(The farmer) knows something that the whole (civilized) mankind seems (to have forgotten), namely, (when) the resources of life on our planet are not inexhaustible.
【单选题】Passage One Animals have different ways of protecting themselves against wintertime weather. Some animals grow heavy coats of fur or feathers, while others dig into the ground to find a warm wintertim...
A.
takes place only during a particular season
B.
occurs only during the night
C.
is a daily practice
D.
only happens when a species becomes over-populated