问题描述：
[单选]
（）efforts are needed in order to finish important but unpleasant tasks．
A．Consecutive
B．Condensed
C．Perpetual
D．Persistent
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答案解析：无
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答案解析：无
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上一篇：The traditional markets retain their（）for the many Chinese who still prefer fresh food like livefish， ducks， chickens over packaged or frozen goods．
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