The desk is made from （或者of）wood.
这里我觉得from和of都能用.
注：
make of 用什么什么制造,可以看出原材料的原始样子.eg.this desk is made of wood.
make from 用什么为原材料制造的,原材料的原始样子可能已经消失.eg.The cheese is made of milk.
The paper is made from the tree.
The desk is made from （或者of）wood.
这里我觉得from和of都能用.
注：
make of 用什么什么制造,可以看出原材料的原始样子.eg.this desk is made of wood.
make from 用什么为原材料制造的,原材料的原始样子可能已经消失.eg.The cheese is made of milk.
The paper is made from the tree.