What is the worrying trend the late Swedish academic has identified?

【精析】细节推断题。根据句(1)可知，已故瑞典学者汉斯·罗斯林发现了一个令人担忧的趋势：发达经济体内许多人不仅不知道世界正在变得更好，他们还认为情况恰恰相反，即发达经济体内很多人都认为世界正变得越来越糟。因此答案为A)。

What does the speaker say about globalization?

【精析】细节辨认题。句(2)中，讲话者说，全球化是确保所有国家共享经济繁荣的唯一出路，而不是只确保少数发达经济体的经济繁荣。因此答案为C)

What do we learn about half of the global population?

【精析】细节辨认题。句(3)中提到，事实上，全球半数人口都可以被视为中产阶级，这是自工业革命以来的第一次。因此答案为B)。

听力全文：

（1）The late Swedish academicHans Rosling has identified a worrying trend: not only do many people across advanced economies have no idea that the world is becoming a much better place, but they actually even think the opposite. This is no wonder,when the news focuses on reporting catastrophes,terrorist attacks, wars, and famines.

Who wants to hear about the fact that every day some 200,000 people around the world are lifted above the $2-a-day poverty line? Or that more than 300,000 people get access to electricity and clean water for the first time every day? These stories of people in low-income countries simply don't make for exciting news coverage. But, as Rosling pointed out in his book Factfulness , it's important to put all the bad news in perspective.

While it is true that globalization has put some downward pressure on middle-class wages in advanced economies in recent decades, it has also helped lift hundreds of millions of people above the global poverty line. If we really care about global welfare，（2）globalization is the only way forward to ensure that economic prosperity is shared among all countries and not only a select few advanced economies.

While some people glorify the past， one of the big facts of economic history is that until quite recently a significant part of the world population has lived under quite miserable conditions-and this has been true throughout most of human history.

While there were many long-lasting ups and downs, like the Great Depression or the recent Great Recession,the constancy of the long-run growth rate is actually quite miraculous. Low-income countries, including China and India， have been growing at a significantly faster pace in recent decades and are quickly catching up to the West. A 10% growth rate over a prolonged period means that income levels double roughly every seven years. It is obviously good news if prosperity is more shared across the globe.

While inequality within countries has gone up as a result of globalization，global inequality has been on a steady downward trend for several decades. This is mostly a result of the improvement of hundreds of millions of people's living standards.（3）In fact， for the first time ever since the Industrial Revolution,about half of the global population can be considered middle class.