Question 15 is based on the conversation you have just heard.

听力原文：

W: There’s new data out today that confirms that many Americans are not good at math, and when it comes to everyday technology skills, we are dead last when compared to other developed countries. Here’s Gabrielle Emanuel of National Public Radio.

M:（12）Let’s start with the bad news that Americans are terrible at technology skills, using email, naming a file on a computer, using a link on a webpage, or just texting someone.

W: No country scored below the U.S.?

M: Only one country. Poland performed as poorly as we did.（13）Who came out the first? Japan did the best and then Finland. If you look at data about reading and math, you’ll notice something interesting. Younger adults who went to college or graduate school were doing pretty well.（14）In literacy, they were actually doing better than their peers in other countries.

W: So that’s a bit of good news.

M: （15）But when you look at Americans who have a high school diploma, they look a lot like other countries’ high school students. We have a lot of work to do. That is especially true when it comes to math. You go to the store and there’s a sale. Buy one, get the second one half off. You decide to buy two. How much do you pay?

W: You mean high school graduates can’t do this task in general?

M: You’re right. What does that tell us about our education system? Well, it tells us that we need to think about the preparedness of our students as they leaving high school.

W: Right. And schools, employers. In fact we all need to do something about it. Thank you, Gabrielle.

15. What do we learn from the conversation about American high school education?

解析：C。本题目为推理题。问题为：从对话中我们可知美国高中教育如何？出题点位置在转折处。根据原文“But when you look at Americans who have a high school diploma, they look a lot like other countries’ high school students. We have a lot of work to do.”，可知那些有高中证书的美国学生，他们看起来和其他国家高中生一样，但美国教育工作仍需努力。选项C）It has much room for improvement（还有很多可以提升的空间），与原文表达的内涵一致。此题目较难，需要在理解对话的基础上才能选出。