原文第二段：In the popular imagination,of course,guilt still gets a bad rap.It is deeply uncomfortable—it’s the emotional equivalent of wearing a jacket weighted with stones.Yet this understanding is outdated.“There has been a kind of revival or a rethinking about what guilt is and what role guilt can serve,”says Amrisha Vaish,a psychology researcher at the University of Virginia,adding that this revival is part of a larger recognition that emotions aren’t binary—feelings that may be advantageous in one context may be harmful in another.Jealousy and anger,for example,may have evolved to alert us to important inequalities.Too much happiness can be destructive.

　　题目：Vaish hold that the rethinking about guilt comes from an awareness that______.

　　A）emotions are context-independent

　　B）emotions are socially constructive

　　C）emotional stability can benefit health

　　D）an emotion can play opposing roles

　　解析：

　　[D]an emotion can play opposing roles

　　根据题干Vaish hold that the rethinking about guilt comes from an awareness that______.中的关键词Vaish定位到第二段第四句，根据第四句中的adding that this revival is part of a larger recognition that emotions aren’t binary—feelings that may be advantageous in one context may be harmful in another.可知这种复兴是更大的认识的一部分，即情绪不是二元情感，在一个情境中有利的情绪，在一个情景中可能是有害的。其中第4句中的revival和题干中的rethinking对应，第四句中的recognition和题干中的awareness对应，因此答案是D选项an emotion can play opposing roles。