15.Since then,finding ways to grow more peanuts _____ his life goal.( 。
A.has beenB.wereC.wasD.have been

分析 從那時起,尋找種植更多花生的方法就已經(jīng)成了他的人生目標.

解答 答案:A
根據(jù)句中的時間狀語Since then可知,此處表示過去的動作"be his life goal"(成了他的人生目標)持續(xù)到了現(xiàn)在,所以這里應使用現(xiàn)在完成時;故選A.

點評 本題考查了現(xiàn)在完成時除了強調"影響性"之外的另一用法;即表示過去發(fā)生的動作/狀態(tài)持續(xù)到了現(xiàn)在;做類似的題時,需要熟練掌握現(xiàn)在完成時的意義及用法.

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