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

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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 省略用法题。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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