1.Закончите предложения, используя данные ниже слова, при необходимости меняя их грамматическую форму To provide, to refer, strong, to invent, to be, to run, to transfer, to charge, to use, liquid, to coat. 1. The first battery … in 1800 by Alessandro Volta. 2. Near the end of the 19th century, the invention of dry cell batteries, which replaced … electrolyte with a paste, made portable electrical devices practical. 3. In the modern sense of the term, a battery is a device that … a current by means of an electrochemical reaction, wherein electrons … from one chemical to another. 4. However, the original usage of the term not to an electrochemical cell but to a set of linked Leyden jars, which, in the 18th century were used by scientists as a means of storing charge. 5. Leyden jars … the first capacitors, and basically consisted of a glass jar whose inner and outer surfaces with metal foil, and had an … electrode through its center. 6. They could … with a static generator, and … by touching a conductor to its electrode. 7. Scientists could obtain … discharges by linking the electrodes of multiple jars together. 8. It was Benjamin Franklin who, in 1748, first … the word "battery" to describe a similar assembly of glass plates with lead sheets pasted on either surface.
People do usually say that nature is our mother. It gives a person everything that is necessary for life, even though we don't always appreciate its gifts. What could be better than the warm sun, majestic mountains, and blooming trees in the spring? The world of nature is very rich and varied. There are hundreds of thousands of species, many of which we've never seen in our life.
We all used to live in a world that seems to be built by ourselves. We live in big houses equipped with high-tech consumer devices; we are able to travel long distances using cars, trains, and planes. We are able to know what is happening thousands of miles away, over the Internet or television. But all of this is secondary. We use the knowledge of the laws of nature and its power to create all these technologies anyway.
Certainly, you cannot live fully if you do not have the opportunity to bask in the summer sun, enjoy the fresh morning air, breathe the scent of roses, see billions of stars high in the night sky. Some may disagree, but all of us need these simple pleasures from time to time. People like to spend their weekend and holidays outdoors so that communication with nature helps them to relax and gather strength to solve important problems in our "human" world.
It is very frustrating that people are fascinated by the development of new technologies that often damage the nature. Our activity causes the pollution of the environment, climate changes, extinction of animals and plants. Years ago it was not very noticeable, but now the people in the big cities just cannot breathe.
Remember that by harming nature we make ourselves worse too. So we cannot be indifferent and have to keep wealth and beauty of our nature.
Nowadays television is one of the most common ways of entertainment – cheap, convenient and easy to get. The variety of TV channels and programmes is almost unlimited: it seems that everybody can find something to enjoy. But since its discovery back in the 1920s, television has always been one of the most arguable things. Is TV a friend or a foe for us?Watching TV is one of the most popular pastimes for a modern teenager. Everything you need to do is just set yourself comfortably in a coach and turn on your telly. Millions of families spend their evenings in front of the blue screen. People watch TV shows or films, discuss the latest news and enjoy the time spent together with their nearest and dearest. The importance of a close-knit family for a teenager cannot be overemphasized and TV is one of the ways to bring a family together.It should be mentioned that not all people have the same interests. Somebody likes watching football but the others prefer soap operas or comedies. It is quite common nowadays to have several TV-sets at home and each member of the family can enjoy his favourite show and spend some time just with himself.