It can be learned from the passage that ______ .

A．impolite to visitors
B．welcoming to visitors
C．tired of visitors
D．impatient to a patient

A．find out what its people are like
B．argue in favor of this country and the language
C．know the country and its people better
D．like its inhabitants and their language

A．from second-hand information
B．gathered from other sources than from its inhabitants
C．gained from the arguments about the country
D．different from what one had before the travel