ACCorDing to thE pAssAgE, whiCh oF thE Following woulD thE Author ADvisE olD pEoplE to Do
A．try to mix with thE young.
B．AvoiD strong pErsonAl Emotions.
C．try to rEmAin As ACtivE As you wErE whEn you wErE young.
D．FinD out your own intErEsts AnD try to BE As ACtivEly EngAgED in thEm.