单选题 He knew that the area's rich plant life had been severely______by the huge herds of cows grazing the land.(2013年3月中国科学院考博试题)
【正确答案】 A
【答案解析】解析:A项“depleted”意为“耗尽……的资源,使枯竭”;B项“decomposed”意为“分解,使腐烂、使腐败”;C项“corrupted”意为“腐蚀,使堕落”;D项“corroded”意为“腐蚀,侵蚀”,句意说的是植被资源因放牧被耗尽了,因此选择A项。