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15、Since the baby milk powder was found to be polluted, there has been universal doubt _____ other food products are safe to eat. 

A. whether             B. that                C. what             D. how

15、A.

解析： 考查名詞性從句.在 doubt 后面帶有同位語從句, 因含有“是否”之意, 故應(yīng)填whether。

請在這里輸入關(guān)鍵詞：
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Since the baby milk powder was found to be polluted, there has been universal doubt _____ other food products are safe to eat. 

A. whether             B. that                C. what             D. how

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科目：高中英語 來源：2013-2014學年浙江省五校高三第一次聯(lián)考英語試卷（解析版） 題型：單項填空

Since the baby milk powder was found to be polluted, there has been universal doubt _____ other food products are safe _____.

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北京先知文化中心2011屆高三模擬測試試題

Since the baby milk powder was found to be polluted, there has been universal doubt _____ other food products are safe to eat. 

A. whether             B. that                C. what             D. how

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