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( )。

单项选择题Which of the following is TRUE（）

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

单项选择题The underlined word they in the last paragraph refers to（）.

A．adaptations
B．Darwin and Wallace
C．animals
D．Darwin’s ideas

单项选择题When Darwin published the scientific paper, he was （）years old.

A．twenty-three
B．twenty-two
C．forty-five
D．fifty

单项选择题The Beagle was a(an)（）.

A．ship
B．plane
C．plant
D．animal

单项选择题Darwin was very. interested in（）.

A．attending medical classes
B．the work of a minister
C．sailing around the world
D．science