题目

Young adults       older ones are more likely to prefer sports and become enthusiastic sports fans． A．other than         B．more than            C．less than       D．rather than 答案：D哺乳动物的牙齿有了门齿、犬齿和臼齿的分化，你的牙齿组成是（ ）A.门齿、臼齿B.臼齿、犬齿C.门齿、犬齿D.门齿、臼齿、犬齿