第二节：完形填空（共20小题；每小题1分，满分20分）
Throughout history man has had to accept the fact that all living things must die. But people now live longer than they 21 . Yet, all living things still show the 22 of aging, which will eventually 23 death.
Aging is not a disease, but as a person passes maturity (成熟期), the cells of the body and the 24 they form do not function as well as they 25 in childhood and teenage years. The body provides less 26 against disease and is more 27 to have accident.
