题文
Centuries ago, man discovered that removing moisture from food helps to store it, and that the easiest way to do this is to expose the food to sun and wind.All foods including water — cabbage and other leaf vegetables contains as much as 93% water, potatoes and other root vegetables 80%, lean (瘦的) meat 75% and fish, anything from 80% to 60%, depending on how fatty it is. If this water is removed, the activity of the bacteria which cause food to go bad is controlled.
Nowadays most foods are dried mechanically. The conventional method of such dehydration (脱水) is to put food in chambers (室) through which hot air is blown at temperature of about ll0'C at entry to about 43'C at exit. This is the usual method for drying such things as vegetables, minced meat, and fish.
Liquids such as milk, coffee, tea, soups and eggs may be dried by pouring them over a heated steel cylinder (圆筒), then put them into a chamber through which a current of hot air passes. In the first process, the dried material comes off the roller (滚筒) as a thin film which is then broken up into small, though still relatively flakes (薄片). In the second process it falls to the bottom of the chamber as small powder. Where recognizable pieces of meat and vegetables are required, as in soup, the ingredients (成分) are dried separately and then mixed.
Dried foods take up less room and weigh less than the same food packed in cans or
frozen, and they do not need to be stored in special conditions. For these reasons they
are invaluable to the climbers, explorers and soldiers in battle, who have little storage
space. They are also popular with housewives because it takes so little time to cook
them.
小题1:It can be inferred from the passage that ________.A．the rattier fish contain as much water as the lean oneB．the rattier the fish is, the more water it may containC．a fatty fish holds less water than a lean oneD．the water content of fish has nothing to do with the content of their fat小题2: The underlined word "conventional" in Paragraph 3 can most probably be replaced by _________.A．particularB．scientificC．usualD．special小题3:Which of the following statements is NOT true about drying food?A．The removal of water in food helps prevent it from going rotten.B．The open-air method of drying food has been known for hundreds of years.C．In the course of dehydration, the temperature of hot current coming from entry to exit is gradually going up.D．The process of drying liquids is much more complex than that of drying solid food.小题4:The last paragraph mainly talks about __________.A．the reason why housewives like dried foodB．the general convenience of dried foodC．the methods of storing foodD．the advantages of dried, canned and frozen food 题型：未知难度：其他题型
答案
小题1:B
小题2:C
小题3:C
小题4:B
解析
小题1:推理判断题。第二段讲到，鱼含有水分的多少取决于其肥瘦程度(depending on how fatty it is)，故可推断出越肥的鱼所含水分越多，故选B。
小题2:词义推澜题。作者在文章第三段介绍完conventional method后，说过这种方法为usual method，可推断出这里的conventional与usual同义，故选C。conventional：“常规的，通常的”。
小题3:细节理解题。从文章第三段第二句可知C不正确，温度不是不断升高，而是从110℃降到43℃．可从第一段判断A，B两项正确，D项可从第三段与第四段的内容相比较而得出，前者介绍的工序简单。后者复杂．
小题4:主旨大意题。最后一段主要讲dried food在包装、存储上的优点，也就是它的方便之处，这与B项中的convenience相对应。A项仅是此段讨论的一部分，C项说的是储存方法，和脱水食物易于存储是两码事。
考点
据考高分专家说，试题“ Centuries ago, man .....”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。
