下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定l个最佳选项。

　　第一篇

　　The Tricks of Supermarkets

　　You may have wondered why the supermarkets are all the same. It is not because the

　　companies that operate them lack imagination. It is because they all aim at persuading people tobuy things.

　　In the supermarket, it takes a while for the mind to get into a shopping mode. This is why thearea immediately inside the entrance is known as the "decompression zone". People need to slowdown and look around, even if they are regulars. In sales terms this area is bit of a loss, so it tendsto be used more for promotion.

　　Immediately inside the first thing shoppers may come to is the fresh fruit and vegetablessection. For shoppers, this makes no sense. Fruit and vegetables can be easily damaged, so theyshould be bought at the end, not the beginning, of a shopping trip. But what is at work here? Itturns out that selecting good fresh food is a way to start shopping, and it makes people feel lessguilty about reaching for the unhealthy stuff later on.

　　Shoppers already know that everyday items, like milk, are invariably placed towards the backof a store to provide more opportunities to tempt customers. But supermarkets know shoppersknow this, so they use other tricks, like placing popular items halfway along a section so thatpeople have to walk all along the aisle looking for them. The idea is to boost "dwell time": thelength of time people spend in a store.

　　Traditionally retailers measure "football", as the number of people entering a store is known,but those numbers say nothing about where people go and how long they spend there. Butnowadays, a piece of technology can fill the gap: the mobile phone. Path Intelligence, a Britishcompany tracked people's phones at Gunwharf Quays, a large retailer centre in Portsmouth--notby monitoring calls, but by plotting the positions of handsets as they transmit automatically tocellular networks. It found that when dwell time rose by 1%, sales rose by 1.3%.

　　Such techniques are increasingly popular because of a deepening understanding about howshoppers make choices. People tell market researchers that they make rational decisions about whatto buy, considering things like price, selection or convenience. But subconscious forces, involvingemotion and memories, are clearly also at work.

　　31. In Paragraph 2, "decompression zone" is the area meant to __________.

　　A. prepare shoppers for the mood of buying

　　B. offer shoppers a place to have a rest

　　C. encourage shoppers to try new products

　　D. provide shoppers with discount information

　　32. Putting the fruit-and-vegetable section near the entrance takes advantage of shoppers' __________.

　　A. common sense

　　B. shopping habits

　　C. shopping psychology

　　D. concerns with time

　　33. Path Intelligence uses a technology to __________.

　　A. measure how long people stay at a store

　　B. count how many people enter a store

　　C. find out what people buy in a store

　　D. monitor what people say and do in a store

　　34. What happened at Gunwharf Quays showed that sales __________.

　　A. were reversely linked to dwell time

　　B. were in direct proportion to dwell time

　　C. were affected more by football than by dwell time

　　D. were affected more by dwell time than by football

　　35. The best title for the passage is __________.

　　A. New Technology Boosts Stores' Sales

　　B. How Shoppers Make Choices in Stores

　　C. The Science behind Stores' Arrangements

　　D. Rational and Irrational Ways of Shopping