题文
阅读理解。 If you and your friends wish to share a secret, you can write it in code (编码), and no one else will be
able to read it.
Codes are one way of writing in secret. Ciphers (暗码) are another. In a code each word is written as a
secret code word or code number. In a cipher each letter is changed. Codes and ciphers have played an
important role in the history of the world. Julius Caesar, the Roman ruler who defeated almost all the countries
in Europe about 2, 000 years ago, used a cipher when he sent secret messages to his troops. During the
American Revolution, George Washington's spies used a kind of code to send him information about the enemy
before his military (军事的) action. In World War Ⅱ, the Americans "broke", or figured out, Japan's most
important navy codes and got enough information to destroy a powerful Japanese fleet( 舰队).
Storekeepers use codes to mark their goods. The codes show how much was paid for the goods or when
they were added to the stock (商品). Businessmen use codes to hide plans from their business enemies.
Sometimes personal letters or diaries are written in code. Many people enjoy figuring out codes and ciphers
simply as a hobby.
In the 16th century, codes and ciphers were very popular among scientists. They wrote messages to each
other in code so that no one else would learn their secrets. Geronimo Gardano, an Italian astrologer (星相家),
mathematician, and doctor, invented the trellis cipher. He took two sheets of paper and cut exactly the same
holes in each one. Then he sent one sheet, which he called a trellis, to a friend and kept the other for himself.
Whenever he wanted to write a message, he put his trellis over a clean sheet of paper and wrote the secret
message through the holes. Then he removed the trellis and filled the rest of the paper with words that would
make sense. When his friend received it, he put his trellis over the writing and read the secret message.
B. Differences between Codes and Ciphers
C. History of Codes and Ciphers
D. Inventors of Codes and Ciphers 2. Which of the following statements is true?A. Ciphers can be broken or figured out more easily than codes.
B. You could read some words in Geronimo's letter without his trellis.
C. The first person who ever used a cipher in history was Julius Caesar.
D. Fondness of using codes was the hobby of the scientists in the 16th century. 3. According to Geronimo Cardano, a trellis is _______. A. a piece of paper with many small holes
B. a secret message with a lot of small holes
C. a letter with unreadable words and sentences
D. a sheet of paper with groups of Arabic figures4. It is NOT mentioned in the passage that codes and ciphers are used for the purpose of _______. A. military affairs
B. commercial secrets
C. scientific achievements
D. personal enjoyment 题型：未知难度：其他题型
答案
1-4: ABAC解析
该题暂无解析
考点
据考高分专家说，试题“阅读理解。 If you a.....”主要考查你对 [日常生活类阅读 ]考点的理解。日常生活类阅读
日常生活类阅读的概念：
日常生活这一话题主要涉及人们衣食住行等方面的活动。这一话题的选材主要针对人们日常的工作，生活以及学习情况。做这一类题时，最主要的是要把握好人物的活动内容，时间和地点。
日常生活类阅读题答题技巧：
【题型说明】
该类文章内容涉及到人们的言谈举止、生活习惯、饮食起居、服饰仪表、恋爱婚姻、消遣娱乐、节日起源、家庭生活等。文章篇幅短小，追根溯源，探索各项风俗的历史渊源，内容有趣。命题也以送分题为主，如事实细节题、语义转换题、词义猜测题和简单推理判断题等。虽然这类文章读起来感觉轻松，试题做起来比较顺手，但绝不能掉以轻心。因为稍不留神，就会丢分。
【备考提醒】
为了保证较高准确率，建议同学们做好以下几点：
1、保持正常的考试心态。笔者在教学中发现，越是容易的试题，同学们越是容易失分。为什么呢？因为在这种情况下，同学们极易产生麻痹思想，认为题目好做，就不引起高度重视，于是思维不发散、不周密。而命题人就是利用同学们的这一弱点，设计陷阱题。所以，无论试题难易与否，我们都要保持正常的考试心态。试题容易，不欣喜；试题难，不悲观。
2、根据前面讲到的方法，认认真真、细细心心做好事实细节题。
3、做好语义转换题。这类题是根据英语中一词多义和某些词语在文中能表达一定的修辞意义的原则而设计的。要求同学们解释某生词的含义，确定多义词或短语在文中的意思，确认文中的某个代词所指代的对象，或者对英语中特有的表达、格言、谚语进行解释。这种题要求同学们一定要根据上下文猜测词义或理解句子，切不可望文生义。
4、做好简单推理判断题。简单推理判断题要以表面文字为前提，以具体事实为依据进行推理，做出判断。这种推理方式比较直接，只要弄清事实，即可结合常识推断出合理的结论。
