2017年6月英语四级阅读答案：试卷一仔细阅读2（沪江网校版）

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51. B She succeeded in quitting smoking abruptly.
       
                52. D They were offered nicotine replacements.
       
                53. C It is encouraging.
       
                54. B needs some practice first.
       
                55. A They find it even more difficult.