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        1. 【題目】________you start a task,you must finish it on time.

          A.UnlessB.UntilC.ThoughD.Once

          【答案】D

          【解析】

          句意:你一旦開始一件任務,就必須把它完成。

          考查連詞。A. Unless除非;B. Until直到;C. Though盡管;D. Once一旦。觀察句子邏輯關(guān)系,應該是“Once一旦”,故選D。

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