When answering this question, you can talk about different factors that make an advertisement effective, such as creativity, message clarity, emotional appeal, or the ability to grab attention. You might want to choose one factor you think is the most important and explain why, using examples if possible. For instance, you could say that grabbing attention is crucial because if people don’t notice the ad, they won’t remember the product. Or you could argue that a clear message is key so people understand what’s being advertised. Try to support your answer with reasons or real-life examples.

回答这个问题时，你可以谈论使广告有效的不同因素，如创意、信息清晰度、情感诉求或吸引注意力的能力。你可以选择你认为最重要的一个因素并解释原因，最好能举例说明。例如，你可以说吸引注意力至关重要，因为如果人们不注意广告，他们就不会记住产品。或者你可以认为清晰的信息是关键，这样人们才能理解所宣传的内容。尝试用理由或现实生活中的例子来支持你的答案。