求助蓝皮上的一道填空题

kwnxkUID: 3187060

While the delegate clearly sought to___the optimism that has emerged recently, she stopped short of suggesting that the conference was near collapse and might produce nothing of significance.
A) substantiate
B)dampen
C)encourage
D)elucidate
E)rekindle

答案选B，为什么选B呢，conference和optimism有什么关系吗

水逼一枚UID: 3227908

前半句while引导反义重复，由后半句填前半句，后半句说她不在暗示说这个conf是collapse的，不在觉得这个会议没有产生一点重要性，就说明她前半句是在说这个会议的不好不好。。也就是_____ the optimism要表示一种消极的态度，所以选择B。。。

in other words:
while引导反义重复,所以：_______ the optimism = — stop suggest(conf collapse,conf no significance)= suggest(conf collapse,conf no significance)即一种悲观态度=抑制optimism

kwnxkUID: 3187060

2# 水逼一枚
好像明白了，谢谢哦