---What do you want to do next? We have half an hour before the basketball game starts.

---_______. Whatever you want to do is fine with me.

A．It doesn’t matter

B．It’s up to you

C．All right

D．That’s all right

下列高分子材料中，主要作肠溶衣的是

A．乙基纤维素

B．中基纤维素

C．邻苯二甲酸醋酸纤维素

D．聚乙二醇

E．丙烯酸树脂E