【单选题】

In the field of marketing, consumer goods are

classed according to the way in which they are
(19) The two main categories are convenience goods and shopping goods. Two lesser types are specialty and unsought goods. It must be (20) that all of these types are based on the way shoppers think about products, not on the (21) of the products themselves. What is regarded as a convenience (22) in France (wine, for example) may be a specialty in the United States.
People do not (23) a great deal of time shopping for such convenience items as groceries, newspapers,toothpaste, and candy. The buying of convenience goods may be done (24) , as some families buy groceries once a week. Sometimes convenience products are bought on (25) : someone has a sudden desire for a sundae on a hot day. Or they may be purchased as emergency items.
Shopping goods are items for which customers search.They (26) prices, quality, and styles, and may visit a number of stores (27) making a decision.Buying an automobile is often done this way.
Specialty goods have characteristics that impel customers to make special efforts to find them. Price may be no consideration (28) Specialty goods can (29) almost any kind of products. Normally, specialty goods have a brand name or other distinguishing characteristics.
Unsought goods are items a consumer does not
(30) want or need or may not even know about.
(31) or advertising brings such goods to the consumer’s attention. The product could be something new on the market as the Sony Walkman once was or it may be (32) standard services, such as life insurance, for which most people will usually not (33) shopping.
A．usage
B．nature
C．price
D．value