A．A comparison of jogging and other exercises.
B．A discussion of jogging as a physical fitness program.
C．A description of the type of clothing needed for jogging.
D．Providing scientific evidence of the benefits of jogging.

A．He was not affected at all.
B．He didn’t publish stories during the Great Depression.
C．It had little and indirect influence on Hemingway’s writing.
D．He was greatly affected and wrote some first class works dealing with it.