The attitude that a scientist ------- applying a kind of food colorant scarcely indicates that she is -------, for she may simply carry the patent rights to another colorant which may replace the first.

A． mimic: humor
B． philosopher: ideal
C． instrumentalist: activity
D． skinflint: thrift
E． tactician: brilliance

A． absorbent
B． fleeting
C． unsurprising
D． sterile
E． dormant