According to the passage, which of the following statements is TRUE?

【定位】①倒数第三段第二句：“Ending the ban will also likely end an industry that has sprung up near dozens of the schools that enforce the ban．”；②第一段第一句“When Bill de Blasio ran for New York City mayor last year…which is not equally enforced in all schools．”；③倒数第三段第一句“The ban was put into place in 2007 under mayor Michael Bloomberg．”。
【答案详解】细节题。根据定位句①可以反推出D项正确。A项明显错误。根据定位句②，B项错误。根据定位句③，c项时间与人物都不对。故选D。
【高频词汇】
1．citywide全市的 2．device装置 3．discriminatory差别对待的
4．ceUphone手机 5．enforce实施 6．install安装
【难句解析】
Where the ban is enforced，it puts a disadvantage on students who Can’t afford to pay to store their phones．
该句子中“it”指的是“where the ban is enforced”。“who”引导的定语从句修饰students。