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        1. I ______ my mind to study harder since I visited the Shanghai Supercomputer Centre.
          A.a(chǎn)m making upB.have made upC.made upD.had made up
          B

          試題分析:句意:自從我參觀了上海超級電腦中心,我就下定決心更努力的學習。本句考查的是時態(tài),因為句中有since,自從,它常和現(xiàn)在完成時連用,故本題應該選B。make up one’s mind to do sth. 是一個句型,下定決心去做某事。A選項是現(xiàn)在進行時;C選項是一般過去時;D選項是過去完成時。
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