A．Those who don’t emphasize bookish excellence in their pursuit of happiness.
B．Those who are aware of difficulties in life hut know how to avoid unhappiness.
C．Those who measure happiness by an absence of problems but seldom suffer from N. B. D. ’s.
D．Those who are able to secure happiness though having to struggle against trying circumstances.

A．American firms are different from Japanese and German firms in human-resource management.
B．Extensive retraining is indispensable to effective human-resource management.
C．The head of human-resource management must be in the central position in a firm’s hierarchy.
D．The human-resource management strategies of American firms affect their competitive capacity.