It is suggested in Paragraph 1 that 'behavioral' ads help advertisers to A．ease competition among themselves. B．lower their operational costs. C．avoid complaints from consumers. D．provide better online services.
A.ease B. B．lower C. C．avoid D. D．provide E.
【参考答案】
B 推断题。根据题干定位到第一段。此段大意为，在互联网时代，有一半的广告预算可以大大缩减，因为企业可以通过观察人......