辨析：be made of与be made from

词条	用法	例句
be made of	意为“由……制成”，表示看得出原材料，其原材料在制作过程中仅发生物理变化	The desk is made of wood. 这张桌子是由木头制成的。
be made from	意为“由……制成”，表示看不出原材料，其原材料在制作过程中发生了化学变化	This kind of paper is made from wood. 这种纸是由木头制成的。

习题练习

单选题

Desks and chairs _____ wood,while paper _____wood,too.

are made from; is made of

are made up of; is made of

are made into; are made out of

are made of; is made from

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