在英语二的考研阅读题中，考生需要仔细阅读长篇文章，并针对文章内容回答问题。以下是一篇原创的英语二考研阅读题答案：
问题：根据以下文章，回答问题。
文章：
In recent years, the popularity of online learning has surged. Many people believe that online learning offers numerous benefits, such as flexibility, convenience, and cost-effectiveness. However, some experts argue that traditional classroom learning is still superior in terms of quality and effectiveness.
The main advantage of online learning is its flexibility. Students can access course materials and lectures at any time and from anywhere. This allows them to study at their own pace and schedule. Moreover, online learning eliminates the need for commuting, saving both time and money.
On the other hand, traditional classroom learning offers a more interactive environment. Students can engage in discussions, ask questions, and receive immediate feedback from instructors. This face-to-face interaction can enhance the learning experience and facilitate better understanding of the subject matter.
Despite the benefits of online learning, some experts argue that it lacks the personal touch that traditional classrooms provide. They believe that students may feel isolated and disconnected from their peers, which can negatively impact their motivation and academic performance.
Question: What is the main advantage of online learning according to the article?
Answer: The main advantage of online learning, as mentioned in the article, is its flexibility, which allows students to access course materials and lectures at any time and from anywhere, studying at their own pace and schedule.
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