Questions 31 to 35 are based on the following passage.
【真题来源：2017年6月大学英语四级真题（第二套）Part Ⅲ，Section C，第46-50题】
Passage One
The report says America's urbanization will continue to be the most significant issue affecting the industry, as cities across the country imitate the walkability and transit-oriented development making cities like New York and San Francisco so successful.
As smaller cities copy the model of these "24-hour cities", more affordable versions of these places will be created. The report refers to this as the coming of the "18-hour city", and uses the term to refer to cities like Houston, Austin, Charlotte, and Nashville, which are "positioning themselves as highly competitive, in terms of livability, employment offerings, and recreational and cultural facilities".
Another trend that looks significant in 2015 is that America's largest population group, Millennials (千禧一代), will continue to put off buying a house. Apartments will retain their appeal for a while for Millennials, haunted by what happened to home-owning parents.
This trend will continue into the 2020s, the report projects. After that, survey respondents disagree over whether this generation will follow in their parents' footsteps, moving to the suburbs to raise families, or will choose to remain in the city center.
Another issue affecting real estate in the coming year will be America's failing infrastructure. Most roads, bridges, transit, water systems, the electric grid, and communications networks were installed 50 to 100 years ago, and they are largely taken for granted until they fail.
The report's writers state that America's failure to invest in infrastructure impacts not only the health of the real-estate market, but also our ability to remain globally competitive.
Apart from the specific trends highlighted above, which cause some investors to worry, the report portrays an overall optimism borne by the recent healthy real-estate "upcycle" and improving economy. Seventy-four percent of the respondents surveyed report a "good to excellent" expectation of real-estate profitability in 2015. While excessive optimism can promote bad investment patterns, resulting in a real-estate "bubble", the report's writers downplay that potential outcome in that it has not yet occurred.
According to the new report, real estate development in 2015 will witness________.
细节题。第一段指出，据一份新的报告可知，城镇化——人们从郊区迁移到市中心，将是2015年最大的房地产趋势。B项和原文相符，故答案为B。A、D项原文未提及，故排除。C项和原文不符，对小城市的关注并不是2015年房地产发展的趋势，故排除。
What characterizes "24-hour cities" like New York?
推理题。本题可以采取排除法。原文未涉及私家车的话题，故排除A项。B项中的竞争力出现在原文第三段，原文第三段指出，该报告称其为即将出现的“18小时城市”，这个词语指的是像休斯敦、奥斯汀、夏洛特和纳什维尔这样的城市，这些城市的定位是具有高度的竞争力，特别是在适宜居住性、就业机会、娱乐和文化设施方面。该竞争力指的是“18小时城市”的竞争力，不是“24小时城市”的竞争力，故排除。原文未涉及人和环境的话题，故排除D项。故答案为C。
Why are Millennials reluctant to buy a house?
细节题。第四段第二句指出，公寓对他们的吸引力将保持一段时间，因为他们被发生在他们已买了房的父母身上的事情所困扰。C项与原文相符，故答案为C。原文未涉及他们是否支付得起小公寓，故排除A项。原文未涉及房价太高的话题，故排除B项。D项原文未提及，故排除。
What might hinder real estate development in the U. S.?
细节题。第六段第一句指出，在即将到来的一年里，另外一个影响房地产发展的问题将是美国日渐衰弱的基础设施。原文中的failing对应D项中的worsening，即日益恶化的基础设施可能会阻碍房地产的发展，D项与原文相符，故答案为D。A、B、C项原文均未提及，故排除。
How do most of the respondents in the survey feel about the U. S. real-estate market in 2015?
推理题。第八段第二句指出，74％的被调查者表示对于2015年的房地产收益率持有“好到极好”的预期。因此可推断出，大部门受访者对于2015年的房地产市场是充满希望的，C项与原文相符，故答案为C。A、B、D项与原文不符，故排除。