The Direct Method teachers believe that direct association of ______ is of great importance in language teaching.

A．pronunciation and spelling

B．words and spelling

C．words and grammar

D．form and meaning

奠定了中医学理论基础的医学著作是 [ ]

A、《黄帝内经》

B、《伤寒杂病论》

C、《千金方》

D、《本草纲目》