窗口將在 5秒后自動關閉.
n.
同義參見:
以上來源於：《英漢大辭典》
以上來源於：《簡明牛津英語詞典》
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閱讀Part1
After evaluating the amount of work we actually accomplished, we realized that only a quarter of our time was spent ________.
(A) productively
(B) productive
(C) productivity
(D) productiveness
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