Hi everyone. Guess what? My latest IELTS book has just come out: IELTS Listening (see the above picture). It was really difficult to write, actually, because it required lots of recordings (unlike the other books).

Anyhow, with this book, I complete ALL the IELTS/English skills. Here’s a picture of all these IELTS books.

That’s SEVEN books in all – which is a huge intellectual effort. If you carefully read through all of these books, doing every exercise, then ….. well, your IELTS score would be amazing! However, it is obviously better to have me as the teacher, helping through these difficult skills. And on that subject ….

– the IELTS Writing/Listening Course starts Monday July 26 (MWF night).

-the IELTS Speaking Course starts Thursday 29th (every Thursday).

Contact me for details. Go to www.aisielts.com and click on ‘Contact/Registration’ Or just click here. Or you could line me directly, on 

teacherandrewais

Hope to see you in my class, but it’s online (using Zoom) for now. To tell the truth, I’m getting used to Zoom now, and the online classes have some advantages (such as you not needing to travel anywhere). Why don’t you register for a FREE observation, and see for yourself.

Deep Ocean Life

The previous reading examined how deep, dangerous, and difficult it is to get to the bottom of the world’s oceans. Let’s keep thinking about this, but more specifically about the creatures which live down there.

For a start, let’s consider humanity’s relationship to the bottoms of the oceans. This area is so distant from human existence that for decades many countries dumped nuclear waste there. America, Russia, China, Japan, and New Zealand, and nearly all the nations of Europe freely threw drums of this stuff into the water, to sink out of sight, out of mind. After almost 50 years, this practice was banned in the 1990s, yet hundreds of thousands of barrels filled with radioactive gunk still lie at the bottom of the ocean, and we can only hope the long-term effects will be small.

The fact the human beings actually performed such horrible acts shows just how psychologically disconnected we are from the ocean depths. Even its biggest inhabitants, such as the blue whale (the biggest creature ever to have lived – look at the above picture!!!!!), which comes regularly to the surface to breathe, still has many mysteries, and is very difficult to film. As for creatures which never comes to the surface, such as the giant squid, they are still largely unknown – in fact, scientists now agree that there are still many millions of animals living in the deep sea which we haven’t discovered.

We are, actually, still largely ignorant about the ways eco-systems work in the ocean. A good example of this ignorance is in the Southern Ocean – that is, the ocean around Antarctica. Being so cold, rough, and lacking in sunlight, by any reasonable understanding, this area could not support much life, but it most certainly does. There are about 15 million crab-eating seals, four million Adelie penguins, two million Weddel seals, and half a million emperor penguins all living happily enough in an area where we, human beings, would struggle to survive. Such a top-heavy food chain would simply seem impossible to exist, but it is there, and somehow it all works. It is an interesting fact that scientists still don’t really know why.

Question Time

When was the dumping of radioactive waste banned? ……………………..……………

What is the biggest living animal? …….……………..………

Why should the Southern Ocean be unable to support much life? ……………………….……….…….

Which creature there is the most numerous?  ………………………………

Word-Learning Time

Do you know the meaning of the underlined words?

A drum

A barrel

Gunk

Psychological

An inhabitant

A food chain

By the way, you can find out more about me at www.aisielts.com .

The Oceans & Seas

Did you read the previous post? Did you realise what material I was referring to? Yes, it is water! In fact, water is SO important, I thought I would finish this set of readings by looking at water in depth. [There’s a joke there; do you get it? ‘In depth’? Water? Get it?]

So, let’s continue thinking about water.

All the water on the earth is in a closed system, which means that the total amount cannot increase or decrease – and this water exists in …

– the oceans and seas, as salt water,

– lakes, rivers, dams and reservoirs, as fresh water,

– ice sheets, mostly in Antarctica, as ice,

– clouds, or as water vapour in the sky.

The overwhelming bulk (97%) of the earth’s water lies in its oceans – hence the above picture. There are three major oceans: the Pacific, the Atlantic, and the Indian. The Pacific is by far the biggest and the deepest, and consequently holds over half of all the water on the earth.

We know about the surface of the ocean, where the friction of the wind over large areas causes constant motion in the form of waves which we can all see (again, the above picture), but it is interesting to note that we, human beings, still know very little about the deepest parts of the ocean. These parts are called the ‘abyssal plains’, and cover more than half of the planet’s surface, and are still very mysterious places. The reason for this is that it’s dark and extremely difficult to get down there.

The biggest problem being in the depths of the ocean is the pressure of the water. ‘Submersibles’ [the general name for craft that go down to the bottoms of the oceans] are hollow, and if there are people inside, need a supply of oxygen. They also need to be controlled carefully and need scientific instruments, which presents great technical challenges.

The deeper the submersible goes, the greater the weight of water which rests on top of it. If you go down to the deepest part – the Mariana Trench, near the island of Guam in the Pacific – the pressure of that water is enormous, about eight tons per square inch (which is over 1000 times greater than at the surface). This is similar to having 100 large elephants standing on your head, and just one reason why this spot has only been visited by people four times.

Question Time

Can you explain the double meaning of ‘in depth’ in the first paragraph? ……………………..……………

Where, specifically, is most of earth’s water? …….……………..………

What is the greatest challenge about travelling to the bottom of the ocean? ……………………….……….…….

What is the name of the deepest part?  ………………………………

Word-Learning Time

Do you know the meaning of the underlined words?

A dam

A reservoir

Vapour

To be mysterious

To be enormous

By the way, you can find out more about me at www.aisielts.com .

[You Guess What This Is About]

Let’s think about dihydrogen oxide. This material can often kill you, or hurt you badly (depending on what people have done to it previously), but it is absolutely necessary to keep the human body going. This material can combine with other material to make something very nasty which, if thrown into your face, will burn you horribly. If you have enough of this material together in one place, and make it move a lot, it can cause huge problems, destroying buildings and killing thousands of people. It does this everywhere, all over the world, every year.

This material has no taste, yet people love the taste. It has no form – that is, it is formless – yet people love watching it and the way it acts. This material is so ordinary, yet people travel thousands of miles (and spend thousands of dollars) just to be beside it. Every year, tens of thousands of people die in it, yet millions of people are always eager to be immersed in it.

This material comes in three main states, but we mostly want it and like it and absolutely depend on it in just one of those states. Without this material, the human body quickly breaks down and goes into crisis. Take this material completely away and within a few days, people’s lips will crack and shrink and all but disappear. The nose will do the same, the body will weaken, and a painful death soon follows.

Yet, despite the body’s desperate need for this material, the overwhelming majority of it on earth is deadly poisonous, and if it is put into the human body, seizures, unconsciousness, brain damage, and death will quickly follow.

So, what material am I referring to? The next post will confirm your guess.

Question Time

What is the chemical name for this material? ……………………..……………

How far will people travel to be beside this material? …….……………..………

Without this material, how many days can we live? ……………………….……….…….

What proportion of this material is poisonous to people?  ………………………………

Word-Learning Time

Do you know the meaning of the underlined words?

To be nasty

To immerse

A state

A crisis

A seizure

By the way, you can find out more about me at www.aisielts.com .

Mount Everest

The above picture shows Mount Everest. This is the Earth‘s highest mountain, with its peak being 8,848 metres high. The mountain was given its name by the British, who controlled India at the time when this new mountain was discovered. Since it is the highest, many people want to climb it – yet it is a very dangerous mountain to climb.

When Everest was first discovered, and its height calculated, British climbers were the first to get there. In 1921 they hiked to the mountain to take photographs. The next year, in 1922, they tried to climb it, reaching above 8000 metres for the first time ever – although seven helpers were killed by an avalanche.

This same British team returned in 1924 for another try. After failing a few times, two climbers, named Mallory and Irvine, made a final try. They started from a camp high on the mountain, heading for the top, but were never seen alive again. No one is quite sure whether they reached the top or not. 75 years later, in 1999, some climbers found the body of Mallory, but they did not find Mallory’s camera and could not prove whether he got to the top or not.

For many years after Mallory and Irvine, it seems that Everest was simply too high for human beings to climb. Yet technology got better, and in 1953, two climbers – Hillary and Tensing – with more advanced oxygen equipment and warmer clothing, finally reached the top. Now, in this modern age, many people can climb Mount Everest with the help of climbing companies, which offer support climbers, all the food and equipment, and who put in special ropes along the climbing path to make it safer. This has made climbing Everest very popular – but people still die, regularly, on this dangerous mountain. 

Question Time

Which people were the first to try to climb Everest? ……………………..……………

How many people died when people first tried to climb it? …….……………..………

Do we know if Mallory got to the top of Everest? ……………………….……….…….

When did the first person get to the top? ……………………………….……………….

What has made climbing Everest popular these days?  ………………………………

Word-Learning Time

Do you know the meaning of the underlined words?

To discover

To calculate

To hike

An avalanche

A camp

To prove

Technology  

Equipment    

By the way, you can find out more about me at www.aisielts.com .

Mountain Ranges

A mountain range is a place where there are many mountains, usually in a rough line. But they are certainly not regularly arranged but usually mixed and broken, with a variety of rock types.

But why do we even have mountains? The answer is that they are a result of the movement of the pieces of the earth’s outer layer. These pieces move slowly, hitting each other, pushing some parts up, other parts down, and sometimes creating volcanoes. These volcanoes can grow higher, forming their own mountains. This has happened a lot around the Pacific ‘Ring of Fire’.

The longest mountain range in the world is the Andes in South America, at 7,000 kilometres, but it is the Himalayas in Central Asia which contain the highest mountains, including Mount Everest, highest of them all. [See the above picture].

Although high mountains look wonderful in photographs, they are not particularly nice places. The weather on mountains becomes colder as you go higher. The air gets thinner, and there is less greenhouse effect holding in the heat. For this reason, the highest mountains have snow, sometimes all the time, and many important rivers in the world begin from the melting snows in higher mountain ranges.

With such cold weather, and the unpredictable weather, people usually avoid living on mountains. Another reason is that the ground is not flat, which makes it difficult to grow food or raise animals. However, in recent times, tourism has become important to many villages in the higher mountains.

For the really high mountains, the activity of mountain climbing helps generate income for the local people who live there. Climbers feel that getting to the top of a really high mountain is a very special achievement, despite the dangers of extreme weather, low oxygen levels, and falling from the steep mountain slope.

Personally, I don’t intend to ever go that high, but I agree that these mountains certainly look beautiful, from a safe distance, right.

Question Time

1. How are mountains formed? …………………………………………………….…….……

2. What is the world’s longest mountain range? ………………….………………………….

3. Why does it get colder as you go higher? …………………………………..…….……….

4. Why don’t people like living on mountains? ……………………………………………….

5. Why is raising animals difficult on mountains? ……………………………………………

Word-Learning Time

Do you know the meaning of the underlined words?

Regular

Volcano

Greenhouse

To melt

To be unpredictable

Extreme

To be steep

A slope                

By the way, you can find out more about me at www.aisielts.com .

New Online IELTS Course

What day?  Mon./Wed./Fri. IELTS Writing

When? Beginning this Monday (14th)

What time? 7.00 pm to 10.00 pm

Yes, this coming Monday night, I will begin a special discounted (= cheap) online IELTS Writing Class. All you need is a computer, my writing books, and Zoom ..etc.. and you can join. To repeat, this will be a special discounted course.

Contact me for details. Just go to my website: www.aisielts.com  .

Hope to see you on my computer screen this coming Monday night, right!

Computers

A computer is a machine that can be programmed to do something by itself. They have one main part to receive the orders and information, and another part to remember and store the information. Well, this sounds simple, but, of course, it isn’t.

The first computers did not use electricity. They just used mechanical parts which connected together to do mathematics – for example, to allow ships to work out where they were, and to predict the movement of the planets.

An Englishman, Charles Babbage, is now considered the ‘father of the computer’. He made the first programmable computer in 1833. Information was given to the machine using special cards with holes in them. For the output, the machine would have a printer and a bell. The trouble was, the machine was about a 100 years ahead of its time. All the thousands of parts had to be made by hand – and the machine could not be constructed in Babbage’s lifetime.

In the 1940s, electronics were used for these machines, and suddenly these those calculations could become faster and better. However, the first electronics were not primitive by today’s standards, so the first electronic computers were the size of large rooms. Now, in this modern age, computers used integrated chips, or ICs, and this makes them billions of times faster and stronger than the early mechanical machines. This allows computers to become smaller and more convenient, and with the development of better batteries, now everyone has a ‘personal computer’ – often in the form of a laptop which they can carry around. Computers are now part of the information age. Charles Babbage would certainly have been happy to know about this.

Question Time

What did the first computers use? …………………………………………………………

Who made the first computer? ……………………..……………………………………….

What invention allows computers to become faster? …………………………………….

What invention has made them even faster today? …………..………………………….

What final invention has allowed us to carry computers around? ………………………

Word-Learning Time

Do you know the meaning of the underlined words?

Mechanical

To predict

To program  

To construct 

Calculations 

To be primitive

Convenient   

Batteries       

By the way, you can find out more about me at www.aisielts.com .

In this pixnet blog, I don’t normally show my thoughts written in Chinese, but this article, which has been been printed in an online magazine, was translated for me. I had a friend check the translation, and there are indeed some unclear parts, but I hope the main meaning gets through.

背英文有用嗎？雅思考官幫你解答

歷史背景

在 1960 年代，教授語言的方法被稱為“語法–翻譯–記憶”。這種方法看起來像教任何人都可以，大多數老師都很高興  ，   因為它很容易教。它只需要很少的努力、培訓、技能或準備，你只是一頁一頁地翻閱教科書。問題是，每個人都開始意識到它根本沒有什麼作用。

時代變遷

在 1970 年代，世界經濟開始共同成長，人們開始更多地遷移，組織變得全球化。學習語言變得更加重要，教育專家開始質疑為什麼沒有人透過這種“語法–翻譯–記憶”來學習很多東西。最後，效果更好的新方法成為主流，正式的教學課程和資格證書成為必要。

讓我們搬到台灣

你可能會看到我在這裡給你們的建議。這種“背誦”方法在亞洲有著悠久的傳統，尤其是在準備考試方面。學生習慣於背誦，並且（重複一遍），任何人都可以將其提供給學生，並稱自己為老師，並製作大量廣告以讓您相信這種方法的有效性。

現在讓我們進入雅思考試

我的專業領域是為學生準備雅思考試，所以讓我談談這個部分。在口語考試中，考生必須回答各種問題。在寫作測試中，考生必須針對兩個任務進行寫作。具體問題是不可預測的，但一般問題類型是可預測的，所以考生習慣使用背誦，但這行得通嗎？我們需要知道答案。

開始分析

雅思考試中的口語和寫作是由人類（不是機器人或計算機）來評的。

換句話說，

• “在口語考試中聽到所有這些記住的答案是否會讓你給出更高或更低的分數？”

• “閱讀寫作答案中那些記住的部分是否同樣讓你給更高或更低的分數？”

你認為這些考官中的每個人都會說什麼？嗯，想想這個。雅思考官…

1. 是訓練有素、經驗豐富的英語教學專業人士，他們的理論訓練是現代的，完全拒絕死記硬背作為一種學習方法。

2. 在文化上是西方的，重視邏輯、連貫性、相關性和真理。

3. 回答會反映 邏輯、連貫性、相關性和真實性

那麼，您認為雅思考官會如何看待通常不合邏輯、不連貫、不相關，並且（顯然，因為它被記住）不真實的聽力或閱讀？

做個總結

在選擇雅思準備補習班或教師時，您的工作是弄清楚什麼是真什麼是假。想想這篇文章的信息，並提出所有相關問題。如果你打算參加雅思考試，祝你好運！

If you want to know more about me, go to www.aisielts.com .

Electronics

Electronics is all about controlling electrical energy. Scientists and inventors have made many kinds of small objects – called components – which control this energy in different ways.

So, what are these components? They are single objects with two or more wires coming out from them. These wires all connect with other wires, and so all the parts fit together to make an electronic ‘circuit’. Yes, it can be very complicated, but these circuits can do amazing things. 

Putting together all these little components takes time. Another problem is that each component produces heat, and because everything is so close together, the circuits can become very hot, which is why, for example, larger computers have fans. 

But by the middle of last century, scientists began to realize that they could make another small object do the same thing as electronic circuits, all inside a single piece of this material. The material is called silicon, and the object was called a ‘chip’. The first chips could only replace a small number of electronic components – but it was still an amazing invention, since it allowed the circuits to become smaller. Many scientists became interested, and the chips become better and better, and smaller and smaller. Today, millions of electronic components can be inside just one single chip – now called an ‘integrated chip’ or IC. {See the picture above.]

ICs are very small, last a long time, can be produced quickly, and easily connected together. Even better, they cost less, and use less power. Thus, they have replaced the traditional electronic circuits almost completely, being in almost all electronic equipment today – indeed, they have completed changed the world we live in. Computers, mobile phones, and other home machines are now part of modern society, and all because of integrated circuits.

Question Time

What is the name for the small electronic parts? ………………..…………..……………

When they are all connected together, what are they called? ……………….….….…..

What is one problem with these things (put together)? ………………………….……….

What was the biggest advantage of the first ‘chips’? ……………………….………..….

What other advantages do they have? ……………………………………………………

Word-Learning Time

Do you know the meaning of the underlined words?

Electrical

A component

A wire

A circuit

A fans

To be integrated

By the way, you can find out more about me at www.aisielts.com .

Tobacco

Tobacco is a product prepared from the leaves of the tobacco plant. Dried tobacco leaves are mainly smoked as cigarettes, but the product can be chewed, or absorbed through the nose. Scientists now know that tobacco can cause many diseases, including several types of cancers. If people didn’t smoke, they wouldn’t die so prematurely. Thus, tobacco is considered the world’s single greatest cause of preventable death.

Tobacco came from the Americas: Central and South America, and had been used by the local people there for thousands of years. When the people from Europe first arrived in the Americas, they noticed the local people smoking tobacco. These Europeans tried it themselves, and eventually decided they liked it. Yet the tobacco smoke of that time was strong and bitter, and could only be smoked a little at a time. New varieties of tobacco, which were not so strong, were soon developed, and this led to the product becoming fashionable in Europe. Thus, tobacco production eventually became a major industry.

However, tobacco is a form of drug. It contains nicotine, which is addictive – that is, makes people want to keep smoking. Many plants contain nicotine, which helps stop the plant being attacked by insects, but tobacco contains much more of this substance than most other plants. This led to the formation of anti-smoking groups [See the picture above, which is obviously designed to warn people of the dangers of smoking]. The advertising of cigarettes was eventually banned, and smoking began to fall in the developed world. Yet, it has continued to grow in the developing world, which has the greatest population. This means that the production of tobacco in the world has generally been increasing, with China being the greatest producer by far.

Question Time

Where did tobacco originally come from? …………………………………………………

What was the first tobacco smoke like? ……………………………………………………

What made it become fashionable in Europe? …………………….…………….……….

What drug does tobacco contain? …………………………………..………….………….

Where has smoking continued to grow? ………………………….……….………………

Word-Learning Time

Do you know the meaning of the underlined words?

Ambiguous

Preventable

Bitter 

Fashionable  

Addictive

To be banned

By the way, you can find out more about me at www.aisielts.com .

Sugar Cane

Sugarcane, or sugar cane, is one of the several species of tall plants which originated in South Asia, and is now grown widely for sugar production. Here is an interesting fact: sugar cane is actually a species of grass – the largest grass in the world! Here’s another interesting fact: sugar is the largest crop in the world in terms of production, with almost 2 billion tons of the stuff produced each year. Clearly, the world has a ‘sweet tooth’.

The Persians, followed by the Greeks, discovered the famous “grass that produces honey without bees” in India around 500 BC. They began to plant and grow the crop, but in those times, it was a rare and expensive product. In the 18th century, sugarcane plantations [as in the above picture] began in many parts of the world, and the need for workers caused great movements of people, including black slaves from Africa. This is because harvesting sugar cane needs many people – that is, it is very labour intensive. Even today, half of the sugar produced in the world is still harvested by hand.

In the developed world, mechanical harvesting is used, where special machines cut the cane and stack and load it into boxes. Brazil leads the world in sugarcane production, by far, with India second, and China third. But after getting the sugar cane, it must go through another long process. This first involves crushing it, to remove the juice. This juice is then refined into raw sugar, which is further refined into brown sugar, which can be refined yet again to white sugar – which is the sugar most people are familiar with.

Question Time

What sort of plant is sugar cane? ………………………………..…………………………

How much sugar is produced each year? …………………………..……………..………

Where did sugar come from in the very beginning? ……………….…………….……….

Why did sugar production cause people to move from country to country? …………..

Which country produces the most sugar? …………………………………………………

Word-Learning Time

Do you know the meaning of the underlined words?

To originate

A crop

To be labour intensive

To harvest

To crush       

By the way, you can find out more about me at www.aisielts.com .

Cotton

Cotton is a soft, fluffy and grows around the seeds of cotton plants. This plant grows naturally in many parts of the world, and its usefulness was realized by many cultures – in fact, it was used even in prehistoric times. However, it was only with the invention of modern machinery that it could be cheaply produced, making it now one of the most popular materials for clothing.

Cotton is a very important product throughout the world. However, many farmers in developing countries receive a low price for their cotton, or find it difficult to compete with developed countries. China is the world’s largest producer, but uses most of its production for its own purposes. The United States has been the largest exporter for many years, with India a close second.

Historically, in America, cotton was grown on large plantations, where black slaves picked the material by hand, working long hours in very bad conditions. Nowadays, most cotton in the United States, Europe, and Australia, is harvested mechanically – that is, by machines, yet cotton continues to be picked by hand in most developing countries.

Although cotton remains very popular, there are now many chemically-produced fabrics, such as nylon and polyester, which have caused the demand for cotton to fall into recent decades.

Question Time

When was cotton first used? ………………………………..…………………..…….……

What allowed it to be produced cheaply? ………………………………………….….…..

Who produces the most cotton? ……………………………………………..……….……….

In which parts of the world is cotton still picked by hand? ……………………………….

What materials have affected cotton production? …………………………..……………

Word-Learning Time

Do you know the meaning of the underlined words?

Fluffy

Prehistoric

To compete  

To export

A fabric        

By the way, you can find out more about me at www.aisielts.com .

Galileo

Galileo was born in 1564 in Italy, and died there in 1642, aged 77 years old. You might not know much about him, but the great scientist Einstein called Galileo the ‘father of modern science’, and most other scientists agree with this.

So what did Galileo do? Science was very simple in those days, and no one knew much about the stars and planets. Galileo improved the telescope, and began to seriously study the stars and planets, and made many new discoveries. He was one of the first to say that the earth moved around the sun, rather than the sun moving around the earth, and to say that the laws of nature could be based on mathematics. He began using mathematics and performing experiments to make some theories about the movement of objects. He began using simple machines, and invented several new ones.

All this might sound rather straightforward now, but in Galileo’s time, superstition was rife. Almost everyone believed that God made everything, and we should never question God. Galileo was one of the first men to break this tradition. He showed that people could understand the world around them through mathematics and science, and that the church could be wrong. At that time, the church was very powerful, playing a big role in society, and its members did not like the way Galileo made them seem less important. Thus, Galileo’s life was difficult, even dangerous, and he was carefully watched. 

So, although Galileo did not make any single really great achievement, he was one the first believers in the scientific method, and he set the path for others, and for this reason he is considered one of the greatest scientists of all time.

Question Time

How did Einstein describe Galileo? ……………………………………….………………

What did Galileo use to study the stars? …………………………………………..………

What did he invent? ………………………………………………….…………….……….

How did the church feel about Galileo? ……………………………………….………….

What did they do to Galileo?  ……………………………………….………………

Word-Learning Time

Do you know the meaning of the underlined words?

Telescope

Law

Experiment   

Theory

Superstition

Rife

Tradition

By the way, you can find out more about me at www.aisielts.com .

Leonardo DaVinci

Leonardo da Vinci was born in Italy, in 1452, and died in France in 1519, aged 67 – but in those 67 years, he showed his genius in very many ways. Many people now consider him to be one of the smartest people ever; however, Leonardo did not show his writings to anyone. He kept most of his notebooks a secret, and thus he did not influence other scientists.

Leonardo is known mostly as a painter. His most famous painting is the Mona Lisa, yet only 15 of his paintings are around today. This is because Leonardo experimented with different sorts of paints – and many of these paints were not good, and the paintings quickly lost their colours.

Many of Leonardo’s drawing remain in his notebooks. They show Leonardo’s imagination in science, engineering, and inventions – and reveal that he was far ahead of other scientists of his time. Leonardo drew flying machines, cars, and machines for making things. Almost none of these were constructed, however – they just remained hidden in Leonardo’s notebooks.

Leonardo worked in Italy in his younger days, as a painter and artist for the church, but later moved to France, where he continued his work for the king of France, and became famous there. The interesting thing is that, although we know about Leonardo’s life, we don’t know much about Leonardo the man. He never married, had no children, had no close friends, and wrote nothing personal in his notebooks, and no one really knows what he looked like. The picture above, which is often used to represent Leonardo, may not actually be him. Yes, Leonardo is very famous, but also mysterious.

Question Time

Did Leonardo influence other scientists? Why (not)? ……………………………………

What is his most famous painting? …………………………………………………….…..

Why have we lost many of his paintings? ………..……………………………….……….

Why are most of Leonardo’s drawings? ………………………….……….……………….

Do we know much about Leonardo’s personal life? ………………………..……………

Word-Learning Time

Do you know the meaning of the underlined words?

Genius

To influence

To experiment         

A drawing     

Imagination  

Mysterious   

By the way, you can find out more about me at www.aisielts.com .

The Tallest Building in the World

Many countries are building taller and taller buildings, since everyone wants their country to have the tallest one of all. So, things are always changing, but right now, the tallest building in the world is in a small country in the Middle-East, called Dubai – and the building is called ‘Khalifa Tower’ [See the picture above]. This building is 830 metres high. That’s almost one kilometre, straight up!

So, why did they construct this building? Dubai has a lot of oil, and this has given the country a lot of money to spend, but this oil will run out one day, so the government wants to generate revenue from other places, such as from business and tourists. One way to make businesses and people come to the country is to have a world-famous building – and being the tallest building in the world is a good start. However, the building cost a staggering $80 billion to construct – so it was certainly an expensive decision to make.

The tower was constructed by Samsung, a Korean Company, and there were many special problems involved. For a start, the temperature is very high (up to 50°C in the summer) and this causes problems due to the expansion of the metal material. Some of it had to be put together at night, when it was cooler, and special fans were used to blow away the dust and sand in the air. Here is another interesting thing: the building is so big, with so many glass windows, that it takes 40 people four months just to clean them all.

Question Time

Where is the tallest building in the world? ………………………………………………

How high is it, and how much did it cost? ………………………..……….………..…..

Why did this country decide to build this building? …………………………………….

Which company built this building? ……………………..……………………………….

Why did they do some of the work at night? ……………………….……………………

Word-Learning Time

Do you know the meaning of the underlined words?

To construct

Oil

Revenue

To be staggering

Expansion [to expand]

By the way, you can find out more about me at www.aisielts.com .