【正确答案】
D
【答案解析】[听力原文]
M: Ouch, how can the sand be so hot when the water"s still cold? My feet feel like getting burnt.
W:
Now, Mark, were you sleeping when professor Brock gave that lecture on specific heat in physics class?
M: I didn"t come to San Diego on spring break to talk about professor Brock"s physics class.
W: I know, me neither. I was just answering your question, that"s all.
M: What question?
W: You weren"t even paying attention to your own question.
M: I was just complaining about the hot sand. Considering what the water"s like, I wonder how the sand can be so hot.
W: Well, professor Brock"s lecture on specific heat might give you a clue. Water has a higher specific heat than sand.
M: Then why is the sand so much hotter if water has a higher specific heat?
W: Don"t you remember?
Specific heat is the energy needed to raise the temperature of something.
If something has a high specific heat, like water, it takes more energy to raise its temperature.
M: I see.
So you are saying that something with a high specific heat, like water, doesn"t get hot as fast as something with a low specific heat, like sand, right?
W: Right. So sand gets hot faster during the day, that"s why it"s so hot while the water"s still cool.
M:
I guess you are right, I should pay more attention in class.
What do we know about Mark from the conversation?
[解析] 男士说在水还冷的情况下，怎么沙子会那么热，女士问他是不是在Brock教授物理课讲解比热的讲座上睡着了，对话中间女士又说男士没留意他自己的问题，她给男士解释了比热原理并回答了男士一开始的疑惑，男士听明白后在对话最后说自己应该在课堂上多注意听讲。从对话中可知，男士是“心不在焉的”，应选D。
①选项均表示He的性格特点，听音时要多留意有关He的性格习惯的信息。②男士与女士几轮对话后开始认真去了解沙子比水热的原因，但这是女士责怪他不认真听课后他才逐步去了解，并不能说明他是个好奇的人，故排除A；对话没有体现Mark“热心肠的”，可排除B；男士一直询问沙子比水热的原因，表明他不是个没有耐心的人，C也不对。