nowadays intemet is very popular all over the world, especially in some big cities. do you know when the intemet was first established? built in 1960s, the internet was a crude network of a few computers which shared information. if one of the computers broke down, the whole networks would be unable to work, causing continual problems. at first, just the government had access to the internet, using it for communications among different branches. however, by 1970s the internet had been used in universities, banks, and hospitals. at the beginning of 1990s computers became affordable for common people and this affordability increased the use of the internet by people,
it is said that each day tens of millions of people log off, making it the most important part of people's life.
现在因特网在世界范围内非常流行，特，别是一些大城市更是如此。你知道因特网是在什么时候建立的吗?建立在二十世纪六十年代的因特网是少许计算机分享信息的原始网络。如果一台计算机坏了，整个计算机网络就停止工作，这