奇速英语

In the past, most people worked on their feet and moved their bodies all day, so they had lots of exercise. They also mostly ate ____1____ foods like fruit, vegetables, fish, and meat. Today, many people ____2____ in front of a computer all day at work and often eat a lot of sweet foods, or foods that are made in factories. This can be a big ____3____ to their health.

The disease that causes most deaths in the world today—three in every ten—is heart disease. ____4____ many of these deaths need not happen, and are caused because people have not exercised or eaten well enough. Not exercising, or eating unhealthy food, can sometimes cause ____5____ dangerous disease—diabetes (糖尿病). When someone has diabetes, there is too much ____6____ in their blood. In the last twenty years, more and more people have died ____7____ diabetes—and almost 10% of the world’s population now has this disease.

Many people are also ____8____ new health problems that are caused by computers and cell phones. When people stay for too long in front of a computer, they can ____9____ get problems with their eyes, arms, necks, and backs. And when they use computers and cell phones at night, it is often more difficult for them to _____10_____. Some scientists also think that cell phones may cause health problems because of a kind of energy which they produce called radiation (辐射).