Sunday is the day of a week.
甲图为“非洲主要陆地自然带”示意图。乙图为“陆地假想变化示意图”,乙图南部虚线以内由海洋变成陆地。读图,回答下列各题。
龟兔赛跑的故事,我们已经听了无数遍,人类也已经亿万次地重复它了,可是还是会不断地讲下去!因为它告诉我们一个真理﹣﹣到达理想彼岸的唯一途径是( )
—You'd better _______ the workers into two groups and ask them to take turns to work.