题目分析：

想做对本题，考生必须看全整句，不能只看划线部分。很多的考点判断依据是藏在未划线部分的。
本题划线部分身前的employed是过去分词，整个分词短语employed by manufacturers and utility companies as product demonstrators and publicists是women的定语，语句结构为：
the women were employed by manufacturers and utility companies as product demonstrators and publicists. 

选项分析：

A选项：Correct. 本选项在语法和逻辑上均是正确的。

B选项：首先，A is employed as B的意思是：A被雇佣为B，A is employed to be B的意思是：A被利用为B。显然地，本题的意思是女性被雇佣为产品说明者，而不是女性被利用为产品说明者。其次，划线部分身后的定语从句who initially promoted new and unfamiliar technology to female customers最近的名词为manufacturers and utility companies。在逻辑上，该定语从句描述的是product demonstrators and publicists。

C选项：划线部分身后的定语从句修饰对象错误同选项(B)；A is employed to do错误同选项(B)。

D选项：A is employed to be B错误同选项(B)。

E选项：A is employed to do错误同选项(B)。

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