单项选择题

At first, the ______ of color pictures over a long distance seemed impossible, but, with painstaking efforts and at great expense, it became a reality.

A．transaction
B．transmission
C．transformation
D．transition
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单项选择题
I only caught a ______ of the letter, so I can't remember where it is from.
A．glance
B．glare
C．gleam
D．glimpse
单项选择题
The documentaries were ______ great interest to them.
A．/
B．to
C．in
D．of
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