Unless negotiations begin soon, the cease-fire will be violated by one of the two sides to the dispute. Negotiations will be held only if other countries have pressured the two sides to negotiate; an agreement will emerge only if other countries continue such pressure throughout the negotiations. But no negotiations will be held until international troops enforcing the cease-fire have demonstrated their ability to counter any aggression from either side, thus suppressing a major incentive for the two sides to resume fighting.
If the statements above are true, and if negotiations between the two sides do begin soon, at the time those negotiations begin each of the following must also be true EXCEPT:
A．The cease-fire has not been violated by either of the two sides.
B．International troops enforcing the cease-fire have demonstrated that they can counter aggression from either of the two sides.
C．A major incentive for the two sides to resume hostilities has been suppressed.
D．Other countries have exerted pressure on the two sides to the dispute.
E．(E) The negotiations’ reaching an agreement depends in part on the actions of other countries.
参考答案：A
解析： 注意：①此为“must be... EXCEPT”题型，其答案方向要么为无关选项，要么为违背选项。②not... unless; only if; not... until表示必要条件的表示方法。如果用A1表示“停火协议不会被违反”，用A2表示“谈判马上举行”，A3表示“别国施加压力”，A4表示“国际部分展示能力”，那么段落推理可表示为：A1→A2→A3A4。很明显，(B)、(C)、(D)、(E)与段落推理吻合，而(A)选项结合问题目的的信息，等于是“A2→A1”，为“A1→A2”的逆命题而逆命题与原命题不一定等价，所以(A)为无关选项，因此(A)为正确答案。