Radio signals are waves that are used to ______ music or speech.A、transferB、tra

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问题 Radio signals are waves that are used to ______ music or speech.

选项 A、transfer
B、transmit
C、transport
D、transform

答案 B

解析 transfer“转移”；transmit“传送”：transport“运输”：transform“转变”。

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Radiosignalsarewavesthatareusedto______musicorspeech.A、transferB、tra