Several loudspeakers are _______ from the ceiling and we can hear the speaker very clearly. ( 章节：2 难度：3)
- A、connected
- B、sustained
- C、associated
- D、suspended
正确答案:D
答案解析:有
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Several loudspeakers are _______ from the ceiling and we can hear the speaker very clearly. ( 章节：2 难度：3)
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