even the social scientist who is occupied with the study of what
are called institutions must draw his ultimate data (with [a] one
important exception mentioned below) from the experience of the
senses. this dependence of social studies upon sense perception is
certainly a wholesome reminder of the fundamental homogeneity of
the original data of science. for knowledge of the external world,
whether of things or of people, we continually come back to our five
senses in the end. ( ⓐ ), if a great mass of data relevant to social
science is sensory, we have also to admit an important collection that
is not ― namely the whole body of primary mental or psychological
experience. perception of mental pleasure and pain appears to have
the same universality as sensory experience. at all levels of culture,
sensations of simple happiness and unhappiness are as general as are
the experiences of seeing and hearing. it is of course true that no
person can experience the feelings of anyone other than himself; but
equally no one can see with another’s eyes or hear with another’s
ears. the grounds for belief in the sense experiences of other people
and the grounds for belief in their primitive psychological experiences
are thus both equally shaky, or equally firm.1. 윗글의 제목으로 가장 적합한 것은?
① belief in sensory experience
② the irresistibility of psychological experience
③ differences between sensory and psychological experiences
④ the importance of personal experiences in social science

2. 밑줄 친 [a] one important exception이 가리키는 것은?
① sense perception
② knowledge of the external world
③ mental or psychological experience
④ sensory experience

3. 다음 중 ( ⓐ )에 들어갈 가장 적합한 표현은?
① for example
② in other words
③ furthermore
④ nevertheless