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【题目】This product contains no________ colors;only natural substances are used.

A.commercialB.beneficial

C.officialD.artificial

【答案】D

【解析】

考查形容词辨析。句意:该产品不含人工色素,仅使用了自然物质。commercial商业的;beneficial有益的;official官方的;artificial人造的。根据“only natural substances are used.”可知,没有用人工色素。故选D。

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