Ads are designed to have an effect while ______ at, belittled, and all but ignor

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问题 Ads are designed to have an effect while ______ at, belittled, and all but ignored.

选项 A、being laughed
B、to laugh
C、laughing
D、been laughed

答案 A

解析在while引导的让步状语从句中，如果从句谓语动词为be的形式，这时从句中主语和be动词可省略。本题while being laughed=while they were being laughed，使用了被动语态的进行时形式，符合题意，故A正确。

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