雅思证书编号 OPTIONS

It includes a more restrictive set of standards to validate the KDC's certification, primarily it requires a KDC certification with the EKU of “KDC Authentication” (see possibility b. previously mentioned). 雅思考试和四六级应试考试不同，主要是能力型考试，主要考察，解题+科目能力+词汇+语法+逻辑，所以�