每頁(yè)一個(gè)動(dòng)物,都是有翅膀的,但是功能不同。都用一句話做了說(shuō)明,天鵝的是用來(lái)fly away,蜂鳥(niǎo)的fly up and down,Puffin(查了詞典叫海雀)的用來(lái)land,野鵝的用來(lái)take off,企鵝的用來(lái)swim。
why do birds have wings?cindy rodriguez