单项选择题

His ______ will be invaluable to understanding technological challenges the BBC is facing.

A．fantasies
B．expertise
C．ideology
D．humanities
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单项选择题
In those days, dental equipment was ______ and a visit to the dentist was a painful experience.
A．bizarre
B．advantageous
C．primitive
D．unique
单项选择题
The ______ of schools, stores, hospitals, and so on is an important factor when purchasing a house.
A．publicity
B．proximity
C．purity
D．probability
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