单项选择题

The two old debates are significant because.

A．it has profound value to researchers
B．it has academic appeal
C．people's beliefs about human nature can lead to dangerous actions
D．it forms the basis for our political policies

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单项选择题

Scientists are responsible for people who hold harmful beliefs about human nature because.

A．the theories of scientists are used as justification for such harmful beliefs
B．only through science can these people be refuted
C．they have an obligation to correct their mistakes
D．scientists are the ones who know the true nature of humankind

单项选择题

The reason why studying the nature of human beings is popular is that.

A．the scale and scope of it is unprecedented
B．it is useful for determining policy
C．it is still an area of great mystery
D．there are so many best selling books about it