试题题干
Fill in the blanks with an item as required.
With a subordinator：
In some situations the pursuit of knowledge may become harmful 
it is combined with wisdom.
参考答案
试题解析
本题考查从属连接词的用法。分析句子结构可知，空处引导条件状语从句，又根据句意可知，空处表示“除非”，故应用 unless。
Fill in the blanks with an item as required.
With a subordinator：
In some situations the pursuit of knowledge may become harmful it is combined with wisdom.
本题考查从属连接词的用法。分析句子结构可知，空处引导条件状语从句，又根据句意可知，空处表示“除非”，故应用 unless。