关于慢性化脓性上颌窦炎不正确的是（）。
A.上颌窦穿刺有脓性分泌物
B.鼻塞
C.头昏、头痛
D.视力下降
E.嗅觉减退或消失
参考答案：D
下列关于声音的说法正确的是 [ ]
A．声音是由物体振动产生的
B．“震耳欲聋”主要是指声音的音调高
C．“闻其声而知其人”主要根据声音的响度来判断的
D．声音在真空中不受阻力传播最快
---It is not a secret that CEOs of major companies earn a large amount each year.
--- I agree. ____ the hard economic times, it seems that their salaries have remained the same.
A．Apart from
B．Thanks to
C．Regardless of
D．In regard to
