患者不能按指令作伸舌、刷牙动作，进食时却可无意地将留在唇边的米粒自动伸舌舔摄。最可能是()

A．结构失用症

B．观念运动性失用症

C．观念性失用症

D．肢体运动性失用症

E．癔病

-Four dollars a pair? Ithink it's a bit too much.

-If you buy three pairs, the price for each will _______to three fifty.    [      ]

A. come down                  

B. take down    

C. turn over                  

D. go over