[多项选择]（）是商业客观存在的基础。
A. 商品生产
B. 商品交换
C. 国内物流
D. 国际快递

In the preceding chapter, economic welfare was taken broadly to consist of that group of satisfactions and dissatisfactions which can be brought into relation with a money measure. We have now to observe that this relation is not a direct one, but is mediated through desires and aversions. That is to say, the money that a person is prepared to offer for a thing measures directly, not the satisfaction he will get from the thing, but the intensity of his desire for it. This distinction, obvious when stated, has been somewhat obscured for English-speaking students by the employment of the term utility——which naturally carries an association with satisfaction——to represent intensity of desire. Thus, when one thing is desired by a person more keenly than another, it is said to possess a greater utility to that person. Several writers have endeavored to get rid of the confusion which this use of words generates by substituting "utility," in the above s
A. a general sense of contentment with any individual being part of a group.
B. a basic duality or dichotomy between the amount of pleasures that one individual can experience and discontentment.
C. the act of measuring the amount of gratifications and dissatisfactions with a measure of value.
D. the relentless idea that people have to forfeit in expiation for their pleasures.