单选题
This teaching method is a ______ of many methods which have been used for decades in the country.
A、
symposium
B、
symphony
C、
spectrogram
D、
synthesis
【正确答案】
D
【答案解析】
[解析] symposium讨论会；symphony交响曲；spectrogram光谱图；synthesis综合，合成。
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