2. 外语
  3. The patient smiled when he heard the sprightly music______the radio.

The patient smiled when he heard the sprightly music______the radio.

admin2012-06-10  50
问题 The patient smiled when he heard the sprightly music______the radio.
选项 A、on
B、by
C、with
D、in
答案A
解析 介词用法题。通过广播、电视、电话等渠道，通常用介词on，因此A符合题意。
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