A-A+
Why does the author call lichens pioneers？A．Be
问题详情
Why does the author call lichens pioneers？
A．Because they developed so early in the history of the planet.
B．Because of their primitive structure.
C．Because they prepare soil for other plants.
D．Because they were the first plants to live in Antarctica .
参考答案
正确答案：C
解析：细节题型见第一段最后一句的伴随状语：appearing in barren rocky areas and starting the formation of soil in which mosses，then ferns，and then other plants can take root(它们出现在荒芜的多岩石地区，使得土壤开始生成，然后各种植物才得以据此生根)可知C为答案。
