单项选择题

A．Pollution of the environment.
B．Over-killing by hunters.
C．Destruction of their natural homes.
D．A new generation of pest killers.
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单项选择题
The barrier to democracy in 21st century America is______.
A．widespread use of racist stereotypes
B．prejudice against minority groups
C．deep-rooted socio-economic inequality
D．denial of legal rights to ordinary blacks
单项选择题
A．It publishes books only for children.B．It publishes books about people’’s pets.C．It uses computers to make up stories.D．It makes the young readers the leading characters in the stories.
A．It publishes books only for children.
B．It publishes books about people’’s pets.
C．It uses computers to make up stories.
D．It makes the young readers the leading characters in the stories.
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