______himself to his research on the IT technology, he soon made a breakthrough.
A．DevotedB．DevotingC．DevoteD．To devote
B

試題分析：考查現(xiàn)在分詞做狀語，句意：因為致力于IT技術(shù)的研究，他很快就有了突破。Devote oneself to doing致力于做…,he和devote是主動關(guān)系，用現(xiàn)在分詞做狀語。選B。
點評：現(xiàn)在分詞還是過去分詞做狀語主要取決于動詞和邏輯主語的關(guān)系：如果動詞和邏輯主語是被動關(guān)系，用過去分詞，如果動詞和邏輯主語是主動關(guān)系，用現(xiàn)在分詞。這題要注意，如果沒有himself，就應(yīng)該選A。
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