下列高分子材料中，主要作肠溶衣的是
A．羟丙基甲基纤维素B．甲基纤维素C．丙烯酸树脂ⅡD．聚乙二醇E．川蜡
参考答案：C
—Who's that girl?
—She's _______. [ ]
A. my sister
B. ten
C. in pink
D. nice
I felt it is right _____ you should know. [ ]
A. whether
B. and
C. that
D. how
