According to the passage, which of the following words can be used to describe an ambassador's work

A．an example for the average citizen to follow
B．an official with some privileges
C．an agent involved in espionage activities
D．an ordinary person just like the other citizens

A．People may not see the significance of certain new technologies immediately after they appear.
B．It may take several years for people to realise the impact of new technologies on our culture.
C．New technologies are likely to make it difficult to preserve valuable information.
D．New technologies will enable us to have access to more valuable information.