题目内容

14．As Benjamin Franklin put it，"A house is not a home __  it contains food and fire for the mind as well as the body．"（　　）
A．sinceB．asC．onceD．unless

分析 正如本杰明．富兰克林所说的，"除非能同时给人的躯体和心灵提供饱暖，那这个地方就是家．"

解答 答案D．since"因为"，引导原因状语从句；as"当…时候"，引导时间状语从句；once"一旦，如果"，引导条件状语从句；unless"除非"，相当于if…not，引导条件状语从句．分析可知"A house is not a home"与"______it contains food and fire for the mind as well as the body．"之间是逻辑上的条件关系，可排除A和B两项，再根据句子所表达的意思可知：若选C项意思不通顺，排除C项，故答案选D．

点评 本题考查从属连词的用法．连词的用法辨析，要注意分析主从句之间的逻辑关系，再确定相应的连词，同时注意不同的连词的语义及用法区别．

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