单选题

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
【正确答案】 B
【答案解析】[解析] 本题是说沙漠植物根据其对抗干旱的能力分为两类。B项“fall into分为…… 种类”符合题意。其他三项“break down毁掉，制服，压倒；differ in不同；refer to指，谈到，参照”都不正确。