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【单选题】
完成选择 An old saying has it that half of all advertising budgets are wasted—the trouble is, no one knows which half. In the internet age, at least in theory, this fraction can be much reduced. By watching what people search for, click on and say online, companies can aim “behavioral” ads at those most likely to buy. It is suggested in paragraph 1 that “behavioral” ads help advertisers to _______.A.
lower their operational costs
B.
ease competition among themselves
C.
avoid complaints from consumers
D.
provide better online services
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