___raw materials into useful products is called manufacturin
___raw materials into useful products is called manufacturing .
A transform B transforming C being transformed D when transforming
A transform B transforming C being transformed D when transforming
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___raw materials into useful products is called manufacturing.
A transform B transforming C being transformed D when transforming
答案：B
解析：题干的主句为XX is called manufacturing 所以填入的内容得做句子的主语成分,动词原形不能做主语,A排除,D选项是时间状语,也不能做主语,排除.此处transform into是“把……变成……”的意思,根据句意,用主动态,直接加ing即可.
句意：把原材料变为有用的产品（的过程）就被称为制造.
有问题请追问.
A transform B transforming C being transformed D when transforming
答案：B
解析：题干的主句为XX is called manufacturing 所以填入的内容得做句子的主语成分,动词原形不能做主语,A排除,D选项是时间状语,也不能做主语,排除.此处transform into是“把……变成……”的意思,根据句意,用主动态,直接加ing即可.
句意：把原材料变为有用的产品（的过程）就被称为制造.
有问题请追问.
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