单项选择题

Which of the following is NOT mentioned in the passage

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.

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单项选择题

This passage is mainly concerned with ______.

A．people's growing interest in natural foods
B．natural food and health diet
C．the importance of fibre in foods
D．harmful effects of sugar

单项选择题

The passage is about ______.

A．the importance of education
B．the importance of play
C．the children' s speech development
D．the relationship between play and study