(____) These are all books about science.
(____) That's a good idea.
(____) Let's put them on this shelf.
(____) We can put them on Shelf B.
(____) Let's make a home library.
化学课上老师用脱脂棉包裹0.2g过氧化钠(Na2O2)粉末,放在石棉网上,往脱脂棉上滴水,观察到脱脂棉剧烈燃烧起来.同学们根据这一实验现象开展了如下探究:
The conditions in the hotel will make you feel ____ (comfort).
下列关于染色体、DNA和基因的叙述中,不正确的是( )