问题
选择题
____ 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
答案：B
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。
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