羊靥、鹿靥治疗甲状腺肿大的最早医家()
A.张仲景
B.孙思邈
C.葛洪
D.巢元方
E.华佗
参考答案:B
I don't know _____ to do with it. Will you please show me how? [ ]
A. where
B. when
C. how
D. what
汽车在纵向坡道上行驶时,随着道路坡度的增大,前轮的地面法向反作用力()
A.不断增大
B.不变
C.不断减小