题目

 The driver who died in the accident could have ____, but he didn’t wear the seat belt. A. competed         B. recovered     C. rescued           D. survived 答案：D2015年6月国家开始实行饮用水新标准，矿物质水、碱性水、离子水等名称将被禁止使用。某品牌饮用水标签标明了该水中钠、钾、钙等的含量，钠、钾、钙等是指A.原子 B.分子 C.元素 D.单质