He puts five ____ (pound) into the bottle every day.
读拼音,写汉字。
dù juān
qínɡ lǎnɡ
tī tuǐ
lǎo diāo
dà yàn
____
归纳这首小诗的题旨:____
图为人的心脏结构示意图,心脏的四个腔中,肌肉壁最厚的是( )