The BBC has just successfully demonstrated a new digital radio ______ system.

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问题 The BBC has just successfully demonstrated a new digital radio ______ system.

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

答案C

解析 transaction表示“办理,执行;业务,交易”;transition表示“过渡;转变”;transmission表示“(电子信号、信息等的)传送;传播;发送”;transformation表示“完全改变,改观”。根据句意可知应选C项。
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