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    15．-Those grammar rules are really hard to remember．
    -________．You know，practice makes perfect．（　　）
    A．It's hard to sayB．It's up to you
    C．You are not aloneD．You can't be serious

    分析 --那些语法规则确实很难记住．
    --你并不孤单．熟能生巧．

    解答 答案：C 考查语言交际．It"s hard to say很难说；It"s up to you由你决定；you are not alone你并不孤单；You can't be serious你不是说真的．根据句意，C项正确．

    点评 语言交际是灵活多变的，要注意根据语言环境具体问题具体分析．要做好这类题，需从以下三个方面着手：1．仔细审题，明确大意：首先要仔细审题，即在对话不完整的情况下，尽量弄懂该篇对话的大意和情景（如购物、看病、问路和应答、约会、口语应用等）．2．分析对话，试填答案：在解题过程中，要根据具体语境和上下文，分析对话中所缺部分、判断所缺的句子．3．全文复读，融会贯通：在试填好答案之后，应从头至尾再把对话读一遍，按照对话情境，中心内容，推理判断．

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