题目内容
18．How terrible it is that the water still can't be drunk ______ it has been given medical treatment!（ ）| A． | although | B． | because | C． | when | D． | if |
分析 虽然水已经被医疗处理，但仍然不能喝，多么可怕啊．
解答 答案：A；although虽然；because因为；when当…的时候；if如果；根据句意，"How terrible it is that the water still can't be drunk 水仍然不能喝，多么可怕"和"it has been given medical treatment它已经被医疗处理"，可知二者之间是转折关系；although引导让步状语从句，意为"尽管，虽然"；故选A．
点评 连词在句子中主要起联系上下文的作用，他们之间的区别就是表示逻辑关系的不同，所以在解题时先要理解上下文含义，然后根据上下文逻辑关系选择合适的连词．
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