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B,我第一次也选B,但我越看越觉得E对. 理由1 Of the five hundred million different species of living creatures ... the 不能省,见OG 176 the 50,000 to 100,000 of the different genes found in a human cell 这里THE也不能省
8.A huge flying reptile that died out with the dinosaurs some 65 million years ago, the Quetzalcoatlus had a wingspan of 36 feet, believed to be the largest flying creature the world has ever seen.