这题确实挺怪义的。不过你的gmat 爱情逻辑题更怪异，真难,haha. 结论：“Neither stronger ethics regulations nor stronger enforcement mechanisms are necessary to ensure ethical behavior by companies doing business with this department. 理由1：We already have a code of ethics that companies doing business with this department are urged to abide by, and virtually all of these companies have agreed to follow it. 反驳： The fact that a code already exists does not necessarily guarantee that the code is effective...... 理由2：We also know that the code is relevant to the current business environment because it was approved within the last year, and in direct response to specific violations committed by companies with which we were then working—not in abstract anticipation of potential violations, as so many such codes are.” 反驳： 1， relevance does not ensure that it works well. 2， experience is not surely preferred to anticipation. | 
