A. Shopping centers. B. Schools. C. Parents. D. The Education Ministry. 参考答案:C 答案解析:[分析] Parents have to take responsibility otherwise they are jeopardizing their children ' s future.
第2题: [单项选择]胸腔抽液每次不宜超过() A. 0.5~1.0L B. 0.3~0.5L C. 0.5L D. 0.3L E. 1.01 参考答案:E