单项选择题

The five general electronic commerce categories are business-to-consumer, business-to-business, business processes, consumer-to-______, and business-to-government.

A．consumer
B．government
C．business
D．customers
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单项选择题
The identification and removal of bugs in a program is called ______ .
A．checking
B．debugging
C．revision
D．verification
单项选择题
With respect to program variables, ______ means assigning a beginning value to a variable.
A．setup
B．startup
C．initialization
D．pre-compile
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