Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing.
Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing.
Nearly 99 percent of five hundred million different species of living creatures that appeared on Earth have vanished.
Vanished are nearly 99percent of the five hundred million different species of living creatures that appeared on Earth.
Of five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent of them have vanished.
Of the five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent have vanished.
答案是E, 我也同意
之前的帖子对A选项的错误集中在them指代不清。但代词可以指代短语,这里them可以指代Five hundred million different species of living creatures ,这样的话,nearly 99 percent of them vanishing就是标准的独立主格。NN现身解释下