What distinguishes an extended example from other types of examples?

单项选择题In the following introductory paragraph, what kind of motivator does the author apply? Even though multiple generations have now grown up glued to the flickering light of the TV, we still can’t let go of the belief that the next generation of technology is going to doom our kids. We blame technology, rather than work, to understand why children engage with screens in the first place.

单项选择题（6） T8钢的的室温平衡组织是：