Question 12 is based on the passage you have just heard.

原文：

Passage Two

    Is there really a magic memory pill or a herbal recall remedy? (12)I have been frequently asked if these memory supplements work. You know, one of the first things I like to tell people when they ask me about the supplements, is that a lot of them are promoted as a cure for your memory. But your memory doesn't need a cure. What your memory needs is a good workout. So really those supplements aren't going to give you that perfect memory in the way that they promise. The other thing is that a lot of these supplements aren't necessarily what they claim to be, and you really have to be wary when you take any of them. (13)The science isn't there behind most of them. They're not really well-regulated unless they adhere to some industry standard. You don't really know that what they say is in there, isn't there. What you must understand is that those supplements, especially in some eastern cultures, are part of a medical practice tradition. People don't just go in a local grocery store and buy these supplements. (14)In fact, they are prescribed and they're given at a certain level, a dosage that is understood by a practitioner who's been trained. And that's not really the way they're used in this country. The other thing that people do forget is that these are medicines, so they do have an impact. (15)A lot of times people are not really aware of the impact they have, or the fact that taking them in combination with other medications might put you at increased risk for something that you wouldn't otherwise being countering or be at risk for.

12. What question is frequently put to the speaker?

解析：A。四个选项都与memory有关，且都由whether引导，听音时注意相关信息。录音一开始就提到：我经常被问及记忆力补品是否有效。A选项中whether是if的同义替换，为正确答案。B选项“才要是否有效”、C选项“锻炼是否有助于提高记忆力”和D选项“神奇的记忆力是否能保证成功”均不是男士被问到的问题，排除。