单项选择题

Hancock's study focuses on ______.

A．the consequences of lying in various communications media
B．the success of communications technologies in conveying ideas
C．people's preferences in selecting communications technologies
D．people's honesty levels across a range of communications media
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单项选择题
It can be inferred from the passage that ______.
A．honesty should be encouraged in interpersonal communications
B．more employers will use emails to communicate with their employees
C．suitable media should be chosen for different communication purposes
D．email is now the dominant medium of communication within a company
单项选择题
According to Hancock, the telephone is a preferable medium for promoting sales because ______.
A．salesmen can talk directly to their customers
B．salesmen may feel less restrained to exaggerate
C．salesmen can impress customers as being trustworthy
D．salesmen may pass on instant messages effectively
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