单选题 Human beings have ______ themselves to very diverse environments with the help of fire, agriculture and machines.
A. adapted B. addicted C. adopted D. adhered

【正确答案】 A
【答案解析】动词词义题。addict to意思是“上瘾，沉溺于”；adopt“收养”，也可以表示“采纳”；adhere to则表示“遵守”。