what's your dress ---?Cotton.A:made of B:made from

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what''syourdress---?Cotton.A:madeofB:madefromwhat''syourdress---?Cotton.A:madeofB:madefromwhat''syourdr

what's your dress ---?Cotton.A:made of B:made from
what's your dress ---?Cotton.A:made of B:made from

what's your dress ---?Cotton.A:made of B:made from
A,反映的是经过加工的原材料
B,反映的是未经加工的材料
所以是A