High corporate leaders seem to be in favor of promoting diversity so as to ______.

A．They want to return to nature.
B．They want to eat all kinds of foods.
C．Natural foods are very delicious.
D．They are more health conscious.

A．The function of toys is to inspire play.
B．Good toys are very important to the children' s growth.
C．Toy should be chosen according to children' s ages.
D．Toys are still the main source of learning for a student.

A．Chickens are fed on food which is little better than garbage.
B．Chickens live in very crowded condition.
C．The eggs chickens produce lack vitamins.
D．Chickens are free to move about.