سؤال إنجليزي للصف التاسع في القراءة والاستيعاب

Dan Buettner, an American writer and explorer, noticed that some very different places around the world have one thing in common: people there have a good chance of living to be 100 years old or more. He called these places 'blue zones'. The first thing he noticed about the inhabitants of blue zones was their healthy diet. They eat a lot of fruit and vegetables. They don't eat much meat but get their protein from beans, lentils or nuts. Their diets are low in sugar and salt.