A：可用洗洁精清除油污，发生了溶解现象
B：干冰可用于制造舞台云雾，分子间空隙变大
C：蛋白质遇重金属盐或高温会失去原有生理活性，发生的是化学变化
D：在鸡蛋清中加入饱和硫酸铵溶液，鸡蛋清会沉淀析出，发生的是物理变化
A、fat B、small C、big
The skin, an ________ part of your body and its largest organ, ________ as a barrier against diseases.
一Have you ___ the match?
——Yes．Our team has ______ the team from Sunshine Middle School．
