The sharing economy is a little like online shopping, which started in America 15 years ago. At first, people were worried about security. But having made a successful purchase from, say, Amazon, they felt safe buying elsewhere. Similarly, using Airbnb or a car-hire service for the first time encourages people to try other offerings. Next, consider eBay. Having started out as a peer-to-peer marketplace, it is now dominated by professional "power sellers" (many of whom started out as ordinary eBay users). The same may happen with the sharing economy, which also provides new opportunities for enterprise. Some people have bought cars solely to rent them out, for example. Incumbents are getting involved too. Avis, a car-hire firm, has a share in a sharing rival. So do GM and Daimler, two car-makers. In future, companies may develop hybrid models, listing excess capacity (whether vehicles, equipment or office space) on peer-to-peer rental sites. In the past, new ways of doing things online have not displaced the old ways entirely. But they have often changed them. Just as Internet shopping forced Walmart and Tesco to adapt, so online sharing will shake up transport, tourism, equipment-hire and more. The main worry is regulatory uncertainty. Will room-renters be subject to hotel taxes, for example? In Amsterdam officials are using Airbnb listings to track down unlicensed hotels. In some American cities, peer-to-peer taxi services have been banned after lobbying by traditional taxi firms. The danger is that although some rules need to be updated to protect consumers from harm, incumbents will try to destroy competition. People who rent out rooms should pay tax, of course, but they should not be regulated like a Ritz-Carlton hotel. The lighter rules that typically govern bed-and-breakfasts are more than adequate. The sharing economy is the latest example of the Internet's value to consumers. This emerging model is now big and disruptive enough for regulators and companies to have woken up to it. That is a sign of its immense potential. It is time to start caring about sharing.

单选题 According to Paragraph 1, which is NOT true?

【正确答案】 D

【答案解析】解析：选项A对应原文第一段第三句：But having made a successful purchase from，say，Amazon，they felt safe buying elsewhere．可见第一次网络交易是由亚马逊完成的。该项表述是正确的。选项B对应最后一句：Some people have bought cars solely to rent them out，for example．该表达正确。即不是答案。选项C对应原文开头两句：The sharing economy is a little like online shopping，which started in America 15 years ago．At first，people were worried about security．可见该项表述也是正确的，即非答案。选项D对应原文倒数第二句：The same may happen with the sharing economy，which also provides new opportunities for enterprise．可见原文说共享经济为企业提供机会，但并没说不为个人提供机会，故选项D为答案。

单选题 Walmart and Tesco are mentioned to ______.

【正确答案】 B

【答案解析】解析：根据题干中的“Walmart and Tesco”定位到第二段最后一句：Just as Internet shopping forced Walmart and Tesco to adapt，so online sharing will shake up transport，tourism，equipment-hire and more．文章提到Walmart和Tesco是为了说明下半句：网络共享会重组交通运输业、旅游业、设备租赁业等行业。该句突出一个词“online sharing”，而四个选项中只有选项B含有这个词，故本题选项B，show the potential of online sharing(显示网络共享的潜力)为答案。

单选题 One potential problem with the sharing economy is ______.

【正确答案】 A

【答案解析】解析：根据题干“one potential problem with the sharing economy(共享经济的一个潜在问题)”定位到第三段首句：The main worry is regulatory uncertainty．其中，“potential problem”对应“main worry”，故答案原文为“regulatory uncertainty(管理的不确定性)”。四个选项分别为：A项difficulty in supervision(监管困难)；B项disruption of economy(扰乱经济)；C项instability of market(市场的不稳定性)；D项uncertainty of firms(企业的不确定性)。这四个选项中，与regulatory uncertainty接近的选项是A，故该项为答案。

单选题 We learn from the last paragraph that ______.

【正确答案】 C

【答案解析】解析：选项A属于无中生有，错误。选项B对应该段第一句：The sharing economy is the latest example of the Internet's value to consumers．可见共享经济体现出互联网对于客户的价值，而非体现顾客价值，故该项错误。选项C对应该段第二句：This emerging model is now big and disruptive enough for regulators and companies to have woken up to it．其中“have woken up to”=“realize”，“it”指代“the sharing economy”，故该项正确。选项D属于无中生有。综上所述，本题答案为选项C。

单选题 The best title for the text may be ______.

【正确答案】 C

【答案解析】解析：主旨题可以通过各段首句提取。第一段首句：The sharing economy is a little like online shopping，which started in America 15 years ago．第二段首句：Incumbents are getting involved too．第三段首句：The main worry is regulatory uncertainty．第四段首句：The sharing economy is the latest example of the Internet's value to consumers．分析：文章反复出现和讨论的关键信息是the sharing economy(共享经济)，而提到online shopping仅仅是为了作比较，故我们可以先排除选项A。选项D原文有提到，但是没有提到soon一词，且这个词过于绝对，该项可以排除。选项B在原文也有体现，但是不够全面，因为第三段首句的“main worry”告诉我们该段主要讨论共享经济的主要问题，故选项C表述比较全面，即为答案。