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题库 / Prep2007E1-SC-10
Ancient hunter-gatherers developed instincts that stigmatized selfishness, and voluntary cooperation was encouraged as well, whether it be within the group or also with outsiders.
selfishness, and voluntary cooperation was encouraged as well, whether it be within the group or
selfishness, encouraging voluntary cooperation as well, both within the group but
selfishness and also encouraging voluntary cooperation, within the group and
selfishness and they encouraged voluntary cooperation, whether it be within the group or
selfishness and encouraged voluntary cooperation, not only within the group but
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1、both and固定搭配，杀B；为了使没划线的also在平行结构中，ABD其实都不好了，C and+also也尴尬
2、and前后并列，杀C
3、they指代不清（instincts？hunter-gatherers？）杀D
3、由A（原句），stigmatized 污名化和encourage应该是并列的，encouraging……as well既不是结果状语，也不能是伴随状语（修饰前面）
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