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    精英家教网 > 高中英语 > 题目详情
    4．-I wonder why the thinnest plastics bags，though ________，are still in use here．
    -Well，it's no easy job to solve this problem effectively．（　　）
    A．banningB．bannedC．to banD．having banned

    分析 -我想知道为什么被禁止了的超薄塑料袋在这个地方仍然在使用．
    -哦，要有效解决这个问题并不容易．

    解答 答案：B
    题干中though引导让步状语从句，即though the thinnest plastics bags are banned，从句中省略了与主句相同的主语和系动词，故选B．

    点评 省略句是英语的一种习惯用法．按照语法的分析，句子应该具备的成分，有时出于修辞上的需要，为了避免重复、突出新信息使上下文紧密连接的修辞手段．单词，短语，分句，都可以省略．

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