a computer works is a question not everyone cad answer quickly.A. That；whichB. How；thatC

问题补充：

a computer works is a question not everyone cad answer quickly.

A. That；which

B. How；that

C. What；which

D. When；that

答案：

A. That；which

(答案→)B. How；that

C. What；which

D. When；that

解析：考查名词性从句。句中how引导主语从句，在从句中作方式状语，that引导同位语从句，解释说明名词question，故选B。