When the object is optimal resource allocation, that combination of legal methods should be used that most nearly yields the allocation that would exist if there were no external costs resulting from allocating resources through market activity.
是否:主语,that combination of legal methods 谓语, should be used that most nearly yields
关于这道题,我的看法是,我参考过的所有SC资料里只有the distinction of being和the chance of being两种情况用到了being这个禁忌,且凡是出现这种结构的均为正确选项。是否与dupe into doing这些Set Phrase类似,这也是一种搭配呢?记得第一次看见credit somebody with having done/give credit to sb of having done的时候惊讶之情溢于言表。这里会不会也是反常?还望Gemj指点迷津。