2017届北京市房山区高考英语完形填空基础训练（13）_高考复习指南

　　for everybody."

　　"Cutting the

　　to the level of non-smokers was much more difficult in comparison with

　　smokers," he added. .

　　Researchers

　　their data by analyzing 13 years of medical information from a health study. They compared 853 people who

　　smoking 15 or fewer years ago with 2,557 people who never smoked cigarettes. Of the former smokers, 319 had smoked less than 32 pack years.

　　remains the most preventable cause of early death in the United States and elsewhere. So the main message remains: If you smoke, quit and quit

　　. But even those who do not stop smoking until they

　　the Medicare-eligible(有医疗保险资格)age of 65 appear

　　to get heart-related health benefits from stopping smoking.

　　While the heart-related benefits seen in the study seem clear, researchers said, lung damage is not so

　　changeable. Those who smoked less than 32 pack years and quit up to 15 or more

　　years ago were still at a high risk of dying from

　　cancer.

　　1. A. kicking

　　B. dying

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