A.our mind
B.our body
C.our age
D.our nerves
A.they do not learn in classrooms
B.they have a real desire to learn
C.they learn a lot from their own mistakes
D.they aremore worried about their learning than the younger students
A.Aged People Learn Better than Young People
B.Young People Learn Better than AgedPeople
C.It Is Never Too Late to Learn
D.The Brain Shows Adult People's Desire to Learn