behind code making. The science of creating and reading coded messages is called cryptography. There are three main types of cryptography. 37 For example, the first letters of “My elephant eats too many eels” Spell out the hidden message “Meet me.”
38 You might represent each letter with a number, For example, Let’s number the letters of the alphabet, in order, from 1 to 26. If we substitute a number for each letter, the message “Meet me” would read “13 5 20 13 5.”
A code uses symbols to replace words, phrases, or sentences. To read the message of a real code, you must have a code book. 39 For example “bridge“ might stand for “meet” and “out” might stand for “me.” The message “bridge out” would actually mean “Meet me.”40 However, it is also hard to keep a code book secret for long. So codes must be changed frequently. A.It is very hard to break a code without the code book. B.In any language, some letters are used more than others. C.Only people who know the keyword can read the message. D.As long as there have been codes, people have tried to break them. E.You can hide a message by having the first letters of each word spell it out. F.With a code book, you might write down words that would stand for other words.
G.Another way to hide a message is to use symbols to stand for specific letters of the alphabet. 【答案】 36.-40 D E G.F A 【解析】
37.E考查对上下文的理解和判断能力。后面举的例子是来证明人们设置密码时往往会利用一些单词的第一个字母来作为密码，由此判断E选项内容符合语境逻辑。
38.G考查对上下文的理解和判断能力。根据后面的解释内容可以判断这是介绍密码设置的又一种方法，故G选项内容Another way to hide a message is to use symbols to stand for specific letters of the alphabet.符合语境。
39.F考查对上下文的理解和判断能力。根据后面的举例以及前句中的 a code book可以判断
该句是介绍密码书的使用，故判断F选项
With a code book, you might write down words that would stand for other words.可以起到承上启下的作用。
40.A考查对上下文的理解和判断能力。根据空后内容的转折可知尽管利用密码书可以破译密码，但是一本密码书也不会使用很久的时间，故判断A选项It is very hard to break a code without the code book.符合语境。 考点：七选五阅读理解
【归纳总结】七选五阅读填空考查考生对文章的整体内容和结构以及上下文逻辑意义的理解和掌握。解题技巧如下：1.注重句式的对接，比如排比句，祈使句等。2. 注重词汇的衔接：也就是利用上下文所重复的关键词，即词的复现原则进行判断，其中包括同义词，原词和反义词的复现。3.注重举例或解释等。如37题和39题只需要利用for example来进行解题。
2.【2016·全国新课标II】根据短文内容，从短文后的选项中选出能填入空白处的最佳
选项。选项中有两项为多余选项。
A garden that’s just right for you
Have you ever visited a garden that seemed just right for you, where the atmosphere of the garden appeared to total more than the sum(总和) of its parts? 16 . But it doesn’t happen by accident. It starts with looking inside yourself and understanding who you are with respect to the natural world and how you approach the gardening process. ●___17
Some people may think that a garden is no more than plants, flowers, patterns and masses of color. Others are concerned about using gardening methods that require less water and fewer fertilizers(肥料). 18 . However, there are a number of other reasons that might explain why you want to garden. One of them comes from our earliest years. ●Recall(回忆)your childhood memories
Our model of what a garden should be often goes back to childhood. Grandma’s rose garden and Dad’s vegetable garden might be good or bad, but that’s not what’s important. 19 --how being in those gardens made us feel. If you’d like to build a powerful bond with your garden, start by taking some time to recall the gardens of your youth. 20 then go outside and work out a plan to translate your childhood memories into your grown-up garden. Have fun. A. Know why you garden
B. Find a good place for your own garden C. It’s our experience of the garden that matters D. It’s delightful to see so many beautiful flowers
E. Still others may simply enjoy being outdoors and close to plants F. You can produce that kind of magical quality in your own garden, too G. For each of those gardens, writer down the strongest memory you have 【答案】16. F 17. A 18. E 19. C 20. G
17.A 根据本段前两句“Some people may think that a garden is no more than plants, flowers, patterns and masses of color. Others are concerned about using gardening methods that require less water and fewer fertilizers(肥料).”可知不同人对花园有不同的看法，再倒数第二句“然而，有很多能够解释你为什么想做园艺的原因”可知我们首先要搞清楚为什么要做园艺。故A项正确。
18.E 本段前两句提出有些人认为花园只是一些花花草草，有些人关心少用水少用废料。本句仍然在说明人们对园艺的不同看法。故E项“还有其他人只是喜欢在户外接触植物”与上下文一致，也是人们对于园艺的观点。
19.C 根据前句“......那些都不重要”可知划线句强调的是在园艺中对我们来说真正重要的是什么。故C项“重要的是我们搞园艺的经历”符合上下文串联。
【名师点睛】
本文属于七选五阅读中最常见的设空在段首的方法，通常是段落主题句。认真阅读后文内容，根据段落一致性原则，查找同义词或其他相关的词，推断出主题句。本题我们根据倒数第二句“However, there are a number of other reasons that might explain why you want to garden.”可知我们首先要知道为什么要搞园艺。故A项为本段主题句。
当七选五阅读设空在句首时，还可能存在以下两种情况：
1. 属于段落间的过渡句。这时要前瞻后望找启示，即阅读上一段结尾部分，通常正确答案与上一段结尾有机地衔接起来，并结合下一段内容，看所选的答案是否将两段内容连贯起来。
2. 与后文是并列、转折、因果关系等。着重阅读后文第一两句，锁定线索信号词，然后在选项中查找相关特征词。通常正确答案的最后一句与空白后的第一句在意思上是紧密衔接的，因此这两句间会有 某种的衔接手段，尤其当选项是几句话时。比如，如果选项中出现时间年代时，往往要注意与原文中年代的前后对应关系。 考点：考查说明文阅读
3.【2016·全国新课标III】根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Everyone knows that fish is good for health. 16 But it seems that many people don’t cook fish at home. Americans eat only about fifteen pounds of fish per person per year, but we eat twice as much fish in restaurants as at home. Buying, storing, and cooking fish isn’t difficult. 17 This text is about how to buy and cook fish in an easy way.
18 Fresh fish should smell sweet: you should feel that you’re standing at the ocean’s edge. Any fishy or strong smell means the fish isn’t fresh. 19When you have bought a fish and arrive home, you’d better store the fish in the refrigerator if you don’t cook it immediately, but fresh fish should be stored in your fridge for only a day or two. Frozen fish isn’t as tasty as the fresh one.
There are many common methods used to cook fish. 20 First, lean it and season it with your choice of spices(调料).
Put the whole fish on a plate and steam it in a steam pot for 8 to 10 minutes if it weighs about one pound. (A larger one will take more time.) Then, it’s ready to serve. A. Do not buy it.
B. The easiest is to steam it. C. This is how you can do it. D. It just requires a little knowledge. E. The fish will go bad within hours.
F. When buying fish, you should first smell it.
G. The fats in fish are thought to help prevent heart disease. 【答案】 16.G 17.D 18.F 19.A 20.B 【解析】
试题分析：文章主要介绍了一些买鱼和烧鱼的常识。带有强烈气味的鱼不新鲜，最简单的方法是蒸鱼。
16.G考查上下文串联。第一句“Everyone knows that fish is good for health.”是总写，But表示转折，说明but前面一句是对第一句的解释，G项“鱼中的脂肪有助于预防心脏病”符合语境，故选G。
17.D考查上下文串联。题目前一句“Buying, storing, and cooking fish isn’t difficult.”可知，购买，存放和烧鱼并非难事，再根据后面一句可知，文章主要介绍了买鱼和烧鱼的简单知识，D项“这仅仅需要一点知识”符合语境，此题容易与C项混淆，C项后面应该直接跟烧鱼的方法，即C项与后一句重复，故选D。
考点：生活类短文阅读 【名师点睛】 高考七选五解题方法
1.通读全文，了解文章大意。这是一个泛读的过程，目的是了解文章大意，为以后的理解做铺垫。
2.分析句型，了解语法构成