阅读理解

    We can see how the product life cycle works by looking at the introduction of instant coffee.When

it was introduced,most people did not like it as well as "regular" coffee and it took several years to gain

general acceptance (introduction stage). At one point,though,instant coffee grew rapidly in popularity

and many brands were introduced (stage of rapid growth)．. After a while people became attached to

one brand,sales leveled off (stage of maturity). Sales went into a slight decline (衰退) when freeze

dried coffees were introduced (stage of decline).

     The importance of the product life cycle to marketers is this:Different stages in the product life cycle

call for different strategies.The goal is to extend product life so that sales and profits do not decline.One

strategy is called market modification.It means that marketing managers look for new users and market

sections.Did you know,for example,that the backpacks that so many students carry today were originally

designed for the military?

    Market modification also means searching for increased usage among present customers or going for

a different market,such as senior citizens.A marketer may re－position the product to appeal to new

利润是指企业在一定会计期间的经营成果。下列选项中不属于企业利润的是 ( )。

A．投资收益

B．营业利润

C．利润总额

D．净利润