The small-world theory has a lot to do with math. The theory assumes (假定) that each person knows 100 people. Each one of those 100 people knows 50 different people. Each of those 50 people knows another 50 people, and so on. When someone continues the calculation to six degrees, it is like this: 1005050505050 = 31.25 10 .This number is greater than 31 billion (a billion = a thousand million). There are over 6 billion people in the world. These numbers show it is possible that six degrees of separation could include everyone in the world.
Does the small-world theory work? No one has ever proved it. Maybe the theory just invites people to think a little more about their places in the world. (08北京)
1. Ben is two degrees away from ______.
A.Jimmy Carter
B. John Carter
C. Amy
D. Mark
2.What is the meaning of degrees of separation in Paragraph 2?
A. The chain to connect people.
B. The relations between people.
C. The steps of knowing strangers.
D. The separation between strangers.
3.What is the small-world theory mainly about?
A. How far Ben is away from Dr. King.
B. How many people one can get to know.
C. How people are connected in the world.
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