It can be inferred from the passage that scientists are "per It can be inferred from the passage that scientists are "perplexed by the means" 分类:GRE 题型:单选题 查看答案
It may be inferred that the author of the passage considers It may be inferred that the author of the passage considers The Birth of a Natio 分类:GRE 题型:单选题 查看答案