og12 60求解

doudoucc

While all states face similar industrial waste problems, the predominating industries and the regulatory environment of the states obviously determines the types and amounts of waste produced, as well as the cost of disposal.

• Aall states face similar industrial waste problems, the predominating industries and the regulatory environment of the states obviously determines
• Beach state faces a similar industrial waste problem, their predominant industries and regulatory environment obviously determine
• Call states face a similar industrial waste problem; their predominating industries and regulatory environment obviously determines
• Deach state faces similar industrial waste problems, the predominant industries and the regulatory environment of each state obviously determines
• Eall states face similar industrial waste problems, the predominant industries and the regulatory environment of each state obviously determine

og解释说b选项里面Each state must be compared to all other;
这句话是个什么意思啊？
看到以前这个点讨论了很多遍，但就是没真正解决，还希望高手解决一下！

Knightll

这道题目中国人很难做对，因为这和美国的国情有关。因为美国每个state都有自己各自的法律，比如在有些state吸大麻合法，在有些state不合法。
为什么要选all states face,和。。。of each state呢？
因为污染问题是每个state都遇到的，但是regulatory envionment每个state都不一样，所以必须要点名each state去决定各自的。
对中国人来说是不可想象的，对中国人来说只有regulatory environment of our country，不是嘛

cynthia129

我觉得og解释已经挺明确了，WHILE引导的从句已经提示前后两部分的不同性，那么根据句意来看all states应该和each state 有所对比。