Question 2 is based on the conversation you have just heard.

M: Tonight, we have a very special guest. (1) [Mrs. Anna Sanchez is a three-time Olympic champion and author of the new book To the Edge.] Mrs. Sanchez, thank you for joining us.

W: Thank you for having me.

M: Let’s start with your book. What does the title “To the Edge” mean? What are you referring to?

W: (2) [The book is about how science and technology has helped push humans to the edge of their physical abilities.] I argue that in the past 20 years, we’ve had the best athletes the world has ever seen.

M: But is this a fair comparison? How do you know how, say, a football player from 50 years ago would compare to one today?

W: Well, you are right. That comparison would be perhaps impossible to make. But the point is more about our knowledge today of human biochemistry, nutrition, and mechanics. (3)[ I believe that while our bodies have not changed in thousands of years, what has changed is the scientific knowledge. ]This has allowed athletes to push the limits of what was previously thought possible.

M: That’s interesting. Please tell us more about these perceived limits.

W: The world is seeing sports records being broken that could only be broken with the aid of technology, whether this be the speed of a tennis serve or the fastest time in a hundred-meter dash or 200-meter swimming race.

M: (4)[ Is there any concern that technology is giving some athletes an unfair advantage over others? ]

W: That is an interesting question and one that has to be considered very carefully. Skis, for example, went from being made of wood to a metal alloy, which allows for better control and faster speed. There’s no stopping technological progress. But, as I said, each situation should be considered carefully on a case-by-case basis.

2. What is the woman’s book mainly about? （女士的书主要讲了什么？）

解析：D。在录音开始部分，男士介绍女士的时候提到了女士的新书《到达极限》，接着男士又围绕书的标题和具体内容向女士提问，女士说到她的这本书主要讲科学和技术如何帮助人类达到他们的体能极限，D项中的How technology has helped为原词复现，athletes对应录音中的humans，scale new heights对应录音中的to the edge of their physical abilities，D项与录音内容相符，因此选D。

错项排除：录音中，女士提到人类对于human biochemistry、nutrition和mechanics等学科的理解，但这并非书中的内容，A项的human biochemistry和B项的nutrition是针对问题进行的细节拼凑，故均可排除。C项的scientific training是指进行科学合理的训练，只是利用science进行细节拼凑，但录音中并没有提到和training相关的信息，故排除。