In（）programming, the user determines the sequence of instructions to be executed, not the programmer.

单项选择题The（）is a collection of computers connected together by phone lines that allows for the global sharing of information.

A．interface .
B．Internet
C．LAN
D．WWW

单项选择题（）is the sending and receiving of the messages by computer. It is a fast, low-cost way of communicating worldwide.

A．LAN
B．Post office
C．E-Mail
D．Interface