下列属于公文供选择的数据项目的有( )。
A．签发人标志
B．发文字号
C．主送机关
D．抄送机关
参考答案：A,B,C,D
The price of oil is __________higher and higher, which doesn’t prevent people from owning a new car in many developed cities in China.
A．rising
B．raising
C．arising
D．arousing
( )属于水溶性固体分散体载体材料。
A．PEG6000B．丙烯酸树脂RS型C．β环糊精D．淀粉E．HPMCP
