题目

阅读理解 Recently, many e-commerce platforms,including Didi Taxi, Ctrip, Fliggy, JD ad Taobao, have been uncovered that theyare cheating their frequent customers. Their ways are pretty clever. When thereare new users or conservative old users, they will give a quite appealing priceto attract them into registering and buying goods. However, their big data isnot that friendly to the stable users and frequent visitors. The system alwaysoffers them higher price for the same products or service. How does thishappen? According to the data analysis, the system knows clearly that althoughthey feel“诚信”是现代经济正常运行的主要保障。罗斯福新政的措施中，具有诚信机制作用的是( ) A．奖励农民，压缩农业产量                B．实行美元贬值，刺激出口 C．兴办公共工程，减少失业                D．政府对银行存款进行担保