1. Running is one of the best exercises of all . Next time you have to go to the store for a loaf of bread, try running instead of walking. You will be building up your leg muscles and giving your heart and lungs a good workout.

( Running )               

2. There are many ways to invest your hard-earned savings cautiously. In fact, there are so many ways that it all becomes a little confusing. One way through the confusion, which financial advisers recommend, is to know what you want to achieve, know how much risk you are prepared to take and go from there. But which way? Two common answers to this question are investment funds and investment-led insurance for the long term.

( Ways of investment)        

3. A relationship is an invisible link that brings people closer. Cooperation and trust strengthen a good relationship, and help both sides grow and prosper.

( Human relationships)             

4. The most important breakthroughs are coming in cancer, heart disease, brain afflictions such as stroke, and autoimmune diseases such as Type I (juvenile) diabetes, multiple sclerosis and rheumatoid arthritis. Here are some treatments that could reach patients within five to ten years.

( Medical breakthroughs)

B. Read the following paragraphs from Energy. Determine the topic of each by reading the entire paragraph carefully. Write the topic in the box.

1. Finding the power of fire was an important step in the changing and growing use of energy. It was probably discovered by accident when the sun made something burn — perhaps a dry tree in a hot summer. Soon fire began to be used as a source of energy. There were many things in the world which would burn and they could be found easily. There were plenty of bushes and trees and there were also pieces of black rock which would also burn; this black rock was coal. There were also pools of oil which burned.

( Finding the power of fire)
2. A lot of coal was found on the earth many years ago but most of the coal could only be found under the ground. The reason for this is that coal was made by trees which died millions of years ago. The trees sank into mud which was carried along by rivers; and the wood slowly changed into coal. The coal was buried deep in the ground by the movement of rocks, earth and plants which pressed down on it and formed different layers above it. Coal is the same as wood, therefore; but it burns much longer and produces much more heat so it is more useful as a source of energy than wood.

( Coal )
3. Oil was probably made from very small sea animals. When they died, they sank to the bottom of the sea. The weight of heavy rocks pushed all the dead bodies together and after many millions of years, they changed into oil. Like coal, oil is found deep in the earth, often in places which are very difficult to reach. Men drill into the ground to get oil.

( Oil )
4. Natural gas is also a fuel; it will burn in air. It is very often found together with oil sources, caught between the oil and the rocks. At first, when oil was discovered under the ground, the gas was not considered useful. It was seen only as one more problem in the search for oil and was burned off so that the oil could be reached more quickly. But after many years of burning off the gas, it was realized that the gas was also a useful fuel. Then gas pipelines were built under the ground so that the gas could be taken to different parts of the country. Gas can also be taken in liquid form in large lorries. But this is dangerous because if the liquid gas escapes and reaches the air it can explode.

( Natural gas )
5. A large area of the world is covered with water, most of which is always moving. It did not take very long before people began to make use of the power of water. When water falls, the force which is created is quite powerful and it is possible to turn a large wheel by this force. This wheel will then turn another wheel which can carry out a certain job such as moving two stones together to cut corn into small pieces.

( The power of water )