Boston—Many college students today struggle with cheating. The Internet offers many temptations—there are term papers for sale along with articles and news reports that can be copied for free with the click of a mouse. It is not surprising that cheating is sometimes difficult to resist.
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【正确答案】 1、F,    2、D,    3、A,    4、G,    5、E    
【答案解析】解析：空格后就某种现象解释了原因，提到信任可以预防作弊，因为“很明显许多学生不想破坏这种信任”，再结合第四段最后一句可知，这种信任是honor code(荣誉准则／诚信)带来的，所以本题选E项。