标题: TN-12-39,请NN指教 [打印本页] 作者: kaja 时间: 2009-11-24 15:21 标题: TN-12-39,请NN指教 Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing.
A. Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing. B. Nearly 99 percent of five hundred million different species of living creatures that appeared on Earth have vanished. C. Vanished are nearly 99percent of the five hundred million different species of living creatures that appeared on Earth. D. Of five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent of them have vanished. E. Of the five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent have vanished.