单项选择题

In the passage the writer's tone is（）

A．critical.
B．apathetic
C．sympathetic
D．neutral.

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单项选择题

The writer believes the problems of chaos and noise will most probably only be solved by（）

A．the students themselves.
B．the students' parents.
C．the college authorities.
D．the newspaper.

单项选择题

In the animal kingdom the struggle for existence（）

A．is evidence of the inevitability of conflict among the fittest.
B．arises from a need to live in groups.
C．is evidence of the need to compete for scarce resources.
D．arises from a natural desire to fight.