看拼音写同音字。
zhuàng tǐng sī nǎo
____元 快____ 公____ ____筋
____大 ____快 公____ ____怒
用显微镜观察根尖纵切面切片:根尖由根冠、____、____、成熟区四部分组成.
We are planning to have a surprise party ________ her fifteenth birthday