单选题 According to the author competition differs from conflict in that______.

A、 it results in war in most eases
B、 it induces efforts to expand territory
C、 it is a kind of opposition among social entities
D、 it is essentially a struggle for existence

【正确答案】 D

【答案解析】细节题。根据第二段第二句，“…this struggle (指the struggle for existence) in nature is competition，not conflict" 以及最后一句 "The essence of the struggle is the competition for…”可知[D]正确。有些考生因第一段第三句出现了“…competition，defined as op- position among social entities…”而误选[C]。