12月英语四级真题及答案3样稿

12月英语四级真题及答案Passage OneQuestions 11 to 15 are based on the following passage.The predictability of o

12 月英语四级真题及答案 PassageOne Questions11to15arebasedonthefollowing passage. Thepredictabilityofourmortalityratesis somethingthathaslongpuzzledsocialscientists. Afterall,thereisnonaturalreasonwhy2,500people shouldaccidentallyshootthemselveseachyearorwhy 7,000shoulddrownor55,000dieintheircars.Noone establishesaquotaforeachtypeofdeath.Itjust happensthattheyfollowaconsistentpatternyear afteryear. AfewyearsagoaCanadianpsychologistnamed GeraldWildebecameinterestedinthisphenomenon.He noticedthatmortalityratesforviolentandaccidental deathsthroughouttheWesternworldhaveremainedoddly staticthroughoutthewholeofthecentury,despiteall thetechnologicaladvancesandincreasesinsafety standardsthathavehappenedinthattime.Wilde developedanintriguingtheorycalled“risk