Areas with no source of electricity remain in darkness until the comes up, because street lights need a power supply. British firms offer new appliances, such as solar-powered street lights. They work by using energy accumulated during the day from a solar panel. The batteries are being charged during the day and then it's power is used for lighting. The system can be used for one individual light or a number of them. In the south of Saudi Arabia a motorway tunnel miles from any power supply is lit day and night by solar-powered devices. The advantages of sun-powered lamps are that they can bring light to areas distant from any other power supply and that they do not pollute the environment.
comes up, because street lights need a power supply. British firms offer new appliances, such as solar-powered street lights. They work by using energy accumulated during the day from a solar panel. The batteries are being charged during the day and then it's power is used for lighting. The system can be used for one individual light or a number of them. In the south of Saudi Arabia a motorway tunnel miles from any power supply is lit day and night by solar-powered devices. The advantages of sun-powered lamps are
that they can bring light to areas distant from any other power supply and that they do not pollute the environment.
1. Where did you take the book from?
Откуда ты взял эту книгу?
2. Peter always kisses his children good night.
Питер всегда целует своих детей перед сном.
3. After supper my sister will go for a walk.
После ужина моя сестра пойдёт гулять.
4. We visit our grandparents very often.
Мы очень часто навещаем наших дедушку и бабушку.
5. My friend wrote to me very often last year.
Мой друг часто писал мне в году.
6. He was a pupil twenty years ago.
Он был учеником двадцать лет назад.
7. He doesn't want to become a doctor.
Он не хочет становиться доктором.
8. I will not swim tomorrow.
Я не буду плавать завтра.