快乐论机制是指机体摄取食物不仅是为了消除饥饿,满足体内能量需要,而且是一种()
参考答案:快感寻求
I want to have a short talk with you. Could you spare a few minutes _____? [ ]
A. if necessary
B. if possible
C. if so
D. even if so
烧伤患者右小腿骨折石膏固定,局部消炎用哪种物理治疗效果较好
A.紫外线B.红外线C.超短波D.微波E.超声波