单项选择题

What is the passage mainly about

A．Science teachers to ban testing harmful to animals.
B．Teachers' policy change in experiment on animals.
C．The new policies of banning harmful experiments to animals.
D．The importance of prohibiting harmful experiments on animals.

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单项选择题

It is suggested in the last paragraph that ______.

A．the seriousness of animal abuse in the classroom is unknown
B．training teachers in animal care may contribute to reducing animal abuse
C．fewer animals have been used in experiments in recent years
D．many biology teachers are not trained in proper care of animal

单项选择题

It can be learned from the text that the teachers ban harmful experiments to animals in order to ______.

A．maintain ecological balance
B．please animal welfare groups
C．get financial support from their sponsors
D．protect necessary harmless experiments on animals