Ⅰ. Since December, when the report came out, the mayor, neighborhood activists and various parent-teacher associations have engaged in a fierce battle over its validity: over the guilt of the steel-casting factory on the western edge of town, over union jobs versus children’s health and over what, if anything, ought to be done. (2009.12 阅读 Text2)

　　【翻译】从12月的新闻报道出来之后，市长、街区活跃分子、各种各样的家长老师联合会都参与到了一场激烈的争论其合法性的战争中：争论小镇西边的钢铸件厂的罪责，争论到底是工会工作重要还是孩子的健康重要，争论到底我们能做什么、该做些什么。

　　【词汇】1. activist n. 积极分子，活动分子

　　例：He is an activist in the union jobs.

　　他是工会工作中的积极分子。

　　2. be engaged in……从事，致力于

　　例：I’m engaged in writing a letter.

　　我忙着写信。

　　3. validity n. 合法性，正确性，有效性

　　例：I have some questions about the validity of his statement.

　　我对他的陈述的合法性有些疑问。

　　4. versus prep. 对抗，与……相对，可简写为：VS

　　例：The most exciting game was Brazil versus Spain.

　　最激动人心的比赛是巴西队对西班牙队。

　　【语法】三个连续的“over”形成排比句，与battle相连，组成a fierce battle over……关于……的战争。