关于外周神经冲动能否传入高级神经中枢引起疼痛的学说是()。
A.闸门控制学说
B.神经传导学说
C.牙本质传导学说
D.流体动力学理论
E.以上都不对
参考答案:A
--The weather is too cold ____ March this year. —It was still ____when I came here years ago.
A.for; colder
B.in; cold
C.in; hot
D.for; hotter
投资信托