单项选择题

One aim of psychological research is to ______.

A．study worker candidates' intelligence and characteristics
B．discover the special intelligence and personality characteristics of worker candidates'
C．solve the specific problem
D．help choose the right or suitable workers for particular jobs

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单项选择题

The other aim of psychological research is to______.

A．find ways in which a particular job can best be accomplished with a maximum of effort and a minimum of individual satisfaction
B．place primary emphasis on increased salaries
C．lessen the effort involved in a given job include a detailed study of the motions
D．promote efficient working conditions and techniques, as well as individual job satisfaction

单项选择题

When the author says that Ceren' s architecture, crafts, and agriculture were surprisingly sophisticated and varied. , he means ______.

A．Ceren at that time enjoyed a high civilization
B．people in Ceren were more intelligent than people today
C．Ceren' s disappearance was a tragedy
D．the power of nature was great