多用于包隔离层，可增加衣层黏性、塑性和牢固性，并对片心起保护作用的是（）
A.糖浆
B.有色糖浆
C.滑石粉
D.胶浆
E.川蜡
参考答案：D
(2013·四川南充市第一次适应性考试)You look very beautiful in this dress and there is only one of this kind left here. I wonder if you would buy ________.
A．one
B．it
C．some
D．any
下列关于性质递变规律的叙述正确的是 [ ]
A.酸性：H2SiO3> H3PO4> HClO4
B.金属性：Al> Mg> Na
C.碱性：KOH> NaOH> LiOH
D.气态氢化物的稳定性：H2Se> H2S> H2O
