【正文】 extract, relying instead on artificial imitations to achieve the flavour.46. what do we learn about chemist john pemberton?a)He used a strangely potent ingredient in a food supplementb)he created a drink containing alcohol without breaking lawc)he became notorious because of the coca drink he developedd)he risked breaking local law to make a drink with coca leaves47. what does the passage say about kola nuts?a)their mercial value was first discovered by portuguese settlerb) they contain some kind of energy boost not found in any other foodc) many were shipped to europe in the late 19th century for medicinal usd) they were strange to the europeans when first imported from west africa48. how e kolaextract colas became popular?a)cocaine had bee notoriousc) were set up to sell themb)alcoholic drinks were prohibitedd) rights were sold to bottle the soda49. what is known about the taste of cocacola?a)it was so designed as to create addiction in consumersb) it still relies on traditional kola nut extractc) it has bee more popular among the old.d) it has remained virtually unchanged since its creation50. what is the passage mainly about?a)the evolution of cocacolac)the medicinal value of cocacola.b)the success story of cocacolad) the business strategy of cocacola.Passage twoQuestions 51 to 55 are based on the following passageTwenty years ago, the urban land institute defined the two types of cities that dominated the us landscape: smaller cities that operated around standard 95 business hours and large metropolitan areas that ran all 24 hours of the day. analyzing and paring cities using the lens of this basic divide gives interesting context to how investment capital flows and housing prices haveIn recent years, many midsized cities have begun to adopt a middleoftheroad approach incorporating the excitement and opportunity of large cities with small cities39。 quiet after cities are beginning to make waves in real estate rankings and attract more reaestate investment. what is underlying this new movement in real estate, and why do these cities have so much appeal18hour cities bine the best of 24hour and 95 cities, which contributes to downtown revitalization. for decades, many downtown cores in small to midsized cities were abandoned after work hours by workers who lived in the suburbs. movement out of city centers was widespread and downtown tenants were predominantly made up of the working poor. this generated littleommerce for downtown businesses in the evenings, which made business and generating tax renenue for municipal upkeep difficult. with the rise of a new concept in urban planning that aims and more conver increasing popularity for urban areas treal estate pushes in major cities like san francisco or new york, has inspired a type of forward thinking urbanity and in smaller citiesTransforming downtown areas so that they incorporate modern housing and improved walkability to local restaurants, retail and entertainment especially when bined with improved infra structure for cyclists and public transitmakes them appeal to a more affluent demographic. these adjustments encourage employers in the knowledge and talent industries to keep their offices downtown. access to foot traffic and proximity to transit allow the type of entertainmentoriented businesses such as bars and restaurants to stay open later, which attracts both younger, creative workers and baby boomers nearing retirement alike. because of their smaller size, most keep hours that allow people to enjoy themselves, then have some quiet after midnight, as opposed to large ajor cities like new york, where the buzz of activity is ongoing.These 18hour cities are rapidly on the rise and offer great opportunities for hoinvestment in many of these cities such as denver, a diverse and vigorous economy attracted to the urban core has offered stable employment for residents. the right urban mix has propped up home occupancy increased property values, and attracted significant investment capital.51. what do we learn about american cities twenty years ago?a)they were divided into residential and business areasb)their housing prices were linked with their prosperity.c)there was a clear divide between large and small citiesd) they were places where large investment capital flowed.52. what can be inferred from the passage about 18hour cities?a) they especially appeal to small businessesb)they have seen a rise in property prices.c)they have replaced quiet with excitementd) they have changed america39。s landscape53 years ago, many downtown cores in small to midsized cities().a)had hardly any business activityc) exhibited no signs of prosperityb)were crowded in business hoursd) looked deserted in the evenings4. what characterizes the new downtown areas in 18hour cities?a）a sudden emergence of the knowledge industry.b)flooding in of large crowds of migrant workersc) housing and improved infrastructured) more fortable life and greater upward mobility.55. what have 18hour cities brought to the local residents?a)more chances for promotion.c) greater cultural diversity.b) healthier living environment.d)Better job opportunities2017年六級(jí)閱讀（第二套）Passage one　　Questions 46 to 50 are based on the following passage.　　In the beginning of the movie / robot a robot has to decide whom to save after two cars plunge into the waterdel spooner or a child. even though spooner screamssave her save robot rescues him because it calculates that he has a 45 percent chance of survival pared to sarah39。s ll percent. the robots decision and its calculated approach raise an important question:would humans make the same choice and which choice would we want our robotic counterparts to make?　　Isaac asimov evaded the whole notion of morality in devising his three laws of robotics, which hoId that I. robots cannot harm humans or allow humans to e to harm。 2. robots must obey preservation, unles