[求助]OG11对98E选项的解释和105B选项的解释矛盾！

本来对定语从句、分词短语究竟修饰哪个词就很困惑，总结的时候发现OG11对分词修饰的词的解释都矛盾：

OG11-98

As rainfall began to decrease in the Southwest about the middle of the twelfth century, most of the Monument Valley Anasazi abandoned their homes to jion other clans whose access to water was less limited.

(E) having less limitations to water access (OG 认为having is ambiguous because it is unclear whether it refers to the Anasazi or other clans.)

原句正确，我也知道E选项limitations 不能用less修饰，但having难道不是很明显修释other clans么？然而105题又有如下说法：

OG11-105

Originally developed for detecting air pollutants, a technique called proton-induced X-ray emission, which can quickly analyze the chemical elements in almost any substance without destroying it, is finding uses in medicine, archaeology, and criminology.

(B) Originally developed for detecting air pollutants, having（OG认为修饰了pollutants） the ability to analyze the chemical elements in almost any substance without destroying it, a technique called proton-induced X-ray emission

原句正确，尽管我也觉得B选项不正确，但OG的解释中认为having 直接修饰pollutants，让我对98题OG的解释更加不理解。。。

请NN帮忙解释一下到底这个分词结构是怎么修饰前面的词的？到底修饰的是哪个词啊？

我觉得不能迷信OG.

因为having,修饰复数,  

(B) Originally developed for detecting air pollutants, having（OG认为修饰了pollutants） the ability to analyze the chemical elements in almost any substance without destroying it, a technique called proton-induced X-ray emission

这里having不可能修饰一个单数a technique
    

而第1句中,2个都是复数,不能区分

我想 OG11 对于 －ing分词，有3个功能

1 是修饰句子主语 2是作定语修饰“immediately"先行词 3 是作状语，修饰整个句子

98 E 语法上存在1、2得修饰疑问（逻辑也是可能得）所以有 having is ambiguous because it is unclear whether it refers to the Anasazi or other clans 一说 （个人认为比较勉强，因为-ing前没有逗号)

105 那个-ing也是存在作定语修饰immediately先行词还是修饰主语得疑问 （这是OG11典型错误）

欢迎指出我说法有问题得地方，谢谢