单选题The exchange with the store clerk (line 86) is used to represent ______.A an example of recyclingB an illustration of the value of human emotionsC a poorly understood and uncommon phenomenonD a particular difficulty in economic analysisE a transaction
题目
单选题
The exchange with the store clerk (line 86) is used to represent ______.
A
an example of recycling
B
an illustration of the value of human emotions
C
a poorly understood and uncommon phenomenon
D
a particular difficulty in economic analysis
E
a transaction that is easily accounted for