文章开篇提出主题,关于“the ability to focus without distraction”, 第二段开头说“a number of approaches”, 提出方法,第四段开头another approach,所以这篇文章重点还是在说方法,所以B选项approaches to getting more done in less time为正确答案。more done i...
A.havingbeenaddressedB.tohaveaddressed C.tohavebeenaddressedD.beingaddressed 12.TheSpaceShuttleColumbiabrokeintopiecesoverTexasasitreturnedtotheearthonFebruary1,2003, ___allsevenastronautsaboard. A.havingkilledB.killingC.beingkilledD.killed 13.Ther...
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