Read the underlined sentences in the article and think about the benefits of writing them like this

Enrich the content of the article, guide readers to think, and emphasize key points.

1. The underlined sentences provide more information and make the article richer.

2. Underlined sentences often cause readers to think, thus stimulating readers’ interest in reading.

3. Underlined sentences usually emphasize the key points of the article and help readers better understand the main idea of ??the article.