题目内容
19． Bill tried his best to prepare the exam，he still failed．（ ）| A． | If | B． | Because | C． | So | D． | Although |
分析 虽然比尔尽他最大的努力做好了考试的准备，他还是失败了．
解答 正确答案：D．A表示如果，引导条件状语从句．B表示因为，引导原因状语从句．C表示原因，所以．D表示虽然、即使，引导让步状语从句．根据题干可知比尔虽然尽全力准备了考试，但他还是失败了，故选择D．try one's best表示尽某人最大的努力．
点评 本题考查连词辨析，基础题，熟悉每个选项的含义及用法，再根据题干进行选择．
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