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
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单项选择题
It can be inferred from the text that the author thinks Hippocrates.
A．had beliefs that should have been considered more seriously by western scholars
B．had too narrow an outlook on human nature
C．did not believe in freedom of choice for people
D．did not believe in environmental influences on personality
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
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