单项选择题

The business-to-business Internet revolution excludes_________.

A．cutting down cost of sales
B．speeding distribution of commodities
C．increasing productivity of the companies
D．changing the structure of the companies

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单项选择题

It is suggested by the author that in the new e-business environment _________.

A．all companies will benefit a lot from e-business
B．most companies will go bankrupt because they don't know how to do e-business
C．only those companies that have conducted business online for a long time can succeed
D．the companies that have succeeded in traditional business will have to face big challenges

单项选择题

The word demographic (Line 4, Para. 1 ) means_________.

A．statistics of human
B．surroundings study
C．accumulation of human
D．development of human