At first, the ______ of color pictures over a long distance seemed impossible, but, with painstaking efforts and at great expens

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

选项 A、transaction
B、transmission
C、transformation
D、transition

答案B

解析 本题为形近名词词义辨析题。transaction意为"交易";transmission意为"传送,发射";transformation意为"改造,改变";transition意为"转变,过渡"。图片需要被"传送",故transmission正确。
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