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

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 名词辨析题。A  transaction“(一笔)交易，业务”；B  transmission“(光、电、热、图片等的)传送，输送，传达；(疾病、知识等的)传播”C  transformation“改变，变形，变质”； D  transition“转变，过渡时期，转换”。根据题意，B  为正确答案。
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