According to the speaker, he saw one study that compared women in Nigeria, one of the most chaotic and violent and corrupt and poorest countries in Africa, to women in North America. And the highest rates of depression were . That was also the wealthiest group.

Leaders of the world’s wealthiest nations have promised 20 billion dollars to improve food security in poor countries. A: 世界最富裕国家的领导人已经承诺要拿出200亿美元改善穷国的食品安全。 B: 世界最富裕国家的领导人已经承诺要用200亿美元改善穷国的食品安全。 C: 世界富国领导说了算。他们承诺在贫穷的国家投200亿美元搞食品安全。 D: 在世界上，最富裕的国家就是领导。他们已经承诺要拿出200亿美元改善穷国的食品安全。

Leaders of the world’s wealthiest nations have promised 20 billion dollars to improve food security in poor countries． A: 世界最富裕国家的领导人已经承诺要拿出200亿美元改善穷国的食品安全。 B: 世界最富裕国家的领导人已经承诺要用200亿美元改善穷国的食品安全。 C: 世界富国领导说了算。他们承诺在贫穷的国家投200亿美元搞食品安全。 D: 在世界上，最富裕的国家就是领导。他们已经承诺要拿出200亿美元改善穷国的品安全。