Topic Sentences

                Driving in winter, especially on snowy, icy roads, can be less troublesome if you take a few simple precautions. First, put on snow tires if you plan to drive on snowy, icy roads very often. Second, check the amount of antifreeze in your radiator and add more if necessary.   Next, add antifreeze to your windshield washer fluid; otherwise, the fluid will freeze and possibly break the container. Finally, it is also a good idea to carry tire chains, a can of spray to unfreeze door locks, and a windshield scraper in your car when driving in winter weather.

3 (topic sentence) 2, 5, 1, 4

 

1.       A breakthrough in one of these areas will hopefully provide a means of relieving both the overstretched oil market and the environment. (One is The Topic Sentence)  2. Researchers in the automobile industry are experimenting with different types of engines and fuels as alternatives to the conventional gasoline engines. 3. One new type of engine, which burns diesel oil instead of gasoline, has been available for several years 5. A further type is the gas turbine engine, which can use fuels made from gasoline, diesel oil, kerosene and other petroleum distillates.  . 4. Finally, several automobile manufacturers are experimenting with methanol, which is a mixture of gasoline and methyl alcohol, as an automobile fuel. 6. The increasing depletion of oil reserves, along with environmental concerns, have prompted some radical developments in car design over the past few years.

 

5. Some form of written communication has been used throughout the centuries. (Five it the Topic sentence) 2. In the earliest times, people carved or painted messages on rocks. 3. In the middle Ages, heavy paper called parchment was used for writing and books were laboriously copied by hand. 1. Later on, people began to write on pieces of leather, which were rolled into scrolls. 4. With the invention of the printing press in the middle of the fifteenth century, the modern printing industry was born.

 

Exercise two

                Americans love to relax at home, but there are many different ways of doing so, here are some examples.

 

                In each countries, college age students attend a university or community college, but in some countries, the students aren’t required to go to school, like they are in the United States.

 

                People who live in a different places, than your average American, live in different types of homes, here are some examples of these places and homes.