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單項(xiàng)選擇題

（）are Internet addresses used by Web browsers to locate I nternet resources.

A. HTTP
B. URLs
C. DNS
D. HTML

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單項(xiàng)選擇題

A user typically connects to the Internet in one of two ways： dedicated access and（）access.

A. broadcasting
B. point-to-point
C. dial-up
D. Internet

單項(xiàng)選擇題

The Internet is based on the concept of a （an）（）relationship between computers.

A. browser/server
B. client/customer
C. entity/relationship
D. client/server