ответ:Using energy has been a key issue in the process of the development of our human society since the old times when people started to control fire. But one of the most prominent sources that changed the life of the whole world was the discovery of the most efficient energy source – the electricity. In our modern world electricity is used for industry and agriculture, communication and transportation, and for everyday use.
The development of electricity dates back to the late 17th century and the great discovery of the power source of energy was made by William Gilbert. A great number of further important discoveries were made over the next two centuries – among them are a light bulb and electromagnetic induction principle. The start of the electrical industry began in 1881 when the first power station in the world was constructed at Godalming in England. Then in 1882 the great inventor Thomas Edison and his Edison Electric Light Company started their first steam-powered station in New York. That was the beginning of the new era of electricity that changed the way people lived. By 1890 there were thousands of power systems in Europe and the USA.
1.Without any reason, the customer returned the goods that we had delivered (deliver) . 2.Before Ellen could say anything, Cindy had hung up (hang up) the phone.
3.When William was employed, I had already worked (work / already) here for three years.
4.I had just started (start / just) to type the letter, when the phone rang.
5.When I sent the mail, I realised that I had forgotten (forget) to attach the file.
6.Sue and Tom are best friends, though before the meeting last month they had not even known (know / not even) each other.
7.Catherine had not met (meet / not) Phil Brown before the trade fair in May.
8.We spoke about the conference that had taken place (take place) the week before.
9.After the meeting I thanked Misses Last, who had managed (manage) everything.
10. Had you gained (you / gain) experience in that field before you started to work for us?
ответ:Using energy has been a key issue in the process of the development of our human society since the old times when people started to control fire. But one of the most prominent sources that changed the life of the whole world was the discovery of the most efficient energy source – the electricity. In our modern world electricity is used for industry and agriculture, communication and transportation, and for everyday use.
The development of electricity dates back to the late 17th century and the great discovery of the power source of energy was made by William Gilbert. A great number of further important discoveries were made over the next two centuries – among them are a light bulb and electromagnetic induction principle. The start of the electrical industry began in 1881 when the first power station in the world was constructed at Godalming in England. Then in 1882 the great inventor Thomas Edison and his Edison Electric Light Company started their first steam-powered station in New York. That was the beginning of the new era of electricity that changed the way people lived. By 1890 there were thousands of power systems in Europe and the USA.
Объяснение:
1.Without any reason, the customer returned the goods that we had delivered (deliver) . 2.Before Ellen could say anything, Cindy had hung up (hang up) the phone.
3.When William was employed, I had already worked (work / already) here for three years.
4.I had just started (start / just) to type the letter, when the phone rang.
5.When I sent the mail, I realised that I had forgotten (forget) to attach the file.
6.Sue and Tom are best friends, though before the meeting last month they had not even known (know / not even) each other.
7.Catherine had not met (meet / not) Phil Brown before the trade fair in May.
8.We spoke about the conference that had taken place (take place) the week before.
9.After the meeting I thanked Misses Last, who had managed (manage) everything.
10. Had you gained (you / gain) experience in that field before you started to work for us?