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        1. The factory _________ since two years ago.

          A.has been open B.has opened
          C.was open D.opened

          A

          解析試題分析:句意:這家工廠自從兩年前就開放了。結(jié)合語境可知本句描述的是一直持續(xù)到現(xiàn)在的動作,故用現(xiàn)在完成時態(tài)。選項B表示瞬間動作,故選A。
          考點:考查時態(tài)及動詞辨析

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