The world's first headphones appeared more than a century ago. Quite an impressive period of existence, isn't it? Although it would seem that such a small thing, not so important in our lives detail. But if you think about it, no man lives without music, and some headphones even help to go with music through life. It turns out that the subject firmly settled in our daily routines. The appearance of the first headphones. Invented the first in the history of headphones Nathaniel Baldwin, and at home in the kitchen. He collected them from different parts of the phone, and the invention dates back to 1910. Early in his "career" headphones were used only in military activity: the radio operators, divers, etc. To the masses headphones come only after two decades after the invention. They immediately won enormous popularity among ordinary people, and with the advent of portable players their importance was overestimated. Still, after have the opportunity to enjoy their favorite music anywhere: in the transport, on the street, in cafes, etc are not disturbing other people.It is difficult to find an area of human activity where and would not use headphones. The most important role in the recording process. (изобрел Натаниэль Болдуин)
Computers have drastically changed everyone’s lives. Several decades ago people haven’t even known anything about these electronic devices, whereas nowadays even a small child can operate this machine. Almost all modern technology depends on computers, which are used for data storage: files, secret information, bank transactions and else. Computer technology belongs to the fastest-growing industry. Computers of different types and sizes are used by modern society. It is interesting that the first computer was the size of a minibus and weighed almost a ton. Whereas now it can be a small chip the size of a pin. And computer technology is not standing still, it’s rapidly progressing. Soon we might have the computers which will be built-in our glasses, earrings, and other objects. Perhaps, the next generation of computers will have the ability to talk and think just as people do. Many people find computers dangerous and time-consuming. On the other hand, computers are very fast and they seldom make mistakes. They save lots of time, and besides all the necessary information can be found on Internet. So, instead of going to the libraries or other institutions, we can simply surf the worldwide web. Another advantage is the instant possibility to send letters, whereas some time ago we had to wait for weeks and months to have them delivered. Moreover, with the help of computers and Internet, shopping has become much easier. Firstly, we can find what we exactly want, secondly we can choose the affordable price, and thirdly, we can have the chose items delivered. After all, computers have become the most useful tool in everyone’s homes nowadays and they have certainly changed our lives for the better.
1. remembered, left
2. opened, had already begun, had been explaining ?
3. did you do
4. has taken
II.
1. myself
2. himself
3. herself
4. yourself
5. ourselves
6. yourself
III
1. b
2. b
3. c
4. c
5. b
6. a
IV
1. sightseeing
2. excursion
3. sights
4. main
5. buildings ?
6. Europe