大学英语：he death rate from the disease has been

　　1. he death rate from the disease has been increasing at an alarming speed for the past thirty years.

　　2. Die of 死于疾病;die from 死于外因

　　3. 时态题：Many operations that were considered impossible a few years ago are now performed every day in U.S. hospitals.

　　4. 时态题：In the recent past， medical researchers have begun to emphasize the fact that heart disease is associated with(与什么相联系) stress， smoking and a lack of(缺少) exercise.

　　5. Many are paying more attention to reducing stress in their lives.

　　6. The number of smokers in the United States is now far(副词用来强调) below the level of twenty years ago as many people succeed in breaking the habit and as fewer people take it up.

　　7. Benefit 受益(n.或v.); beneficial 受益的(adj.)

　　8. Increase 增加;decrease 减少