She is _____. She writes most _____ in our class. [ ]

A. careful, careful

B. carefully, carefully

C. carefully, careful

D. careful, carefully

下列可作防腐剂用的是（）

A.十二烷基硫酸钠

B.甘油

C.泊洛沙姆188

D.苯甲酸钠

E.甜菊苷