Mary got good grades in school,              excited she is! [ ]

A. What

B. What a

C. How

D. How a

赭石的功效是（）

A.平肝潜阳，清肝明目

B.平肝潜阳，凉血止血

C.平肝潜阳，软坚散结

D.平肝潜阳，祛风止痒

E.平肝潜阳，息风止痉