A.The writer feels upset that there is no better system of classification than the familiar one of sweet, sour, bitter, salty。
B.Psychological perception of the taste is objective because no subjective judgement is involved.
C.It is extremely difficult to classify smell, as it's hard to make objective judgement on the stimulus.
D.The classification is subjective, for there is no relation between the perception and the stimulus.
Mr. Poe became the House of Representatives mainly because
A.he can make voters live a comfortable life.
B.he is a famous district judge for writing great poems.
C.he set a series of court judgement to shame criminals.
D.he punished a thief by forcing him to shovel manure.
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