学生啦：课时作业（三）Unit 1 Section II Extended readingProject阅读理解Does the amount of cash in a lost wallet influence how likely a person is to return it?Traditional economic theories suggest that the greater the attraction,the less likely we are to behonest..But a new study found altruism(利他主义)，and the powerful hate for viewing oneself asa"thief"are more important than the financial attraction.A team of researchers carried out a huge experiment conceming 355 cities in 40 countries.More than 17,000 similar wallets were dropped at public places,each containing a grocery list,akey,and three business cards in the local language using made-up names and an email address.Some had no money while others contained the equal amount of $13.45.According to the research,people on average returned 40%of wallets with no money in thembut 51%with money.It also shows extreme differences between countries.But although rates ofpeople's honesty varied greatly from country to country,one thing remained still similar.Walletswith money,compared to no money,raised reporting rates.In the US,the UK and Poland,they repeated the experiment with even more money:$94.15,which increased reporting rates by an average of 11%compared to the smaller amount.They alsofound that putting a key increased reporting rates by 9.2%.The findings,which run counter to a basic principle of classical economics,suggesthonesty,altruism and the self-image can sometimes be more influential than economicself-interest.A purely economic approach to behaviour suggests people would keep the wallets with thelarger amount of money due to the increased financial reward,but economics often doesn't explaina person's sense of honesty or self-image,according to behavioural scientists.Altruism alsoinfluenced the findings,the researchers said.Since the key is valuable to the owner but not thefinder,this pointed towards an altruistic concem in addition to the cost of negatively updatingone's self-image1.The author mentions traditional economic theories in Paragraph 1 in order toA.introduce a topicB.attract readers'interestC.add some background informationD.describe some traditional theories2.What's the average reporting rate of a wallet with $94.15 inside?A.11%B.20.2%C.51%.D.62%.3.What does the underlined phrase"run counter to"in Paragraph 5 mean?A.Go against.B.Similar to.C.Agree with.D.Focus on.4.What's the main idea of the text?A.Traditional economic theories have already been old-fashioned.