单项选择题

The purpose of the psychologist's experiments is to test whether smoking has a positive effect on the mental _________ of smokers.

A．faculty
B．volume
C．capacity
D．competence
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单项选择题
Human development is based not only on inborn biological states, but also on patterns of to social knowledge.
A．access
B．contact
C．acquaintance
D．path
单项选择题
Which of the following is closest in meaning to the sentence That is what going to war means; it means saying that might is right. (Lines 12--13,Para. 2)
A．Only those who are powerful should go to war.
B．In a war only those who are powerful will win.
C．Those who are right should fight against those who are wrong.
D．Those who fight believe that the winner is right and the loser wrong.
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