4, some paleontologists debate whether the diversity of species has __ since the C period, or whether imperfections in the fossil records only suggest greater diversity today, while in actuality there has been either __ decreased diversity
a changed, escalation b, increasedm, stasis c expanded, discontinuity d, declined, reduction e, improved deviation
想问 whether..., or whether...是什么意思。我原来以为是反义,答案解释是并列关系,那么其中的whether是 是否的意思? 谢谢解答!!!!!