举报
第七vv
从物理变化和化学变化这个角度讲,选A made of 比较好一些 (1) be made of … “由…制成”从制成品中能看出原材料,发生了物理变化 The bridge is made of stones. Desks and chars are made of wood. The coat is made of silk. (2) be made from … “由…制成”从制成品中看不出原材料,发生了化学变化 This kind of wine is made from grapes. Paper is made from wood. The cake is made from eggs and flour. The silk is made from cotton.