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Finally, save your document before you ________ your computer


  1. A.
    turn on
  2. B.
    turn up
  3. C.
    turn off
  4. D.
    turn down
C
詞義辨析。turn on打開;turn up調高;turn off       關閉;.turn down調低。句意:最后,在關閉電腦前保存你的文件。所以選C。
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  1. 1.

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    1. A.
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