Youngerchildrenarecurious________howthingswork，andmanyofthemwanttotakeaparteverythingwithintheirreach.
B
译文：小孩子对事物是如何组成的很好奇，一些孩子总是想把他们够得到的东西都拆开。此题考查短语搭配， be curious about 对…好奇。
Thesetwoalarmclocksarenormallysettogether,butnowtheyhavebeenresetafewhours_________.
Theconclusionfromthestudyisnotdefinite;itisjust________.
Lyingundertheskull,thehumanbraincontainsanaverageoftenbillionnervecellscalled______.