高考阅读理解之七选五 课件-2021届高三英语复习课件15张

高考阅读理解之七选五 (Gap Filling) 1. 题型介绍 2. 命题方向 3. 解题步骤 4. 解题技巧 Secret codes(密码)keep messages private. Banks，companies，and government agencies use secret codes in doing business，especially when information is sent by computer. People have used secret codes for thousands of years.__36__ Code breaking never lags(落后)far 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 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. 考查重点 设空及选项类型 主题句 过渡句 细节句 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. Ø 主要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。 （考试说明） Part 1 : passage (≈ 240 words) Part 2 : choices (≈ 80 words) Type : exposition/ argumentation structure context logic A B C D 1 2 3 1. structure and main idea 2. details and key words 3. logic 4. check 解题步骤 S M I EL 1.______关系：and; for one thing, for another; firstly, secondly, thirdly; in the first place, in the second place; first, then/ next, etc. 2.______关系：also; what’s more; furthermore; moreover; in addition; what’s worse, to make matters worse, etc. 3.______关系：so, therefore, thus, hence, as a result; because, as, since, now that, etc. 4.__________关系：but, however, nevertheless, though, yet, otherwise, while, even if, despite, on the contrary, etc. 5.______关系：for example, for instance, such as, that is, that is to say, in other words, in fact, as a matter of fact, etc. Logic 并列 递进 因果 转折与让步 例证 Practice People worldwide are living longer. Today, most people can expect to live into their sixties and beyond. By 2050, the world’s population aged 60 and older is expected to total 2 billion, up from 900 million in 2015. Practice People worldwide are living longer. Today, most people can expect to live into their sixties and beyond. By 2050, the world’s population aged 60 and older is expected to total 2 billion, up from 900 million in 2015. While this shift in proportion (比例) of a country’s population towards older ages---known as ageing---started in high- income countries, for example in Japan, 30% of the population are already over 60 years old, it is now low- and middle- income countries that are experiencing the greatest change. 1.__________.At the biological level, ageing results from molecular (分子的) and cellular damage over time. This leads to a growing risk of disease and eventually death. 2. __________.That’s why we say there is no “typical” older person. While some 70 year-olds enjoy extremely good health, other 70 year-olds are weak and require a lot of help from others. 3. _________________.Retirement, relocation and the death of friends and partners are some of the possible reasons. For example, moving older people to a better house, which seems an admirable behavior, may do harm to their health eventually. 4._____________. Some people believe older people can be active and productive. A longer life brings opportunities, both for older people themselves and for society. They can pursue new activities such as further education or a new career. They also contribute in many ways to communities. 5. ______________.This can lead to discrimination against older people. Therefore, society as a whole needs to address the ageist attitude by developing sound policies and offering various opportunities so that older people can experience fulfilling ageing. Practice A. Nobody can ever escape from the ageing process. B. But these changes are only loosely linked to a person’s age. C. Yet the extent of their contribution depends heavily on their health. D. Beyond biological changes, ageing is also related to other life changes. E. Although ageing is a universal trend, views towards older people divide. F. However, to others, older people are weak, dependent, and a burden to society. G. By 2050, many countries like Chile and China will have a similar rate of older people to Japan. While this shift in proportion (比例) of a country’s population towards older ages---known as ageing---started in high-income countries, for example in Japan, 30% of the population are already over 60 years old, it is now low- and middle- income countries that are experiencing the greatest change. 1.____________ A. Nobody can ever escape from the ageing process. 人 都会老 B. But these changes are only loosely linked to a person’s age.变化与年龄联系不大 C. Yet the extent of their contribution depends heavily on their health.贡献程度取决于健康 D. Beyond biological changes, ageing is also related to other life changes.变老其他原因 E. Although ageing is a universal trend, views towards older people divide. 看法不同 F. However, to others, older people are weak, dependent, and a burden to society. 其他人看法： 消极 G. By 2050, many countries like Chile and China will have a similar rate of older people to Japan. 中智与日本比例相似 G At the biological level, ageing results from molecular (分子的) and cellular damage over time.This leads to a growing risk of disease and eventually death. 2.______________. That’s why we say there is no “typical” older person. While some 70 year-olds enjoy extremely good health, other 70 year-olds are weak and require a lot of help from others. A. Nobody can ever escape from the ageing process. 人 都会老 B. But these changes are only loosely linked to a person’s age.变化与年龄联系不大 C. Yet the extent of their contribution depends heavily on their health.贡献程度取决于健康 D. Beyond biological changes, ageing is also related to other life changes.变老其他原因 E. Although ageing is a universal trend, views towards older people divide. 看法不同 F. However, to others, older people are weak, dependent, and a burden to society. 其他人看法： 消极 G. By 2050, many countries like Chile and China will have a similar rate of older people to Japan. 中智与日本比例相似 B 3. _______________.Retirement, relocation and the death of friends and partners are some of the possible reasons. For example, moving older people to a better house, which seems an admirable behavior, may do harm to their health eventually. A. Nobody can ever escape from the ageing process. 人 都会老 B. But these changes are only loosely linked to a person’s age.变化与年龄联系不大 C. Yet the extent of their contribution depends heavily on their health.贡献程度取决于健康 D. Beyond biological changes, ageing is also related to other life changes.变老其他原因 E. Although ageing is a universal trend, views towards older people divide. 看法不同 F. However, to others, older people are weak, dependent, and a burden to society. 其他人看法： 消极 G. By 2050, many countries like Chile and China will have a similar rate of older people to Japan. 中智与日本比例相似 D 4. _____________________Some people believe older people can be active and productive. A longer life brings opportunities, both for older people themselves and for society. They can pursue new activities such as further education or a new career. They also contribute in many ways to communities. 5. ________________This can lead to discrimination against older people. Therefore, society as a whole needs to address the ageist attitude by developing sound policies and offering various opportunities so that older people can experience fulfilling ageing. A. Nobody can ever escape from the ageing process. 人 都会老 B. But these changes are only loosely linked to a person’s age.变化与年龄联系不大 C. Yet the extent of their contribution depends heavily on their health.贡献程度取决于健康 D. Beyond biological changes, ageing is also related to other life changes.变老其他原因 E. Although ageing is a universal trend, views towards older people divide. 看法不同 F. However, to others, older people are weak, dependent, and a burden to society. 其他人看法：消极 G. By 2050, many countries like Chile and China will have a similar rate of older people to Japan. 中智与日本比例相似 E F Do exercises on the Learning Guide trying to use what we've learned today.