下列有关群落演替的叙述,不正确的是( ) A.群落的演替是指一个群落替代另一个群落的过程 B.草原地区的农田在弃耕后开始出现次生演替 C.群落的初生演替速度通常非常慢 D.火灾过后的森林发生的演替是初生演替 答案:D9.听第7段材料,回答第8至9题. 8.What is the man probably? A.A policeman. B.A reporter. C.A neighbor.9.Who was away on business in Beijing? A.The woman's son. B.The woman. C.The woman's husband.