眶下神经孔口外法局部麻醉时，注射针与皮肤所成夹角是（）
A.15°
B.30°
C.45°
D.60°
E.90°
参考答案：C
– It’s really nice of you to give me the ride!
–________
A．That’s right.
B．My pleasure.
C．I’m glad to hear that.
D．Oh, I like the ride.
下列哪个药可以治疗重症肌无力，还可治疗老年痴呆
A．氯琥珀胆碱B．溴新斯的明C．硝酸毛果芸香碱D．加兰他敏E．硫酸阿托品
