教育科学有诸多的分支学科，其中在整个教育科学体系中处于基础地位的是( )。

A．stronger
B．less unusual
C．more unfamiliar
D．more specially

A．Darwin graduated from a medical school.
B．Some animals have adaptations so that they can survive.
C．Darwin published a scientific paper by himself.
D．Darwin was first chosen to sail on the Beagl