语法与词汇 The _____ cycle of life and death is a subject of interest to scientists and philosophers alike.

A、 incompatible
B、 exceeding
C、 instantaneous
D、 eternal

【正确答案】 D

【答案解析】句意：生与死这一永恒的循环，是科学家和哲学都感兴趣的课题。eternal永恒的。难度：简单incompatible不可共存的，矛盾的。exceeding过度的。instantaneous瞬间的。She remains confident and _____ untroubled by our present problems.