下列关于急性喉炎的病因，不正确的是（）。

A.急性鼻炎

B.急性咽炎

C.鼻窦炎

D.大声喊叫

E.烟酒过度

Many road accidents occurred because motorists could not ________ the speed of approaching vehicles.[      ]

A. conclude  

B. count

C. measure  

D. value