单项选择题

This passage is primarily concerned with ______.

A．a new language
B．technical terminology
C．scientific undertakings
D．popular science
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单项选择题
According to the author, Americans' cultural blindness and linguistic ignorance will______.
A．affect their image in the new era
B．cut themselves off from the outside world
C．limit their role in world affairs
D．weaken the position of the US dollar
单项选择题
In countries other than their own most Americans______.
A．are isolated by the local people
B．are not well informed due to the language barrier
C．tend to get along well with the natives
D．need interpreters in hotels and restaurants
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