如图是呼吸系统模式图，请据图回答：
补全成语
并无二____ 小心____ 花团____簇 不____其烦
下列对露置在空气中已部分变质的氢氧化钠溶液样品进行的相关实验中，实验现象及结论合理的是
—Can you lend me the book Passing by Your World?
—Sorry. I returned it to the library just now. Maybe it is still ________.
