单选题 It was a type of urban story that continues to ______ big-city dwellers forward each day, a tale of hard work and self-starting initiative, of taking matters into one's own hands to make dreams come true.
A. propel B. penetrate C. baffle D. harness

【正确答案】 A

【答案解析】[解析] 本题空格处是说居民们每天都在推动大城市向前发展。A项的“propel推动，驱使”符合题意，如：a person propelled by ambition(受野心驱策的人)。其他三项“penetrate穿透，渗透；baffle为难；harness利用(河流、瀑布等)产生动力”都不正确。