第24题: [单项选择]产后出血是指() A. 胎儿娩出后24小时内阴道流血量>500ml B. 胎儿娩出后12小时内阴道流血量≥1000ml C. 胎盘娩出后24小时内阴道流血量>500ml D. 胎盘娩出后24小时内阴道流血量≥1000ml E. 胎盘娩出后12小时内阴道流血量≥500ml 参考答案:A
第30题: [单项选择]Even when textbooks are ______ through a school system, methods of teaching may vary greatly. A. commonplace B. standardized C. competitive D. generalized 参考答案:B 答案解析:形容词辨析。commonplace意为“普通的”,standardized意为“使标准化的”,competitive意为“竞争性的”,generalized意为“使普及的”,只有standardize