[单项选择]One aim of psychological research is to ______.

[单项选择]One aim of psychological research is to_____.

[单项选择]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]One of the major difficulties of research into human health problems is the difficulty of ______.
A. knowing how many factors there are
B. isolating particular, individual factors from the complex human environment
C. knowing the complex human environment
D. increasing the number of the competent physicians

[单项选择]

One of the most important results of research into ageing has been to pinpoint the significance of short-term memory. This faculty is easily (1) as ageing advances. What seems to (2) is that in formation is received by the brain, (3) scans it for meaning in order to decode it at some future time. It looks as if the actual (4) of the short-term memory itself may not change too much (5) age. A young man and a man in his late fifties may (6) be able to remember and repeat a(n) (7) of eight numbers recited to them. But what (8) change is that when the older man is asked to re member anything (9) between the time he is first given the numbers to memorise and the time he is asked to (10) them, he will be much less likely to remember the (11) numbers than the young man. This is because the scanning stage is more easily (12) by other activities in (13) people.
In (14) living one expe
A. as
B. that
C. which
D. what