摘要： 选B.Tommy学习一直不用功.但自从进了这所catholic school之后.情况就不一样了--整天都发狠读书.结果数学考试也得了A.这是为什么呢?文章在最后道出了其原因:Well, on the first day of school, when I saw that man nailed (钉) to the plus sign , I knew they weren’t joking. 由此可知.Tommy是担心学习不用功会被钉在十字架上.

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