Marketers need to know which of the four stages a product is in so as to _____.
A、promote its production
B、work out marketing policies
C、speed up its life cycle
D、increase its popularity
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试题解析
细节题。第二段首句指出,产品的生命周期对营销员的重要性在于:对产品的不同阶段,要采用不同的营销策略,因此B项为本题答案。