The Internet is a huge network of computers located all over the world that communicate with each other.

The Internet is an international collection of computer networks that all understand a standard system of addresses and commands,connected together.It was started in 1969,when the U.S.Department of Defense established a nationwide network to connect many universities.The original idea was to increase computing ability that could be shared by users in different locations and to find out what it would take for computer networks to survive a nuclear war or other disasters by providing multiple paths between users.People quickly discovered that they could exchange messages and hold electronic conferences with people far away.If somebody had something interesting on his computer,it was very easy to obtain a copy of it.Over the years,more networks joined.The first international connections,to Norway and England,were added in 1973.Today thousands of networks and millions of computers are connected to the Internet.It is growing so quickly that nobody can say exactly how many users are on the Net.

However,Internet use appears to cause a decline in people’s mental health,according to research at Carnegie Mellon University.

Even people who spent just a few hours a week on the Internet experienced more depression and loneliness than those who logged on less frequently,the two­year study showed.And it wasn’t that people who were already feeling bad spent more time on the Internet,but that using the Net actually appeared to cause the bad feelings.

Researchers are puzzled over the results,which were completely contrary to their expectations.They expected that the Net would prove socially healthier than television,since the Net allows users to choose their information and to communicate with others.

The fact that Internet use reduces time available for family and friends may account for the drop in well­being,researchers hypothesized.Faceless,bodiless “virtual” communication may be less mentally satisfying than actual conversation,and the relationships formed through it may be shallower.Another possibility is that exposure to the wider world via the Net makes users less satisfied with their lives.

“But it’s important to remember this is not about the technology itself;it’s about how it is used”, says psychologist Christine Riley of Intel,one of the study’s sponsors.“It really points to the need for considering social factors in terms of how you design applications and services for technology.”

1.When was the Internet started?(no more than 4 words)

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Many people are superstitious about numbers.They think that there are lucky numbers and unlucky numbers.

The number 13 is often considered unlucky.In some parts of the world,buildings have no 13th floor and streets have no houses with the number 13.In Japan,“4”is considered unlucky because in Japanese the word “four” is pronounced the same as the word “death”.

Japanese never give gifts of four knives,four napkins,or four of anything.

What are the lucky numbers?Seven is a lucky number in many places,and “8” is considered a lucky number in Japan and China.In China,businesses often open on August 8,and many couples register to get married at eight past eight on August 8.

Superstitions about numbers are so widespread that some people,called numerologists,make a living by giving advice about numbers.

In 1937,when the Toyoda family of Japan wanted to form a car company,they asked a numerologist if “Toyoda” would be a good name for the company.The numerologist said it would not be.He explained that “Toyota” would be a better name for the company.The family took his advice.As a result,millions of people drive “Toyotas” and not “Toyodas”.

There are superstitions about eating,sleeping,sneezing and itching.There are supersitions about animals and holidays.

There are even superstitions about superstitions.Those superstitions tell people how to reverse bad luck.

When the Japanese bump heads,they immediately bump heads again.According to a Japanese superstition,the first bump means their parents will die,but the second bump “erases” the first bump.

To reverse bad luck in general,people turn around three times,turn their pockets inside out,or put their hats on backwards.

In the United States,baseball players sometimes wear their caps backwards when their team is losing.It looks silly,but the baseball players do not mind if it helps them win the game.

Superstitions in the World

Superstitions
Places
Examples or details
__1__
number:13
Some parts of
 the world
There’s __6__in a tall building and there are no houses with __7__.
Unlucky
number:4
__4__
Four has __8__pronunciation as the word “death”;never give gifts of four knives,four napkins,or four of anything
Lucky
number:7
Many places
 
__2__:8
Japan and
 __5__
Businesses open on August 8 and __9__  are held at eight past eight on August 8
Toyota
Japan
Change “Toyoda” into “Toyota”
__3__
Japan
When the Japanese bump heads,they immediately bump heads again
The United
States
Baseball players __10__ backwards when their team is losing
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