—I didn’t see her yesterday,I looked for her everywhere,but couldn’t find her.

—Oh,but you　　.She was working in the office.

A．must have

B．ought to

C．ought to have

D．can’t have

纤维性强、弹性大以及质地疏松的中药制片时选用的黏合剂最好是（）

A.淀粉浆

B.水

C.糖浆

D.糊精浆

E.不同浓度的乙醇