问题详情

Paragraph 6 ___________
A．Effects of aging on a person"s recall ability
B．short-term memory versus long-term memory
C．retention as the second necessity for memory
D．like between learning strategies and effective memory skills
E．Significance of exercising your muscles
F．importance of staying intellectually active 请帮忙给出正确答案和分析，谢谢！