China’s oil price _____ very sharp increase during the year 2010 and it is continuing to rise further in 2011.


  1. A.
    observed
  2. B.
    witnessed
  3. C.
    proved
  4. D.
    supplied
B
這題考查動(dòng)詞的observe觀(guān)察witness目睹，見(jiàn)證prove證明supplied供應(yīng)，句意是：2010中國(guó)見(jiàn)證了油價(jià)的急速上升，2011年還在持續(xù)上漲。選B。
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