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
The capital intended to broaden the export base and ___________ efficiency gains from international trade was channeled instead into uneconomic import substitution.
A．secure
B．extend
C．defend
D．possess
单项选择题
Unless you sign a contract with the insurance company for your goods, you are not entitled ___________a repayment for the goods damaged in delivery.
A．to
B．with
C．for
D．on
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