单项选择题

Questions 26-30 are based on the following passage:
  In a global survey released in 2012,half the responders admitted to buying things they really did not need.Two thirds are worried that consumers are buying too much.Such concerns may be justified.Many consumers have become trapped in debt.Researchers say that instead of making us more satisfied,high levels of consumption may lead to greater stress and unhappiness!
  As consumers,we are subjected to a great amount os marketing.What is the goal of marketers?To turn wants into needs.Marketers know that consumer behavior is driven largely by emotion.So advertisements and the shopping expperience itself are disigned for maximum emotional appeak.
  When you ask a consumer:Why do you buy so much?He or she may answer:I want to improve my quality of life.It is natural that people want a better life.Advertiser bombarb us with messages that all of out desires--better bealth,security,ralief from stress,and closer relationships--can be achieved by making the right purchases.
  But actually,as our number of possessions increases,our quality of life can actually decrease.Additonal time and money are needed to care for more materail things.Stress levels rise because of pressure from debt,and there is less time for family and friends.So you should protect yourself from becoming a vivtim of clever mareketers.You should put emotion aside,and compare marketing promises with reality.
 

 

The first paragraph tells us that（）.

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