Do you know desks and chairs are made _wood -Yes ,you are right ,and paper is made _ wood .A.of

问题描述:

Do you know desks and chairs are made _wood -Yes ,you are right ,and paper is made _ wood .A.of

Do you know desks and chairs are made (of) wood -Yes , you are right , and paper is made( from ) wood .
注:
be made of ( 看得见原材料,物理变化)
be made from (看不见原材料,即发生化学变化)

of.from
看得出原材料的的,用of
看不出原材料的用from