The dreams of being chased by someone or something occur during periods of ______.

A．Invest your time and energy in pursuance of ideal.
B．We grow old by deserting our ideals.
C．One should strive for truth and justice.
D．One must set out to live life.

A．human societies will be much more cooperative
B．man will live in a highly organized world
C．machines will take control over man
D．living beings will disappear from Earth