By far the most common difficulty in study is simple failure to get down to regular concentrated work. This difficulty is much greater for those who do not work to a plan and have no regular routine of study. Many students muddle along, doing a bit of this subject or that, as the mood takes them, or letting their work pile up until the last possible moment. Few students work to a set timetable. They say that if they did construct a timetable for themselves, they would not keep to it, or would have to alter it constantly, since they can never predict from one day to the next. According to the author, what is the most widespread problem in study? A Lack of a systematic plan for study. B Inability to create a study environment. C Distractions of routine activities from study.

考查要点：本题主要考查学生对文章主旨的把握能力，需要根据首段明确提出的观点，结合上下文分析选项的对应关系。

解题核心思路：

1. 定位关键句：文章首句直接点明“最常见的学习困难是无法进行定期集中工作”。
2. 关联后续内容：后文通过对比“没有计划和固定学习习惯的人”更易陷入困境，强化“缺乏系统计划”是核心问题。
3. 排除干扰项：选项B、C未在文中提及，选项D（拖延或堆积任务）是结果而非根本原因。

破题关键点：

• 首段首句是解题核心，需准确提取“regular concentrated work”的反面原因。
• 锁定原文关键词“plan”和“regular routine”，对应选项A中的“systematic plan”。

第一步：定位文章核心观点
文章首句明确指出“最常见的学习困难是无法进行定期集中工作”。后文通过描述学生“临时抱佛脚”或“无固定计划”的现状，进一步说明缺乏系统计划是导致这一困难的根本原因。

第二步：分析选项对应关系

• 选项A“Lack of a systematic plan for study”：
  对应文中“work to a plan”和“regular routine of study”，直接关联首段核心问题。
• 选项B“Inability to create a study environment”：
  文中未提及学习环境相关的内容，属于无关选项。
• 选项C“Distractions of routine activities from study”：
  虽然文中提到“routine”，但强调的是“无固定学习习惯”而非“日常活动的干扰”。
• 选项D（未列出，但根据分析）：若存在类似“procrastination”（拖延）的选项，属于结果而非原因。

第三步：排除干扰项
文章始终围绕“无计划”展开，未涉及环境或干扰因素，因此排除B、C。选项A最能概括首段提出的根本问题。