________raw materials into useful products is called manufacturing.

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问题 ________raw materials into useful products is called manufacturing.

选项 A、Transform
B、Transforming
C、Being transformed
D、When transforming

答案B

解析 分析句子结构并结合选项可知,is之前为动名词短语作主语。根据句意可知,transform的逻辑主语应为“人”,且两者之间是主谓关系,所以应用动名词的一般式。故选B。
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本试题收录于: 英语题库普高专升本分类
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