单选题
The evolution of the mangrove species is described to______.
A、
illustrate the similarities of human society to the natural world
B、
provide a contrastive example to the development of human society
C、
explain how Nature ruthlessly gets rid of the weaker species
D、
how plants evolve to maintain their quality of life
【正确答案】
B
【答案解析】
[考核题型] 细节题
[解析] 第二段首句指出“我们通过考察一种生态系统的演变与人类社会相比较……”可见答案为B。
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