用于甲型血友病治疗的主要血液成分是（）

A.冷沉淀

B.冰冻血浆

C.血浆蛋白

D.红细胞

E.血小板

I usually do my homework _____than Mary. But she makes fewer mistakes because she is_____.

A．more quickly; more careful

B．more quickly; more carefully

C．much quicker; more careful

D．much quicker; more carefully