同学们还记得读小学的时候老师为你们编的一首儿歌吗?“一只青蛙一张嘴,两只眼睛四条腿,‘扑通’一声跳下水;两只青蛙两张嘴,四只眼睛八条腿,‘扑通’‘扑通’跳下水;四只青蛙四张嘴,八只眼睛十六条腿,‘扑通’‘扑通”扑通“扑通’跳下水……” Did the classmates still remember a nursery song that the teacher had compiled for you when you were in elementary school? “A frog has a mouth, two eyes and four legs, and ’punch’ jumps into the water; two frogs have two mouths and four eyes and eight legs. ’Plop’ and ’Push’ jumped into the water; four frogs had four mouths, eight eyes and sixteen legs, ’Plump’, ’Push’, and ’Plop’ jumped into the water..."