As is known to all the newly learnt words will soon be forgotten unless used in everyday

问题补充：

As is known to all, the newly learnt words will soon be forgotten unless used in everyday communication.

A. gradually

B. accurately

C. familiarly

D. frequently

答案：

A. gradually

B. accurately

C. familiarly

(答案→)D. frequently

解析：考查副词辨析。A逐渐地；B精确地；C熟悉地；D经常。句意：众所周知，新学的单词很快就会被遗忘，除非在日常交流中经常使用它们。根据句意可知，用frequently。故选D。