题目

 Two adults and four children who were lost in a Nevada mountain _______ for nearly 48 hours were foundand well on Tuesday by search crews. A. series, lively     B. range, living     C. range, alive     D. series, live 答案：C常用燃烧法测定有机物的组成．现取3.2g某有机物在足量氧气中充分燃烧，生成4.4gCO2和3.6gH2O，则该有机物中（　　）（相对原子质量：H-1；C-12；O-16） A、一定含C，H两种元素，可能含氧元素B、一定含C，H，O三种元素C、一定含C，O两种元素，可能含氢元素D、只含C，H两种元素，不含氧元素