Corporate culture is signified

According to Saussure, the relation between the Signified and the signifier is arbitrary.（）

He signified his _____ by waving his hand to us. A: greed B: regardless C: greeting D: regarding

The ditry tricks played upon the Secretary of the State are ______ by the high-ranking officials behind the scenes. A: reckoned B: meddled C: manipulated D: signified

The ditry tricks played upon the Secretary of the State are ______ by the high ranking officials behind the scenes. A: reckoned B: meddled C: manipulated D: signified