题目

等物质的量的下列有机物在氧气中充分燃烧，消耗氧气最多的是   (    ) A、乙醛                   B、乙二醇(HOCH2CH2OH) C、乙醇                   D、甲酸甲酯(HCOOCH3) 答案：C24、________ all his friends say, he is usually warm-hearted, loving and generous. A．Which        B．As      C．What         D．That