第25题: [单项选择]Desert plants ______ two categories according to the way they deal with the problem of surviving drought. A. break down B. fall into C. differ in D. refer to 参考答案:B 答案解析:“沙漠植物根据其对抗干旱的能力为两类”。fall into就表示“分为…种类”;break down毁掉,制服,压倒;differ in不同;refer to指,谈到,参照。