[求助]OG-42关于worry about与worry over区别？

42. The current administration, being worried over some foreign trade barriers being removed and our exports
                failing to increase as a result of deep cuts in the value of the dollar, has formed a group to study ways to sharpen our competitiveness.

(A)              being worried over some foreign trade barriers being removed and our exports failing

(B)             worrying over some foreign trade barriers being removed, also over the failure of our exports

(C)             worried about the removal of some foreign trade barriers and the failure of our exports

(D)             in that they were worried about the removal of
            some foreign trade barriers and also about the
            failure of our exports

(E)              because of its worry concerning the removal of
            some foreign trade barriers, also concerning
            the failure of our exports

Choice C is best because its phrasing is parallel and concise. A, D, and E begin with unnecessarily wordy phrases. Choice C also uses the idiomatic expression worried about rather than worried over (as in A) or worrying over (as in B); worried about is preferable when describing a condition rather than an action.
        

感觉这种区分并不明显啊？

是不是在GMAT中worry about优于over呢？还是有什么具体的区分？

谢谢指正！

不是的，describing a condition rather than an action

担心是描述一种状态，而不是一个动作

而且后面的the removal and the failure

都是表状态的名词，很对称

嗬嗬

牛津朗文都没说出有什么区别，韦氏我没有，词组应该不做作考试重点，况且OG的解释里也主要在说状态和动作的区别