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1 Yes,I do I have a bicycle.

2 My parents gave it to me last year.

3 No.it isn't.It's not difficult to ride it because I'm a good bike-rider.

4 Usually I ride it from spring till autumn.

5 I like it because I can spend much time in the fresh air when I ride it.

The history of the Internet began with the development of computers in the 1950s and the emergence of scientific and applied concepts of global computer networks almost simultaneously in different countries, primarily in scientific and military laboratories in the United States, Great Britain and France. The principles of the Internet were first applied in network ARPANET, created in 1969 by order of the American agency DARPA. Using the developments of ARPANET, in 1984 the US National Science Foundation created the NSFNET network for communication between universities and computing centers. Unlike the closed ARPANET, the NSFNET connection was fairly loose and by 1992 more than 7,500 small networks were connected to it, including 2,500 outside the United States. With the transfer of the NSFNET backbone to commercial use, the modern Internet emerged.