牙周病的局部促进因素如下，除外
A．牙石B．咬合创伤C．银汞悬突D．甜饮料E．食物嵌塞
参考答案：D
一高血压患者，测其血压为220／120mmHg，急起呼吸困难，不能平卧，双肺满布湿啰音。宜选用下列哪种血管扩张剂治疗（）
A.苄胺唑啉
B.卡托普利
C.硝酸甘油
D.硝普钠
E.硝苯地平
I turned down his invitation to dinner as I didn't want to ______ on him.
A．invade
B．disturb
C．interfere
D．impose
