A car engine cannot run smoothly without motor oil.____ our body cannot function efficiently without vitamins.


  1. A.
    fortunately
  2. B.
    Gradually
  3. C.
    Similarly
  4. D.
    Confidently
C
副詞辨析。A幸運(yùn)地是；B逐漸地；C相似地；Ｄ有信心地；結(jié)合句意可知Ｃ正確。句意：沒有基友，汽車發(fā)動(dòng)機(jī)就不能順利運(yùn)轉(zhuǎn)。相似地是沒有維他命，我們的身體也不能有效的運(yùn)轉(zhuǎn)。
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