you understand this rule, you’ll have no further difficulty.
A.UntilB.UnlessC.ThoughD.Once在线课程D
解析：
试题
分析：考查连词：A. Until直到，B. Unless除非，C. Though虽然，D. Once一旦，句意是：一旦你理解了规则，你就不再有困难了。选D。考点：考查连词
点评：连词的考查在于辨别不同的连词含义，在做题时注意上下文的逻辑关系。
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you understand this rule, you’ll have no further difficulty.A.UntilB.UnlessC.ThoughD.Once
编辑：chaxungu时间：2026-04-24 12:50:25分类：高中英语题库
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