【段1】①An old saying has it that half of all advertising budgets are wasted—the trouble is, no one knows which half. ②In the internet age, at least in theory, this fraction can be much reduced. ③By watching what people search for, click on and say online, companies can aim “behavioural” ads at those most likely to buy.
26.It is suggested in Paragraph l that “behavioural” ads help advertisers to
[A]lower their operational costs.
[B]ease competition among themselves.
[C]avoid complaints from consumers.
[D]provide better online services.
答案：A
问：26题A选项中的operational costs是对原文中什么信息的同义改写？
A : An old saying
B : advertising budgets
C : this fraction
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