灵以启迪,使人从中受到教育的文章。这类文章的体裁可以是记叙文,如生活中一些感人故事或情感故事,有点类似心灵鸡汤一样的短文。


生活感悟类阅读解题指导:

一、文章特点:

生活感悟类的文章就是指能给人心灵以启迪,使人从中受到教育的文章。这类文章的体裁可以是记叙文,如生活中一些感人故事或情感故事,有点类似心灵鸡汤一样的短文。有时故事的结尾会有一句“点睛之笔”,点出全文的中心思想,就像《伊索寓言》里的寓言一样。还可能是夹叙夹议的哲理散文或生活随笔。散文随笔通常会阐述一种朴素易懂,耳熟能详的人生道理或宝贵品质。文章的结构和议论文类似,一般是总分总或总分结构。每段首句或尾句为主题句(论点),其它句子围绕主题展开论述(论据),论证方法多种多样,或举例,或引用名言,或正反对照等。

二、解题技巧:

针对生活感悟类文章的特点,做这类文章的完形填空时,要特别注意以下几点:
1、重点理解全文的首句。如果是记叙文,找出when,where,who,what等基本要素。如果是散文随笔,充分理解文章的中心句—全文的主题。
2、阅读全文的结尾段或结尾句,有助于理解文章所阐述或蕴含的哲理、感悟或忠告等。
3、调动自己的背景知识和情感。这类文章不会讲大道理也不会涉及到一些很专业的知识技术领域,而是谈一些小事和简单的道理,所以如果读者能和作者产生感情上的共鸣,读者会更好地把握作者的意图态度,从而提高做题的准确度。因此,考生在平时要做一个有心人,即用心去感悟生活中发生的小事,思考人生的一些基本道理,多阅读一些短小精悍的美文,多写写自己的心情故事和对生活学习的感悟。只有平时多用心,做题时才能调动自己的背景知识和情感。